output
20082026
most citedFirst M87 Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole

4.3k citations

Showing 2018 · astro-ph.HEShow all

20 papers · 2 filters

astro-ph.HE2018★ 30 cited

NuSTAR Detection of X-rays Concurrent with Gamma Rays in the Nova V5855 Sgr

Thomas Nelson, Koji Mukai, Kwan-Lok Li +7

We report the first detection of hard (>10 keV) X-ray emission simultaneous with gamma rays in a nova eruption. Observations of the nova V5855 Sgr carried out with the NuSTAR satel…

astro-ph.HE2018★ 80 cited

Searches for Continuous Gravitational Waves from Fifteen Supernova Remnants and Fomalhaut b with Advanced LIGO

The LIGO Scientific Collaboration, the Virgo Collaboration, B. P. Abbott +1129

We describe directed searches for continuous gravitational waves from sixteen well localized candidate neutron stars assuming none of the stars has a binary companion. The searches…

astro-ph.HE2018★ 2 cited

Discovery of an X-ray nebula in the field of millisecond pulsar PSR J1911-1114

Jongsu Lee, C. Y. Hui, J. Takata +1

We have discovered an extended X-ray feature which is apparently associated with millisecond pulsar (MSP) PSR J1911-1114 from a XMM-Newton observation, which extends for ~1' and th…

astro-ph.HE2018★ 901 cited

Binary Black Hole Population Properties Inferred from the First and Second Observing Runs of Advanced LIGO and Advanced Virgo

The LIGO Scientific Collaboration, the Virgo Collaboration, B. P. Abbott +1138

We present results on the mass, spin, and redshift distributions with phenomenological population models using the ten binary black hole mergers detected in the first and second ob…

astro-ph.HE2018★ 3.5k cited

GWTC-1: A Gravitational-Wave Transient Catalog of Compact Binary Mergers Observed by LIGO and Virgo during the First and Second Observing Runs

The LIGO Scientific Collaboration, the Virgo Collaboration, B. P. Abbott +1148

We present the results from three gravitational-wave searches for coalescing compact binaries with component masses above 1 during the first and second observing…

astro-ph.HE2018★ 68 cited

Constraints on the diffuse photon flux with energies above eV using the surface detector of the Telescope Array experiment

Telescope Array Collaboration, R. U. Abbasi, M. Abe +139

We present the results of the search for ultra-high-energy photons with nine years of data from the Telescope Array surface detector. A multivariate classifier is built upon 16 rec…

astro-ph.HE2018★ 46 cited

Shock Waves and Energy Dissipation in Magnetohydrodynamic Turbulence

Junseong Park, Dongsu Ryu

Shock waves play an important role in turbulent astrophysical media by compressing the gas and dissipating the turbulent energy into the thermal energy. We here study shocks in mag…

astro-ph.HE2018★ 53 cited

Testing a reported correlation between arrival directions of ultrahigh-energy cosmic rays and a flux pattern from nearby starburst galaxies using Telescope Array data

Telescope Array Collaboration, R. U. Abbasi, M. Abe +138

The Pierre Auger Collaboration (Auger) recently reported a correlation between the arrival directions of cosmic rays with energies above 39 EeV and the flux pattern of 23 nearby st…

astro-ph.HE2018★ 44 cited

A Fermi Gamma-ray Burst Monitor Search for Electromagnetic Signals Coincident with Gravitational-Wave Candidates in Advanced LIGO's First Observing Run

ray Burst Monitor Team, The LIGO Scientific Collaboration, the Virgo Collaboration +1160

We present a search for prompt gamma-ray counterparts to compact binary coalescence gravitational wave (GW) candidates from Advanced LIGO's first observing run (O1). As demonstrate…

astro-ph.HE2018★ 49 cited

Constraining the p-mode--g-mode tidal instability with GW170817

The LIGO Scientific Collaboration, The Virgo Collaboration, B. P. Abbott +1136

We analyze the impact of a proposed tidal instability coupling -modes and -modes within neutron stars on GW170817. This non-resonant instability transfers energy from the orb…

astro-ph.HE2018★ 59 cited

Mass composition of ultra-high-energy cosmic rays with the Telescope Array Surface Detector Data

