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Probing the Circumgalactic Medium with Fast Radio Bursts: Insights from CAMELS Astrophys. J. (IF 4.9) Pub Date : 2024-05-14 Isabel Medlock, Daisuke Nagai, Priyanka Singh, Benjamin Oppenheimer, Daniel Anglés-Alcázar and Francisco Villaescusa-Navarro
Most diffuse baryons, including the circumgalactic medium (CGM) surrounding galaxies and the intergalactic medium (IGM) in the cosmic web, remain unmeasured and unconstrained. Fast radio bursts (FRBs) offer an unparalleled method to measure the electron dispersion measures (DMs) of ionized baryons. Their distribution can resolve the missing baryon problem and constrain the history of feedback theorized
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Bayesian Synthesis of Astrometric Wobble and Total Light Curves in Close Binary Supermassive Black Holes Astrophys. J. (IF 4.9) Pub Date : 2024-05-14 Andjelka B. Kovačević, Yu-Yang Songsheng, Jian-Min Wang and Luka Č. Popović
We test the potential of Bayesian synthesis of upcoming multi-instrument data to extract orbital parameters and individual light curves of close binary supermassive black holes (CB-SMBH) with subparsec separations. Next-generation interferometers, will make possible the observation of astrometric wobbles in CB-SMBH. Combining them with periodic variable time-domain data from surveys like the Vera C
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Deep Synoptic Array Science: First FRB and Host Galaxy Catalog Astrophys. J. (IF 4.9) Pub Date : 2024-05-14 Casey J. Law, Kritti Sharma, Vikram Ravi, Ge Chen, Morgan Catha, Liam Connor, Jakob T. Faber, Gregg Hallinan, Charlie Harnach, Greg Hellbourg, Rick Hobbs, David Hodge, Mark Hodges, James W. Lamb, Paul Rasmussen, Myles B. Sherman, Jun Shi, Dana Simard, Reynier Squillace, Sander Weinreb, David P. Woody and Nitika Yadlapalli Yurk
Fast radio bursts (FRBs) are a powerful and mysterious new class of transients that are luminous enough to be detected at cosmological distances. By associating FRBs to host galaxies, we can measure intrinsic and environmental properties that test FRB origin models, in addition to using them as precise probes of distant cosmic gas. The Deep Synoptic Array (DSA-110) is a radio interferometer built to
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Lyα Emission at z = 7–13: Clear Evolution of Lyα Equivalent Width Indicating a Late Cosmic Reionization History Astrophys. J. (IF 4.9) Pub Date : 2024-05-14 Minami Nakane, Masami Ouchi, Kimihiko Nakajima, Yuichi Harikane, Yoshiaki Ono, Hiroya Umeda, Yuki Isobe, Yechi Zhang and Yi Xu
We present the evolution of Lyα emission derived from 53 galaxies at z = 6.6–13.2, which have been identified by multiple JWST/NIRSpec spectroscopy programs of Early Release Science, General Observer, Director's Discretionary Time, and Guaranteed Time Observations. These galaxies fall on the star formation main sequence and are typical star-forming galaxies with UV magnitudes of −22.5 ≤ MUV ≤ −17.0
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Study of the Observation Sensitivity of Gamma-Ray Bursts for the HADAR Project Astrophys. J. (IF 4.9) Pub Date : 2024-05-14 Zi-hao Zhang, Tian-Lu Chen, You-Liang Feng, Yi-Qing Guo, Yu-Hua Yao, Cheng Liu, Yang-Zhao Ren, Heng-Jiao Liu, Hong-Bo Hu, Qi-Ling Chen, Guang-Guang Xin, Yi Zhang and Qiang Yuan
The High Altitude Detection of Astronomical Radiation (HADAR) is a novel wide-field Cherenkov Telescope. It is designed for gamma-ray astronomy in the energy range of 10 GeV to 100 TeV, with gamma-ray bursts (GRBs) being one of its primary research focuses. To assess its complementary capabilities, this study first presents the Crab sensitivity of HADAR. Then, to compare the sensitivity of GRBs, the
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Exploring the Mpc Environment of the Quasar ULAS J1342+0928 at z = 7.54 Astrophys. J. (IF 4.9) Pub Date : 2024-05-14 Sofía Rojas-Ruiz, Chiara Mazzucchelli, Steven L. Finkelstein, Eduardo Bañados, Emanuele Paolo Farina, Bram P. Venemans, Roberto Decarli, Chris J. Willott, Feige Wang, Fabian Walter, Enrico Congiu, Gabriel Brammer and Peter Zeidler
Theoretical models predict that z ≳ 6 quasars are hosted in the most massive halos of the underlying dark matter distribution and thus would be immersed in protoclusters of galaxies. However, observations report inconclusive results. We investigate the 1.1 proper-Mpc2 environment of the z = 7.54 luminous quasar ULAS J1342+0928. We search for Lyman-break galaxy (LBG) candidates using deep imaging from
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Evidence of a Strong 19.5 Hz Flux Oscillation in Swift BAT and Fermi GBM Gamma-Ray Data from GRB 211211A Astrophys. J. (IF 4.9) Pub Date : 2024-05-14 Cecilia Chirenti, Simone Dichiara, Amy Lien and M. Coleman Miller
