output
19912026
most citedObservation of Gravitational Waves from a Binary Black Hole Merger

14.2k citations

Showing 2021 · astro-ph.HEShow all

15 papers · 2 filters

astro-ph.HE2021★ 75 cited

ARGO-YBJ Observation of the Large-scale Anisotropy During the Solar Minimum between Cycles 23 and 24

Shuwang Cui

This paper reports on the measurement of the large-scale anisotropy in the distribution of cosmic-ray arrival directions using the data collected by the air shower detector ARGO-YB…

astro-ph.HE2021★ 22 cited

MOMO IV: The complete Swift X-ray and UV/optical light curve and characteristic variability of the blazar OJ 287 during the last two decades

S. Komossa, D. Grupe, L. C. Gallo +5

We are carrying out a dense monitoring of the blazar OJ 287 with Swift since late 2015 as part of our project MOMO (Multiwavelength Observations and Modeling of OJ 287). This is th…

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★ 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★ 25 cited

Variability and Spectral Characteristics of Three Flaring Gamma-ray Quasars Observed by VERITAS and Fermi-LAT

C. B. Adams, J. Batshoun, W. Benbow +63

Flat spectrum radio quasars (FSRQs) are the most luminous blazars at GeV energies, but only rarely emit detectable fluxes of TeV gamma rays, typically during bright GeV flares. We…

astro-ph.HE2021★ 114 cited

The energy spectrum of cosmic rays beyond the turn-down around eV as measured with the surface detector of the Pierre Auger Observatory

The Pierre Auger Collaboration, P. Abreu, M. Aglietta +374

We present a measurement of the cosmic-ray spectrum above 100\,PeV using the part of the surface detector of the Pierre Auger Observatory that has a spacing of 750~m. An inflection…

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

Multimessenger Analysis Strategy for Core-Collapse Supernova Search: Gravitational Waves and Low-energy Neutrinos

Odysse Halim, Claudio Casentini, Marco Drago +4

Core-collapse supernovae are fascinating astrophysical objects for multimessenger studies. Gravitational waves (GWs) are expected to play a role in the supernova explosion mechanis…

astro-ph.HE2021★ 23 cited

Catalog of Long-Term Transient Sources in the First 10 Years of Fermi-LAT Data

L. Baldini, J. Ballet, D. Bastieri +112

We present the first Fermi Large Area Telescope (LAT) catalog of long-term -ray transient sources (1FLT). This comprises sources that were detected on monthly time intervals dur…

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★ 39 cited

X-ray spectral components of the blazar and binary black hole candidate OJ 287 (2005-2020)

S. Komossa, D. Grupe, M. L. Parker +12

We present a comprehensive analysis of all XMM-Newton spectra of OJ 287 spanning 15 years of X-ray spectroscopy of this bright blazar. We also report the latest results from our de…

astro-ph.HE2021★ 38 cited

Gamma rays from Fast Black-Hole Winds

LAT Collaboration

Massive black holes at the centers of galaxies can launch powerful wide-angle winds that, if sustained over time, can unbind the gas from the stellar bulges of galaxies. These wind…

astro-ph.HE2021★ 26 cited

Study of the 27-day variations in GCR fluxes during 2007-2008 based on PAMELA and ARINA observations

R. Modzelewska, G. A. Bazilevskaya, M. Boezio +11

Using measurements from the PAMELA and ARINA spectrometers onboard the RESURS DK-1 satellite, we have examined the 27-day intensity variations in galactic cosmic ray (GCR) proton f…

astro-ph.HE2021★ 59 cited

The First Fermi-LAT Solar Flare Catalog

M. Ajello, L. Baldini, D. Bastieri +82

We present the first Fermi - Large Area Telescope (LAT) solar flare catalog covering the 24 th solar cycle. This catalog contains 45 Fermi -LAT solar flares (FLSFs) with emission i…