Telescope Array Collaboration, R. U. Abbasi, M. Abe +139

The results on ultra-high-energy cosmic rays (UHECR) mass composition obtained with the Telescope Array surface detector are presented. The analysis employs the boosted decision tr…

astro-ph.HE2018★ 49 cited

Proton Acceleration in Weak Quasi-parallel Intracluster Shocks: Injection and Early Acceleration

Ji-Hoon Ha, Dongsu Ryu, Hyesung Kang +1

Collisionless shocks with low sonic Mach numbers, , are expected to accelerate cosmic ray (CR) protons via diffusive shock acceleration (DSA) in the intraclus…

astro-ph.HE2018★ 5 cited

Investigation of the High-Energy Emission from the Magnetar-like Pulsar PSR J1119-6127 after the 2016 Outburst

Lupin Chun-Che Lin, Hui-Hui Wang, Kwan-Lok Li +7

PSR J1119-6127 is a radio pulsar that behaved magnetar like bursts, and we performed a comprehensive investigation of this pulsar using the archival high-energy observations obtain…

astro-ph.HE2018★ 69 cited

Study of muons from ultra-high energy cosmic ray air showers measured with the Telescope Array experiment

Telescope Array Collaboration, R. U. Abbasi, M. Abe +138

One of the uncertainties in interpretation of ultra-high energy cosmic ray (UHECR) data comes from the hadronic interaction models used for air shower Monte Carlo (MC) simulations.…

astro-ph.HE2018★ 9 cited

X-ray study of Variable Gamma-ray Pulsar PSR J2021+4026

H. H. Wang, J. Takata., C. -P. Hu +2

PSR~J2021+4026 showed a sudden decrease in the gamma-ray emission at the glitch that occurred around 2011, October 16, and a relaxation of the flux to the pre-glitch state at aroun…

astro-ph.HE2018★ 123 cited

The Cosmic-Ray Energy Spectrum between 2 PeV and 2 EeV Observed with the TALE detector in monocular mode

R. U. Abbasi, M. Abe, T. Abu-Zayyad +137

We report on a measurement of the cosmic ray energy spectrum by the Telescope Array Low-Energy Extension (TALE) air fluorescence detector. The TALE air fluorescence detector is als…

astro-ph.HE2018★ 32 cited

Evidence of Intermediate-Scale Energy Spectrum Anisotropy of Cosmic Rays E10 eV with the Telescope Array Surface Detector

R. U. Abbasi, M. Abe, T. Abu-Zayyad +136

An intermediate-scale energy spectrum anisotropy has been found in the arrival directions of ultra-high energy cosmic rays of energies above eV in the northern hemisphe…

astro-ph.HE2018★ 18 cited

Effects of Alfvenic Drift on Diffusive Shock Acceleration at Weak Cluster Shocks

Hyesung Kang, Dongsu Ryu

Non-detection of -ray emission from galaxy clusters has challenged diffusive shock acceleration (DSA) of cosmic-ray (CR) protons at weak collisionless shocks that are expected t…

astro-ph.HE2018★ 148 cited

Depth of Ultra High Energy Cosmic Ray Induced Air Shower Maxima Measured by the Telescope Array Black Rock and Long Ridge FADC Fluorescence Detectors and Surface Array in Hybrid Mode

Telescope Array Collaboration, R. U. Abbasi, M. Abe +135

The Telescope Array observatory utilizes fluorescence detectors and surface detectors to observe air showers produced by ultra high energy cosmic rays in the Earth's atmosphere. Co…

astro-ph.HE2018★ 16 cited

Evidence for Declination Dependence of the Ultrahigh Energy Cosmic Ray Spectrum in the Northern Hemisphere

R. U. Abbasi, T. Abu-Zayyad, M. Allen +154

Telescope Array (TA) is the largest experiment in the Northern Hemisphere studying ultrahigh energy cosmic rays. TA measurements of the cosmic ray spectrum using the surface detect…