The gamma-ray burst (GRB) GRB 211211A is believed to have occurred due to the merger of two neutron stars or a neutron star and a black hole, despite its duration of more than a minute. Subsequent analysis has revealed numerous interesting properties including the possible presence of a ∼22 Hz quasiperiodic oscillation (QPO) during precursor emission. Here we perform timing analysis of Fermi and Swift
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Sizes of Active Galactic Nucleus Inhomogeneous Disks—Large in Microlensing, Small in Reverberation Mapping Astrophys. J. (IF 4.9) Pub Date : 2024-05-14 Guowei Ren, Mouyuan Sun, Jun-Xian Wang and Zhen-Yi Cai
Magnetohydrodynamic turbulence can drive significant temperature fluctuations in the accretion disk of an active galactic nucleus (AGN). As a result, the disk can be highly inhomogeneous and has a half-light radius larger than the static Shakura and Sunyaev disk (SSD), in agreement with quasar microlensing observations. Meanwhile, the accretion-disk sizes can also be determined using continuum reverberation
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The Evolution of Accreting Binaries: From Brown Dwarfs to Supermassive Black Holes Astrophys. J. (IF 4.9) Pub Date : 2024-05-12 Alexander J. Dittmann and Geoffrey Ryan
Circumbinary accretion occurs throughout the universe, from the formation of stars and planets to the aftermath of major galactic mergers. We present an extensive investigation of circumbinary accretion disks, studying circular binaries with mass ratios (q ≡ M2/M1) from 0.01 to 1 and at each mass ratio probing the effects of disk thickness and viscosity. We study disks with aspect ratios H/r ∈ {0.1
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Spectral distortion signatures of step-like inflationary potential J. Cosmol. Astropart. Phys. (IF 6.4) Pub Date : 2024-05-13 Jorge Mastache, Wilson Barrera and Raúl Henríquez-Ortiz
In this work, we analyze a power-law inflationary potential enhanced with a step that can introduce features in the primordial power spectrum. We focus on the computation of the Spectral Distortions (SD) induced by these features obtained from the inflationary dynamics. In this scenario, we explore the potential of upcoming experimental missions like PIXIE to detect the SD of the model within a power
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Quantum gravity effects on fermionic dark matter and gravitational waves J. Cosmol. Astropart. Phys. (IF 6.4) Pub Date : 2024-05-13 Stephen F. King, Rishav Roshan, Xin Wang, Graham White and Masahito Yamazaki
We explore the phenomenological consequences of breaking discrete global symmetries in quantum gravity (QG). We extend a previous scenario where discrete global symmetries are responsible for scalar dark matter (DM) and domain walls (DWs), to the case of fermionic DM, considered as a feebly interacting massive particle, which achieves the correct DM relic density via the freeze-in mechanism. Due to
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Rescuing gravitational-reheating in chaotic inflation J. Cosmol. Astropart. Phys. (IF 6.4) Pub Date : 2024-05-13 Basabendu Barman, Nicolás Bernal and Javier Rubio
We show, within the single-field inflationary paradigm, that a linear non-minimal interaction ξ M P ϕ R between the inflaton field ϕ and the Ricci scalar R can result in successful inflation that concludes with an efficient heating of the Universe via perturbative decays of the inflaton, aided entirely by gravity. Considering the inflaton field to oscillate in a quadratic potential, we find that 𝒪(10-1)
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Gravitational radiation from eccentric binary black hole system in dynamical Chern-Simons gravity J. Cosmol. Astropart. Phys. (IF 6.4) Pub Date : 2024-05-13 Zhao Li, Jin Qiao, Tan Liu, Rui Niu, Shaoqi Hou, Tao Zhu and Wen Zhao
Dynamical Chern-Simons (DCS) gravity, a typical parity-violating gravitational theory, modifies both the generation and propagation of gravitational waves from general relativity (GR). In this work, we derive the gravitational waveform radiated from a binary slowly-rotating black hole system with eccentric orbits under the spin-aligned assumption in the DCS theory. Compared with GR, DCS modification
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Hamiltonian for Weyl transverse gravity J. Cosmol. Astropart. Phys. (IF 6.4) Pub Date : 2024-05-13 J. Klusoň
In this short note we determine Hamiltonian for Weyl transverse gravity. We find primary, secondary and tertiary constraints and calculate Poisson brackets between them. We also show that gauge fixing in Weyl transverse gravity leads to the Hamiltonian for unimodular gravity.
