output
19922026
Showing 2021 · astro-ph.HEShow all

23 papers · 2 filters

astro-ph.HE2021★ 41 cited

Search for Gravitational Waves Associated with Gamma-Ray Bursts Detected by Fermi and Swift During the LIGO-Virgo Run O3b

The LIGO Scientific Collaboration, the Virgo Collaboration, the KAGRA Collaboration +1632

We search for gravitational-wave signals associated with gamma-ray bursts detected by the Fermi and Swift satellites during the second half of the third observing run of Advanced L…

astro-ph.HE2021★ 27 cited

VLA Radio Study of a Sample of Nearby X-ray and Optically Bright Early-Type Galaxies

Romana Grossová, Norbert Werner, Francesco Massaro +9

Many massive early-type galaxies host central radio sources and hot X-ray atmospheres indicating the presence of radio-mechanical active galactic nucleus (AGN) feedback. The duty c…

astro-ph.HE2021★ 96 cited

All-sky search for gravitational wave emission from scalar boson clouds around spinning black holes in LIGO O3 data

The LIGO Scientific Collaboration, the Virgo Collaboration, the KAGRA Collaboration +1669

This paper describes the first all-sky search for long-duration, quasi-monochromatic gravitational-wave signals emitted by ultralight scalar boson clouds around spinning black hole…

astro-ph.HE2021★ 74 cited

Searches for Gravitational Waves from Known Pulsars at Two Harmonics in the Second and Third LIGO-Virgo Observing Runs

The LIGO Scientific Collaboration, the Virgo Collaboration, the KAGRA Collaboration +1694

We present a targeted search for continuous gravitational waves (GWs) from 236 pulsars using data from the third observing run of LIGO and Virgo (O3) combined with data from the se…

astro-ph.HE2021★ 8 cited

Close, bright and boxy: the superluminous SN 2018hti

A. Fiore, S. Benetti, M. Nicholl +37

SN 2018hti was a very nearby (z=0.0614) superluminous supernova with an exceedingly bright absolute magnitude of -21.7 mag in r-band at maximum. The densely sampled pre-maximum lig…

astro-ph.HE2021★ 9 cited

Rescued from oblivion: detailed analysis of archival {\it Spitzer} data of SN~1993J

Sz. Zsíros, A. P. Nagy, T. Szalai

We present an extensive analysis of the late-time mid-infrared (mid-IR) evolution of Type IIb SN 1993J from 10 up to 26 years post-explosion based on archival mostly previously…

astro-ph.HE2021★ 54 cited

Circumstellar Interaction Powers the Light Curves of Luminous Rapidly Evolving Optical Transients

C. Pellegrino, D. A. Howell, J. Vinkó +16

Rapidly evolving transients, or objects that rise and fade in brightness on timescales two to three times shorter than those of typical Type Ia or Type II supernovae (SNe), have un…

astro-ph.HE2021★ 26 cited

Astrophysical Gravitational-Wave Echoes from Galactic Nuclei

László Gondán, Bence Kocsis

Galactic nuclei (GNs) are dense stellar environments abundant in gravitational-wave (GW) sources for LIGO, VIRGO, and KAGRA. The GWs may be generated by stellar-mass black hole (BH…

astro-ph.HE2021★ 61 cited

Search for continuous gravitational waves from 20 accreting millisecond X-ray pulsars in O3 LIGO data

The LIGO Scientific Collaboration, the Virgo Collaboration, the KAGRA Collaboration +1634

Results are presented of searches for continuous gravitational waves from 20 accreting millisecond X-ray pulsars with accurately measured spin frequencies and orbital parameters, u…

astro-ph.HE2021★ 2 cited

A long-lived compact jet in the black hole X-ray binary candidate AT2019wey

Hong-Min Cao, Giulia Migliori, Marcello Giroletti +7

AT2019wey is a transient discovered by the Asteroid Terrestrial-impact Last Alert System (ATLAS) survey in December of 2019. Follow-up optical, radio, and X-ray observations led to…

astro-ph.HE2021★ 28 cited

Dual-frequency single-pulse study of PSR B0950+08

A. V. Bilous, J. M. Griessmeier, T. Pennucci +33

PSR B0950+08 is a bright non-recycled pulsar whose single-pulse fluence variability is reportedly large. Based on observations at two widely separated frequencies, 55 MHz (NenuFAR)…

astro-ph.HE2021★ 20 cited

SN2017jgh - A high-cadence complete shock cooling lightcurve of a SN IIb with the Kepler telescope

