output
19962026
Showing 2021 · astro-ph.HEShow all

19 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★ 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★ 72 cited

Exploring Features in the Binary Black Hole Population

Vaibhav Tiwari

Vamana is a mixture model framework that infers the astrophysical distribution of chirp mass, mass ratio, and spin component aligned with the orbital angular momentum for the binar…

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★ 28 cited

Less than 1% of Core-Collapse Supernovae in the local universe occur in elliptical galaxies

I. Irani, S. J. Prentice, S. Schulze +39

We present observations of three Core-collapse supernovae (CCSNe) in elliptical hosts, detected by the Zwicky Transient Facility Bright Transient Survey (BTS). SN 2019ape is a SN I…

astro-ph.HE2021★ 9 cited

Transitional events in the spectrophotometric regime between stripped envelope and superluminous supernovae

S. J. Prentice, C. Inserra, S. Schulze +24

The division between stripped-envelope supernovae (SE-SNe) and superluminous supernovae (SLSNe) is not well defined in either photometric or spectroscopic space. While a sharp lumi…

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★ 1 cited

A detailed spectroscopic study of Tidal Disruption Events

P. Charalampopoulos, G. Leloudas, D. B. Malesani +19

Spectroscopically, TDEs are characterized by broad ( 10 km/s) emission lines and show large diversity as well as different line profiles. After carefully and consistently per…

astro-ph.HE2021★ 2 cited

Intermediate-luminosity red transients: Spectrophotometric properties and connection to electron-capture supernova explosions

Y. -Z. Cai, A. Pastorello, M. Fraser +56

We present the spectroscopic and photometric study of five intermediate-luminosity red transients (ILRTs), namely AT 2010dn, AT 2012jc, AT 2013la, AT 2013lb, and AT 2018aes. They s…

astro-ph.HE2021★ 5 cited

SN 2019hcc: A Type II Supernova Displaying Early O II Lines

Eleonora Parrag, Cosimo Inserra, Steve Schulze +18

We present optical spectroscopy together with ultraviolet, optical and near-infrared photometry of SN 2019hcc, which resides in a host galaxy at redshift 0.044, displaying a sub-so…

astro-ph.HE2021★ 9 cited

SN 2020cpg: an energetic link between type IIb and Ib supernovae

K. Medler, P. A. Mazzali, J. Teffs +18

Stripped-envelope supernovae (SE-SNe) show a wide variety of photometric and spectroscopic properties. This is due to the different potential formation channels and the stripping m…

astro-ph.HE2021★ 55 cited

Remnant Black Hole Kicks and Implications for Hierarchical Mergers

Parthapratim Mahapatra, Anuradha Gupta, Marc Favata +2

When binary black holes merge in dense star clusters, their remnants can pair up with other black holes in the cluster, forming heavier and heavier black holes in a process called…

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★ 31 cited

The double-peaked type Ic Supernova 2019cad: another SN 2005bf-like object

C. P. Gutiérrez, M. C. Bersten, M. Orellana +23

We present the photometric and spectroscopic evolution of supernova (SN) 2019cad during the first days from explosion. Based on the light curve morphology, we find that S…

astro-ph.HE2021★ 39 cited

Detection of Galactic and Extragalactic Millimeter-Wavelength Transient Sources with SPT-3G

S. Guns, A. Foster, C. Daley +119

High-angular-resolution cosmic microwave background experiments provide a unique opportunity to conduct a survey of time-variable sources at millimeter wavelengths, a population wh…

astro-ph.HE2021★ 8 cited

Real-time Discovery of AT2020xnd: A Fast, Luminous Ultraviolet Transient with Minimal Radioactive Ejecta

Daniel A. Perley, Anna Y. Q. Ho, Yuhan Yao +29

The many unusual properties of the enigmatic AT2018cow suggested that at least some subset of the empirical class of fast blue optical transients (FBOTs) represents a genuinely new…

astro-ph.HE2021★ 23 cited

Optical and ultraviolet pulsed emission from an accreting millisecond pulsar

F. Ambrosino, A. Miraval Zanon, A. Papitto +28

Millisecond spinning, low magnetic field neutron stars are believed to attain their fast rotation in a 0.1-1 Gyr-long phase during which they accrete matter endowed with angular mo…

astro-ph.HE2021★ 24 cited

Progenitor, environment, and modelling of the interacting transient, AT 2016jbu (Gaia16cfr)

S. J. Brennan, M. Fraser, J. Johansson +67

We present the bolometric lightcurve, identification and analysis of the progenitor candidate, and preliminary modelling of AT2016jbu (Gaia16cfr). We find a progenitor consistent w…

astro-ph.HE2021★ 35 cited

Flipping spins in mass transferring binaries and origin of spin-orbit misalignment in binary black holes

Jakob Stegmann, Fabio Antonini

Close stellar binaries are prone to undergo a phase of stable mass transfer in which a star loses mass to its companion. Assuming that the donor star loses mass along the instantan…