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How robust are gravitational wave predictions from cosmological phase transitions? J. Cosmol. Astropart. Phys. (IF 6.4) Pub Date : 2024-05-13 Peter Athron, Lachlan Morris and Zhongxiu Xu
Gravitational wave (GW) predictions of cosmological phase transitions are almost invariably evaluated at either the nucleation or percolation temperature. We investigate the effect of the transition temperature choice on GW predictions, for phase transitions with weak, intermediate and strong supercooling. We find that the peak amplitude of the GW signal varies by a factor of a few for weakly supercooled
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A Minkowski functional analysis of the Cosmic Microwave Background weak lensing convergence J. Cosmol. Astropart. Phys. (IF 6.4) Pub Date : 2024-05-13 Jan Hamann and Yuqi Kang
Minkowski functionals are summary statistics that capture the geometric and morphological properties of fields. They are sensitive to all higher order correlations of the fields and can be used to complement more conventional statistics, such as the power spectrum of the field. We develop a Minkowski functional-based approach for a full likelihood analysis of mildly non-Gaussian sky maps with partial
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Mock data sets for the Eboss and DESI Lyman-α forest surveys J. Cosmol. Astropart. Phys. (IF 6.4) Pub Date : 2024-05-13 Thomas Etourneau, Jean-Marc Le Goff, James Rich, Ting Tan, Andrei Cuceu, S. Ahlen, E. Armengaud, D. Brooks, T. Claybaugh, A. de la Macorra, P. Doel, A. Font-Ribera, J.E. Forero-Romero, S.Gontcho A. Gontcho, A.X. Gonzalez-Morales, H.K. Herrera-Alcantar, K. Honscheid, T. Kisner, M. Landriau, M. Manera, P. Martini, R. Miquel, A. Muñoz-Gutiérrez, J. Nie, I. Pérez-Ràfols, C. Poppett, C. Ravoux, M. Rezaie
We present a publicly-available code to generate sets of mock Lyman-α (Lyα) forest data that have realistic large-scale correlations including those due to the Baryonic Acoustic Oscillations (BAO). The primary purpose of these mocks is to test the analysis procedures of the Extended Baryon Oscillation Survey (eBOSS) and the Dark Energy Spectroscopy Instrument (DESI) surveys. The transmitted flux fraction
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Scaling solutions as Early Dark Energy resolutions to the Hubble tension J. Cosmol. Astropart. Phys. (IF 6.4) Pub Date : 2024-05-13 Edmund J. Copeland, Adam Moss, Sergio Sevillano Muñoz and Jade M.M. White
A wide class of scalar field models including Quintessence and K-essence have the attractive property of tracker regimes, where the energy density stored in the field evolves so as to mimic that of the dominant background component. During this evolution, for a brief period of time, there is an increase in the energy density of the field as it spirals in towards its attractor solution. We show that
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Wide binaries and modified gravity (MOG) J. Cosmol. Astropart. Phys. (IF 6.4) Pub Date : 2024-05-13 J.W. Moffat
Wide binary stars are used to test the modified gravity called Scalar-Tensor-Vector Gravity or MOG. This theory is based on the additional gravitational degrees of freedom, the scalar field G = GN(1+α), where GN is Newton's constant, and the massive (spin-1 graviton) vector field ϕμ. The wide binaries have separations of 2–30 kAU. The MOG acceleration law, derived from the MOG field equations and equations
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A self-similar model of galaxy formation and dark halo relaxation J. Cosmol. Astropart. Phys. (IF 6.4) Pub Date : 2024-05-13 Premvijay Velmani and Aseem Paranjape
We develop a spherical self-similar model for the formation of a galaxy through gas collapsing in an isolated self-gravitating dark matter halo. As is well known, the self-similarity assumption makes the problem eminently tractable by reducing it to a system of ordinary differential equations. We improve upon the existing literature on self-similar collapse in two ways. First, we include the effects
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LiteBIRD and CMB-S4 sensitivities to reheating in plateau models of inflation J. Cosmol. Astropart. Phys. (IF 6.4) Pub Date : 2024-05-13 Marco Drewes, Lei Ming and Isabel Oldengott
We study the sensitivity of LiteBIRD and CMB-S4 to the reheating temperature and the inflaton coupling in three types of plateau-potential models of inflation, namely mutated hilltop inflation, radion gauge inflation, and α-attractor T models. We first find relations between model parameters and CMB observables in all models. We then perform Monte Carlo Markov Chain based forecasts to quantify the
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Constraints on non-Gaussian primordial curvature perturbation from the LIGO-Virgo-KAGRA third observing run J. Cosmol. Astropart. Phys. (IF 6.4) Pub Date : 2024-05-13 Ryoto Inui, Santiago Jaraba, Sachiko Kuroyanagi and Shuichiro Yokoyama
The scalar-induced gravitational wave (SIGWs), arising from large amplitude primordial density fluctuations, provide a unique observational test for directly probing the epoch of inflation. In this work, we provide constraints on the SIGW background by taking into account the non-Gaussianity in the primordial density fluctuations, using the first three observing runs (O1-O3) data of the LIGO-Virgo-KAGRA