P. Armstrong, B. E. Tucker, A. Rest +69

SN 2017jgh is a type IIb supernova discovered by Pan-STARRS during the C16/C17 campaigns of the Kepler/K2 mission. Here we present the Kepler/K2 and ground based observations of SN…

astro-ph.HE2021★ 9 cited

J2102+6015: a young radio source at z = 4.575

Yingkang Zhang, Tao An, Sándor Frey +7

Jets of high-redshift active galactic nuclei (AGNs) can be used to directly probe the activity of the black holes in the early Universe. Radio sources with jets misaligned with res…

astro-ph.HE2021★ 16 cited

SN 2018agk: A Prototypical Type Ia Supernova with a Smooth Power-law Rise in Kepler (K2)

Qinan Wang, Armin Rest, Yossef Zenati +73

We present the 30-min cadence Kepler/K2 light curve of the Type Ia supernova (SN Ia) SN 2018agk, covering approximately one week before explosion, the full rise phase and the decli…

astro-ph.HE2021★ 7 cited

The Highly Self-Absorbed Blazar, PKS\,1351018

Brian Punsly, Sandor Frey, Cormac Reynolds +5

PKS\,1351018 at a redshift of is one of the most luminous, steady synchrotron sources with a luminosity \,erg~s. The synchrotron luminosity does not s…

astro-ph.HE2021★ 91 cited

Search for intermediate mass black hole binaries in the third observing run of Advanced LIGO and Advanced Virgo

The LIGO Scientific Collaboration, the Virgo Collaboration, the KAGRA Collaboration

Intermediate-mass black holes (IMBHs) span the approximate mass range --, between black holes (BHs) formed by stellar collapse and the supermassive BHs at the c…

astro-ph.HE2021★ 33 cited

The Radius of PSR J0740+6620 from NICER and XMM-Newton Data

M. C. Miller, F. K. Lamb, A. J. Dittmann +25

PSR J07406620 has a gravitational mass of , which is the highest reliably determined mass of any neutron star. As a result, a measurement of its radius wil…

astro-ph.HE2021★ 1.2k cited

A NICER View of the Massive Pulsar PSR J0740+6620 Informed by Radio Timing and XMM-Newton Spectroscopy

Thomas E. Riley, Anna L. Watts, Paul S. Ray +27

We report on Bayesian estimation of the radius, mass, and hot surface regions of the massive millisecond pulsar PSR J07406620, conditional on pulse-profile modeling of Neutron S…

astro-ph.HE2021★ 979 cited

Refined Mass and Geometric Measurements of the High-Mass PSR J0740+6620

Emmanuel Fonseca, H. Thankful Cromartie, Timothy T. Pennucci +42

We report results from continued timing observations of PSR J0740+6620, a high-mass, 2.8-ms radio pulsar in orbit with a likely ultra-cool white dwarf companion. Our data set consi…

astro-ph.HE2021

Statistical search for angular non-stationarities of long gamma-ray burst jets using Swift data

Andor Budai, Peter Raffai, Balint Borgulya +2

In Budai et al. (2020) we argued that angular non-stationarities of gamma-ray burst (GRB) jets can result in a statistical connection between the angle values deduced from jet brea…

astro-ph.HE2021★ 50 cited

Metallicity-dependent nucleosynthetic yields of Type Ia supernovae originating from double detonations of sub-M white dwarfs

Sabrina Gronow, Benoit Cote, Florian Lach +4

Double detonations in sub-Chandrasekhar mass carbon-oxygen white dwarfs with helium shell are a potential explosion mechanism for a Type Ia supernova (SNe Ia). It comprises a shell…

astro-ph.HE2021★ 54 cited

Measurements of pulse jitter and single-pulse variability in millisecond pulsars using MeerKAT

A. Parthasarathy, M. Bailes, R. M. Shannon +18

Using the state-of-the-art SKA precursor, the MeerKAT radio telescope, we explore the limits to precision pulsar timing of millisecond pulsars achievable due to pulse stochasticity…

astro-ph.HE2021★ 40 cited

The Peculiar Transient AT2018cow: A Possible Origin of A Type Ibn/IIn Supernova

Danfeng Xiang, Xiaofeng Wang, Weili Lin +47

We present our photometric and spectroscopic observations on the peculiar transient AT2018cow. The multi-band photometry covers from peak to 70 days and the spectroscopy rang…