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Suppression of matter density growth at scales exceeding the cosmic screening length J. Cosmol. Astropart. Phys. (IF 6.4) Pub Date : 2024-05-13 M. Eingorn, E. Yilmaz, A.E. Yükselci and A. Zhuk
One of the main objectives of modern cosmology is to explain the origin and evolution of cosmic structures at different scales. The principal force responsible for the formation of such structures is gravity. In a general relativistic framework, we have shown that matter density contrasts do not grow over time at scales exceeding the cosmic screening length, which corresponds to a cosmological scale
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The Cause of the Difference in the Propagation Distances between Compact and Transient Jets in Black Hole X-Ray Binaries Astrophys. J. Lett. (IF 7.9) Pub Date : 2024-05-14 Andrzej A. Zdziarski and Sebastian Heinz
Accreting black hole binaries change their properties during evolution, passing through two main luminous states, dominated by either hard or soft X-rays. In the hard state, steady compact jets emitting multiwavelength radiation are present. Those jets are usually observed in radio, and when resolved, their extent is ≲1015 cm. Then, during hard-to-soft transitions, powerful ejecta in the form of blobs
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The SRG/eROSITA All-Sky Survey Astron. Astrophys. (IF 6.5) Pub Date : 2024-05-15 E. Bulbul, A. Liu, M. Kluge, X. Zhang, J. S. Sanders, Y. E. Bahar, V. Ghirardini, E. Artis, R. Seppi, C. Garrel, M. E. Ramos-Ceja, J. Comparat, F. Balzer, K. Böckmann, M. Brüggen, N. Clerc, K. Dennerl, K. Dolag, M. Freyberg, S. Grandis, D. Gruen, F. Kleinebreil, S. Krippendorf, G. Lamer, A. Merloni, K. Migkas, K. Nandra, F. Pacaud, P. Predehl, T. H. Reiprich, T. Schrabback, A. Veronica, J. Weller,
Clusters of galaxies can be used as powerful probes to study astrophysical processes on large scales, test theories of the growth of structure, and constrain cosmological models. The driving science goal of the SRG/eROSITA All-Sky Survey is to assemble a large sample of X-ray clusters with a well-defined selection function to determine the evolution of the mass function and, hence, the cosmological
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Determining the Nanoflare Heating Frequency of an X-Ray Bright Point Observed by MaGIXS Astrophys. J. (IF 4.9) Pub Date : 2024-05-13 Biswajit Mondal, P. S. Athiray, Amy R. Winebarger, Sabrina L. Savage, Ken Kobayashi, Stephen Bradshaw, Will Barnes, Patrick R. Champey, Peter Cheimets, Jaroslav Dudík, Leon Golub, Helen E. Mason, David E. McKenzie, Christopher S. Moore, Chad Madsen, Katharine K. Reeves, Paola Testa, Genevieve D. Vigil, Harry P. Warren, Robert W. Walsh and Giulio Del Zanna
Nanoflares are thought to be one of the prime candidates that can heat the solar corona to its multimillion kelvin temperature. Individual nanoflares are difficult to detect with the present generation of instruments, but their presence can be inferred by comparing simulated nanoflare-heated plasma emissions with the observed emission. Using HYDRAD coronal loop simulations, we model the emission from
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Resolved Near-infrared Stellar Photometry from the Magellan Telescope for 13 Nearby Galaxies: J-region Asymptotic Giant Branch Method Distances Astrophys. J. (IF 4.9) Pub Date : 2024-05-13 Abigail J. Lee, Andrew J. Monson, Wendy L. Freedman, Barry F. Madore, Kayla A. Owens, Rachael L. Beaton, Coral Espinoza, Tongtian Ren and Yi Ren
We present near-infrared JHK photometry for the resolved stellar populations in 13 nearby galaxies: NGC 6822, IC 1613, NGC 3109, Sextans B, Sextans A, NGC 300, NGC 55, NGC 7793, NGC 247, NGC 5253, Cen A, NGC 1313, and M83, acquired from the 6.5 m Baade–Magellan telescope. We measure distances to each galaxy using the J-region asymptotic giant branch (JAGB) method, a new standard candle that leverages
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Dissipative Dark Substructure: The Consequences of Atomic Dark Matter on Milky Way Analog Subhalos Astrophys. J. (IF 4.9) Pub Date : 2024-05-13 Caleb Gemmell, Sandip Roy, Xuejian Shen, David Curtin, Mariangela Lisanti, Norman Murray and Philip F. Hopkins
Using cosmological hydrodynamical zoom-in simulations, we explore the properties of subhalos in Milky Way analogs that contain a subcomponent of atomic dark matter (ADM). ADM differs from cold dark matter (CDM) due to the presence of self-interactions that lead to energy dissipation, analogous to standard model baryons. This model can arise in dark sectors that are natural and theoretically motivated
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Optical Spectroscopy of Type Ia Supernovae by the Carnegie Supernova Projects I and II Astrophys. J. (IF 4.9) Pub Date : 2024-05-13 N. Morrell, M. M. Phillips, G. Folatelli, M. D. Stritzinger, M. Hamuy, N. B. Suntzeff, E. Y. Hsiao, F. Taddia, C. R. Burns, P. Hoeflich, C. Ashall, C. Contreras, L. Galbany, J. Lu, A. L. Piro, J. Anais, E. Baron, A. Burrow, L. Busta, A. Campillay, S. Castellón, C. Corco, T. Diamond, W. L. Freedman, C. Gonzalez, K. Krisciunas, S. Kumar, S. E. Persson, J. Serón, M. Shahbandeh, S. Torres, S. A. Uddin
We present the second and final release of optical spectroscopy of Type Ia supernovae (SNe Ia) obtained during the first and second phases of the Carnegie Supernova Project (CSP-I and CSP-II). The newly released data consist of 148 spectra of 30 SNe Ia observed in the course of CSP-I and 234 spectra of 127 SNe Ia obtained during CSP-II. We also present 216 optical spectra of 46 historical SNe Ia, including
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Parametric Decay of a Kinked Alfvén Wave Packet: 3D Magnetohydrodynamic Simulations Astrophys. J. (IF 4.9) Pub Date : 2024-05-13 Maile Marriott and Anna Tenerani
Large amplitude Alfvénic fluctuations, sometimes leading to localized inversions of the magnetic field, called switchbacks, are a common but poorly understood phenomenon in the solar wind. In particular, their origin(s), evolution, and stability within solar wind conditions are yet to be fully understood. Simulations modeling switchbacks have previously studied their stability in 2D. Here, we investigate
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Magnetic Field of Molecular Gas Measured with the Velocity Gradient Technique. II. Curved Magnetic Field in kpc-scale Bubble of NGC 628 Astrophys. J. (IF 4.9) Pub Date : 2024-05-13 Mengke Zhao, Jianjun Zhou, Willem A. Baan, Yue Hu, A. Lazarian, Xindi Tang, Jarken Esimbek, Yuxin He, Dalei Li, Weiguang Ji, Zhengxue Chang and Kadirya Tursun
We report the detection of the ordered alignment between the magnetic field and kpc-scale bubbles in the nearby spiral galaxy, NGC 628. Applying the Velocity Gradient Technique on CO spectroscopic data from the ALMA-PHANGS, the magnetic field of NGC 628 is measured at the scale of 191 pc (∼4″). The large-scale magnetic field is oriented parallel to the spiral arms and curves around the galactic bubble
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Evolutionary Origin of Ultralong-period Radio Transients Astrophys. J. (IF 4.9) Pub Date : 2024-05-13 Yun-Ning Fan, Kun Xu and Wen-Cong Chen
Recently, two ultralong-period radio transients, GLEAM-X J162759.5-523504.3 (J1627) and GPM J1839-10 (J1839), were discovered with spin periods longer than 1000 s. The origin of these two ultralong-period radio transients is intriguing in understanding the spin evolution of neutron stars (NSs). In this work, we examine whether the interaction between strong magnetized NSs and fallback disks can spin
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Photometric Objects Around Cosmic Webs (PAC). VI. High Satellite Fraction of Quasars Astrophys. J. (IF 4.9) Pub Date : 2024-05-13 Shanquan Gui, Kun Xu, Y. P. Jing, Donghai Zhao and Hongyu Gao
The Photometric objects Around Cosmic webs (PAC) approach developed in Xu et al. has the advantage of making full use of spectroscopic and deeper photometric surveys. With the merits of PAC, the excess surface density of neighboring galaxies can be measured down to stellar mass 1010.80M⊙ around quasars at redshift 0.8 < zs < 1.0, with the data from the Sloan Digital Sky Survey IV extended Baryon Oscillation
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Properties of the Magellanic Corona Astrophys. J. (IF 4.9) Pub Date : 2024-05-13 Scott Lucchini, Elena D’Onghia and Andrew J. Fox
We characterize the Magellanic Corona, the warm gaseous halo around the Large Magellanic Cloud (LMC). The Corona is a key ingredient in the formation of the Magellanic Stream and has recently been observed in high-ion absorption around the LMC. In this work, we present a suite of high-resolution hydrodynamical simulations to constrain its total mass and temperature prior to the infall of the Magellanic
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Euclid preparation Astron. Astrophys. (IF 6.5) Pub Date : 2024-05-14 T. Castro, S. Borgani, M. Costanzi, J. Dakin, K. Dolag, A. Fumagalli, A. Ragagnin, A. Saro, A. M. C. Le Brun, N. Aghanim, A. Amara, S. Andreon, N. Auricchio, M. Baldi, S. Bardelli, C. Bodendorf, D. Bonino, E. Branchini, M. Brescia, J. Brinchmann, S. Camera, V. Capobianco, C. Carbone, J. Carretero, S. Casas, M. Castellano, S. Cavuoti, A. Cimatti, G. Congedo, C. J. Conselice, L. Conversi, Y. Copin, L
The Euclid photometric survey of galaxy clusters stands as a powerful cosmological tool, with the capacity to significantly propel our understanding of the Universe. Despite being subdominant to dark matter and dark energy, the baryonic component of our Universe holds substantial influence over the structure and mass of galaxy clusters. This paper presents a novel model that can be used to precisely
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The population of young low-mass stars in Trumpler 14⋆⋆⋆ Astron. Astrophys. (IF 6.5) Pub Date : 2024-05-14 Dominika Itrich, Leonardo Testi, Giacomo Beccari, Carlo F. Manara, Megan Reiter, Thomas Preibisch, Anna F. McLeod, Giovanni Rosotti, Ralf Klessen, Sergio Molinari, Patrick Hennebelle
Massive star-forming regions are thought to be the most common birth environments in the Galaxy and the only birth places of very massive stars. Their presence in the stellar cluster alters the conditions within the cluster, impacting at the same time the evolution of other cluster members. In principle, copious amounts of ultraviolet radiation produced by massive stars can remove material from outer
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Observations of scattered light from exoplanet atmospheres Astron. Astrophys. (IF 6.5) Pub Date : 2024-05-14 Brett M. Morris, Kevin Heng, Daniel Kitzmann
Optical phase curves of hot Jupiters can reveal global scattering properties. We implemented a Bayesian inference framework for optical phase curves with flux contributions from: reflected light from a potentially inhomogeneous atmosphere, thermal emission, ellipsoidal variations, Doppler beaming, and stellar rotation via a Gaussian process in the time domain. We probed for atmospheric homogeneity
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Structure formation with primordial black holes to alleviate early star formation tension revealed by JWST Astron. Astrophys. (IF 6.5) Pub Date : 2024-05-14 P. E. Colazo, F. Stasyszyn, N. Padilla
Context. This Letter explores the potential role of primordial black holes (PBHs) to address cosmological tensions as the presence of more massive than expected galaxies at high redshifts, as indicated by recent James Webb Space Telescope observations.Aims. Motivated by inflation models that enhance the power at scales beyond the observable range that produce PBHs with Schechter-like mass functions
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Astrometric detection of a Neptune-mass candidate planet in the nearest M-dwarf binary system GJ65 with VLTI/GRAVITY Astron. Astrophys. (IF 6.5) Pub Date : 2024-05-14 R. Abuter, A. Amorim, M. Benisty, J. P. Berger, H. Bonnet, G. Bourdarot, P. Bourget, W. Brandner, Y. Clénet, R. Davies, F. Delplancke-Ströbele, R. Dembet, A. Drescher, A. Eckart, F. Eisenhauer, H. Feuchtgruber, G. Finger, N. M. Förster Schreiber, P. Garcia, R. Garcia-Lopez, F. Gao, E. Gendron, R. Genzel, S. Gillessen, M. Hartl, X. Haubois, F. Haussmann, T. Henning, S. Hippler, M. Horrobin, L. Jochum
The detection of low-mass planets orbiting the nearest stars is a central stake of exoplanetary science, as they can be directly characterized much more easily than their distant counterparts. Here, we present the results of our long-term astrometric observations of the nearest binary M-dwarf Gliese 65 AB (GJ65), located at a distance of only 2.67 pc. We monitored the relative astrometry of the two
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TEMPLATES: Characterization of a Merger in the Dusty Lensing SPT0418–47 System Astrophys. J. (IF 4.9) Pub Date : 2024-05-12 Jared Cathey, Anthony H. Gonzalez, Sidney Lower, Kedar A. Phadke, Justin Spilker, Manuel Aravena, Matthew Bayliss, Jack E. Birkin, Simon Birrer, Scott Chapman, Håkon Dahle, Christopher C. Hayward, Yashar Hezaveh, Ryley Hill, Taylor A. Hutchison, Keunho J. Kim, Guillaume Mahler, Daniel P. Marrone, Desika Narayanan, Alexander Navarre, Cassie Reuter, Jane R. Rigby, Keren Sharon, Manuel Solimano, Nikolaus
We present JWST and Atacama Large Millimeter/submillimeter Array (ALMA) imaging for the lensing system SPT0418−47, which includes a strongly lensed, dusty, star-forming galaxy at redshift z = 4.225 and an associated multiply imaged companion. The JWST NIRCam and MIRI imaging observations presented in this paper were acquired as part of the Early Release Science program Targeting Extremely Magnified
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Testing the LSST Difference Image Analysis Pipeline Using Synthetic Source Injection Analysis Astrophys. J. (IF 4.9) Pub Date : 2024-05-12 S. Liu, W. M. Wood-Vasey, R. Armstrong, G. Narayan, B. O. Sánchez and The Dark Energy Science Collaboration
We evaluate the performance of the Legacy Survey of Space and Time Science Pipelines Difference Image Analysis (DIA) on simulated images. By adding synthetic sources to galaxies on images, we trace the recovery of injected synthetic sources to evaluate the pipeline on images from the Dark Energy Science Collaboration Data Challenge 2. The pipeline performs well, with efficiency and flux accuracy consistent
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Generation and Life Cycle of Solar Spicules Astrophys. J. (IF 4.9) Pub Date : 2024-05-12 Hamid Saleem and Zain H. Saleem
The physical mechanism for the creation of solar spicules is proposed with three stages of their life cycle. It is assumed that at stage I the density hump is formed locally in the x-y plane in the lower chromosphere in the presence of temperature gradients of electrons and ions along the z-axis (the vertical direction). In this region, the density structure of quasi-neutral (ni ≃ ne = n) plasma after
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The First High-contrast Images of Near High-mass X-Ray Binaries with Keck/NIRC2 Astrophys. J. (IF 4.9) Pub Date : 2024-05-12 M. Prasow-Émond, J. Hlavacek-Larrondo, K. Fogarty, É. Artigau, D. Mawet, P. Gandhi, J. F. Steiner, J. Rameau, D. Lafrenière, A. Fabian, D. J. Walton, R. Doyon, B. B. Ren and 彬 任
Although the study of X-ray binaries has led to major breakthroughs in high-energy astrophysics, their circumbinary environment at scales of ∼100–10,000 au has not been thoroughly investigated. In this paper, we undertake a novel and exploratory study by employing direct and high-contrast imaging techniques on a sample of X-ray binaries, using adaptive optics and the vortex coronagraph on Keck/NIRC2
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Can Jupiter’s Atmospheric Metallicity Be Different from the Deep Interior? Astrophys. J. (IF 4.9) Pub Date : 2024-05-12 Simon Müller and Ravit Helled
Updated formation and structure models of Jupiter predict a metal-poor envelope. This is at odds with the two to three times solar metallicity measured by the Galileo probe. Additionally, Juno data imply that water and ammonia are enriched. Here, we explore whether Jupiter could have a deep radiative layer separating the atmosphere from the deeper interior. The radiative layer could be caused by a
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KFVM-WENO: A High-order Accurate Kernel-based Finite Volume Method for Compressible Hydrodynamics Astrophys. J. (IF 4.9) Pub Date : 2024-05-12 Ian C. T. May and Dongwook Lee
This paper presents a fully multidimensional kernel-based reconstruction scheme for finite volume methods applied to systems of hyperbolic conservation laws, with a particular emphasis on the compressible Euler equations. Nonoscillatory reconstruction is achieved through an adaptive-order weighted essentially nonoscillatory (WENO) method cast into a form suited to multidimensional reconstruction. A
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Insights into the Galactic Bulge Chemodynamical Properties from Gaia Data Release 3 Astrophys. J. (IF 4.9) Pub Date : 2024-05-12 Xiaojie Liao, Zhao-Yu Li, Iulia Simion, Juntai Shen, Robert Grand, Francesca Fragkoudi and Federico Marinacci
We explore the chemodynamical properties of the Galaxy in the azimuthal velocity Vϕ and metallicity [Fe/H] space using red giant stars from Gaia Data Release 3. The row-normalized Vϕ–[Fe/H] maps form a coherent sequence from the bulge to the outer disk, clearly revealing the thin/thick disk and the Splash. The metal-rich stars display bar-like kinematics, while the metal-poor stars show dispersion-dominated
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Dynamical Properties of Magnetized Low-angular-momentum Accretion Flows around a Kerr Black Hole Astrophys. J. (IF 4.9) Pub Date : 2024-05-12 Indu K. Dihingia and Yosuke Mizuno
An essential factor for determining the characteristics of an accretion flow is its angular momentum. According to the angular momentum of the flow, semi-analytical analysis suggests various types of accretion solutions. It is critical to test these with numerical simulations, using the most advanced framework available (general relativistic magnetohydrodynamics), to understand how the flow changes
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Relativistic Jet Ejections from Slim Disks Astrophys. J. (IF 4.9) Pub Date : 2024-05-12 Hajime Inoue
A mechanism for the ejection of relativistic jets from slim disks is studied. Since radiation pressure is dominant in the slim disk, radiative energy flows along the pressure gradient in the vertical direction. The divergence of the radiative flux tells us that the flow of radiative energy from a bottom layer near the equatorial plane is absorbed by another layer above the boundary surface. The absorbed
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Oscillating Dark Energy in Light of the Latest Observations and Its Impact on the Hubble Tension Astrophys. J. (IF 4.9) Pub Date : 2024-05-12 Mehdi Rezaei
In this paper, we have performed a comparative study of different types of oscillating dark energy (DE) models using the Metropolis algorithm of Markov Chain Monte Carlo. Eight different oscillating parameterizations are examined herein that have demonstrated considerable ability to fit the overall cosmological observations, including the Pantheon sample of Type Ia supernovae, baryon acoustic oscillations
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Forming Mercury from Excited Initial Conditions Astrophys. J. (IF 4.9) Pub Date : 2024-05-12 Jennifer Scora, Diana Valencia, Alessandro Morbidelli and Seth Jacobson
Mercury is notoriously difficult to form in Solar System simulations, due to its small mass and iron-rich composition. Smooth particle hydrodynamics simulations of collisions have found that a Mercury-like body could be formed by one or multiple giant impacts, but due to the chaotic nature of collisions, it is difficult to create a scenario where such impacts will take place. Recent work has found
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On the Formation of the W-shaped O ii Lines in Spectra of Type I Superluminous Supernovae Astrophys. J. (IF 4.9) Pub Date : 2024-05-12 Sei Saito, Masaomi Tanaka, Paolo A. Mazzali, Stephan Hachinger and Kenta Hotokezaka
H-poor Type I superluminous supernovae (SLSNe I) are characterized by O ii lines around 4000–4500 Å in pre-/near-maximum spectra, the so-called W-shaped O ii lines. As these lines are from relatively high excitation levels, they have been considered a sign of nonthermal processes, which may provide a hint of the power sources of SLSNe I. However, the conditions for these lines to appear have not been
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Infall Motions in the Hot Core Associated with the Hypercompact H ii Region G345.0061+01.794 B Astrophys. J. (IF 4.9) Pub Date : 2024-05-12 Toktarkhan Komesh, Guido Garay, Christian Henkel, Aruzhan Omar, Robert Estalella, Zhandos Assembay, Dalei Li, Andrés Guzmán, Jarken Esimbek, Jiasheng Huang, Yuxin He, Nazgul Alimgazinova, Meiramgul Kyzgarina, Shukirgaliyev Bekdaulet, Nurman Zhumabay and Arailym Manapbayeva
We report high angular resolution observations, made with the Atacama Large Millimeter Array in band 6, of high excitation molecular lines of and SO2 and of the H29α radio recombination line toward the G345.0061+01.794 B HC H ii region in order to investigate the physical and kinematical characteristics of its surroundings. Emission was detected in all observed components of the J = 14 →13 rotational
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Optical Photometric Indicators of Galaxy Cluster Relaxation Astrophys. J. (IF 4.9) Pub Date : 2024-05-12 Madeline C. Casas, Ky Putnam, Adam B. Mantz, Steven W. Allen and Taweewat Somboonpanyakul
The most dynamically relaxed clusters of galaxies play a special role in cosmological studies as well as astrophysical studies of the intracluster medium (ICM) and active galactic nucleus feedback. While high-spatial-resolution imaging of the morphology of the ICM has long been the gold standard for establishing a cluster’s dynamical state, such data are not available from current or planned surveys
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The BOSS bispectrum analysis at one loop from the Effective Field Theory of Large-Scale Structure J. Cosmol. Astropart. Phys. (IF 6.4) Pub Date : 2024-05-12 Guido D'Amico, Yaniv Donath, Matthew Lewandowski, Leonardo Senatore and Pierre Zhang
We analyze the BOSS power spectrum monopole and quadrupole, and the bispectrum monopole and quadrupole data, using the predictions from the Effective Field Theory of Large-Scale Structure (EFTofLSS). Specifically, we use the one loop prediction for the power spectrum and the bispectrum monopole, and the tree level for the bispectrum quadrupole. After validating our pipeline against numerical simulations
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Weak-scale Higgs inflation J. Cosmol. Astropart. Phys. (IF 6.4) Pub Date : 2024-05-12 Wen Yin
The present measurement of the Standard Model (SM) parameters suggests that the Higgs effective potential has a maximum at the Higgs field value of approximately 1011GeV, and the electroweak (EW) vacuum is not absolutely stable. To achieve absolute EW stability, a very large Higgs-Ricci scalar non-minimal coupling can be introduced. I study cosmic inflation driven by the Higgs field in this extension
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Forecast constraints on the baryonic feedback effect from the future kinetic Sunyaev-Zel'dovich effect detection J. Cosmol. Astropart. Phys. (IF 6.4) Pub Date : 2024-05-12 Yi Zheng and Pengjie Zhang
The baryonic feedback effect is an important systematic error in the weak lensing (WL) analysis. It contributes partly to the S8 tension in the literature. With the next generations of large scale structure (LSS) and CMB experiments, the high signal-to-noise kinetic Sunyaev-Zel'dovich (kSZ) effect detection can tightly constrain the baryon distribution in and around dark matter halos, and quantify
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Fluctuation-dissipation relation in cosmic microwave background J. Cosmol. Astropart. Phys. (IF 6.4) Pub Date : 2024-05-12 Atsuhisa Ota
We study the fluctuation-dissipation relation for sound waves in the cosmic microwave background (CMB), employing effective field theory (EFT) for fluctuating hydrodynamics. Treating sound waves as the linear response to thermal radiation, we establish the fluctuation-dissipation relation within a cosmological framework. While dissipation is elucidated in established linear cosmological perturbation
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EFTofLSS meets simulation-based inference: σ 8 from biased tracers J. Cosmol. Astropart. Phys. (IF 6.4) Pub Date : 2024-05-12 Beatriz Tucci and Fabian Schmidt
Cosmological inferences typically rely on explicit expressions for the likelihood and covariance of the data vector, which normally consists of a set of summary statistics. However, in the case of nonlinear large-scale structure, exact expressions for either likelihood or covariance are unknown, and even approximate expressions can become very cumbersome, depending on the scales and summary statistics
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Are f(R, Matter) theories really relevant to cosmology? J. Cosmol. Astropart. Phys. (IF 6.4) Pub Date : 2024-05-12 Osmin Lacombe, Shinji Mukohyama and Josef Seitz
We examine f(R, Matter) theories that directly couple the curvature R or Rμν with the matter sector in the action, in addition to the universal coupling. We argue that if the matter sector includes the Standard Model (SM), such theories are either inconsistent or already excluded by experiments unless they are a rewriting of f(R) gravity or general relativity. If these theories genuinely couple the
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Hunting WIMPs with LISA: correlating dark matter and gravitational wave signals J. Cosmol. Astropart. Phys. (IF 6.4) Pub Date : 2024-05-12 Torsten Bringmann, Tomás E. Gonzalo, Felix Kahlhoefer, Jonas Matuszak and Carlo Tasillo
The thermal freeze-out mechanism in its classical form is tightly connected to physics beyond the Standard Model around the electroweak scale, which has been the target of enormous experimental efforts. In this work we study a dark matter model in which freeze-out is triggered by a strong first-order phase transition in a dark sector, and show that this phase transition must also happen close to the