Showing 2017 · astro-ph.HEShow all

31 papers · 2 filters

astro-ph.HE2017★ 112 cited

On the Progenitor of Binary Neutron Star Merger GW170817

The LIGO Scientific Collaboration, the Virgo Collaboration, B. P. Abbott +1095

On 2017 August 17 the merger of two compact objects with masses consistent with two neutron stars was discovered through gravitational-wave (GW170817), gamma-ray (GRB 170817A), and…

astro-ph.HE2017★ 64 cited

TeV gamma-ray observations of the binary neutron star merger GW170817 with H.E.S.S

H. E. S. S. Collaboration, :, H. Abdalla +250

We search for high-energy gamma-ray emission from the binary neutron star merger GW170817 with the H.E.S.S. Imaging Air Cherenkov Telescopes. The observations presented here have b…

astro-ph.HE2017★ 1 cited

: a new observable for photon-hadron discrimination in hybrid air shower events

M. Niechciol, M. Risse, P. Ruehl +3

To search for ultra-high-energy photons in primary cosmic rays, air shower observables are needed that allow a good separation between primary photons and primary hadrons. We prese…

astro-ph.HE2017★ 34 cited

Cloud ablation by a relativistic jet and the extended flare in CTA 102 in 2016 and 2017

M. Zacharias, M. Böttcher, F. Jankowsky +3

In late 2016 and early 2017 the flat spectrum radio quasar CTA 102 exhibited a very strong and long-lasting outburst. The event can be described by a roughly 2 months long increase…

astro-ph.HE2017★ 1.3k cited

GW170608: Observation of a 19-solar-mass Binary Black Hole Coalescence

The LIGO Scientific Collaboration, the Virgo Collaboration, B. P. Abbott +1101

On June 8, 2017 at 02:01:16.49 UTC, a gravitational-wave signal from the merger of two stellar-mass black holes was observed by the two Advanced LIGO detectors with a network signa…

astro-ph.HE2017★ 72 cited

Evidence for Dynamically Driven Formation of the GW170817 Neutron Star Binary in NGC 4993

A. Palmese, W. Hartley, F. Tarsitano +89

We present a study of NGC 4993, the host galaxy of the GW170817 gravitational wave event, the GRB170817A short gamma-ray burst (sGRB) and the AT2017gfo kilonova. We use Dark Energy…

astro-ph.HE2017★ 193 cited

Search for High-energy Neutrinos from Binary Neutron Star Merger GW170817 with ANTARES, IceCube, and the Pierre Auger Observatory

A. Albert, M. Andre, M. Anghinolfi +1931

The Advanced LIGO and Advanced Virgo observatories recently discovered gravitational waves from a binary neutron star inspiral. A short gamma-ray burst (GRB) that followed the merg…

astro-ph.HE2017★ 3.6k cited

Gravitational Waves and Gamma-rays from a Binary Neutron Star Merger: GW170817 and GRB 170817A

LIGO Scientific Collaboration, Virgo Collaboration, Fermi Gamma-Ray Burst Monitor +1

On 2017 August 17, the gravitational-wave event GW170817 was observed by the Advanced LIGO and Virgo detectors, and the gamma-ray burst (GRB) GRB 170817A was observed independently…

astro-ph.HE2017★ 19 cited

Accurate ray tracing of realistic neutron star atmospheres for constraining their parameters

F. H. Vincent, M. Bejger, A. Rozanska +9

Thermal dominated X-ray spectra of neutron stars in quiescent transient X-ray binaries and neutron stars that undergo thermonuclear bursts are sensitive to mass and radius. The mas…

astro-ph.HE2017★ 266 cited

Search for post-merger gravitational waves from the remnant of the binary neutron star merger GW170817

The LIGO Scientific Collaboration, the Virgo Collaboration, B. P. Abbott +1105

The first observation of a binary neutron star coalescence by the Advanced LIGO and Advanced Virgo gravitational-wave detectors offers an unprecedented opportunity to study matter…

astro-ph.HE2017★ 27 cited

Fermionic Light Dark Matter particles and the New Physics of Neutron Stars

M. Cermeño, M. Ángeles Pérez-García, Joseph Silk

Dark Matter constitutes most of the matter in the presently accepted cosmological model for our Universe. The extreme conditions of ordinary baryonic matter, namely high density an…

astro-ph.HE2017★ 888 cited

A kilonova as the electromagnetic counterpart to a gravitational-wave source

S. J. Smartt, T. -W. Chen, A. Jerkstrand +118

Gravitational waves were discovered with the detection of binary black hole mergers and they should also be detectable from lower mass neutron star mergers. These are predicted to…

astro-ph.HE2017★ 1k cited

The Electromagnetic Counterpart of the Binary Neutron Star Merger LIGO/VIRGO GW170817. II. UV, Optical, and Near-IR Light Curves and Comparison to Kilonova Models

P. S. Cowperthwaite, E. Berger, V. A. Villar +141

We present UV, optical, and NIR photometry of the first electromagnetic counterpart to a gravitational wave source from Advanced LIGO/Virgo, the binary neutron star merger GW170817…

astro-ph.HE2017★ 584 cited

The Electromagnetic Counterpart of the Binary Neutron Star Merger LIGO/Virgo GW170817. I. Dark Energy Camera Discovery of the Optical Counterpart

M. Soares-Santos, D. E. Holz, J. Annis +142

We present the Dark Energy Camera (DECam) discovery of the optical counterpart of the first binary neutron star merger detected through gravitational wave emission, GW170817. Our o…

astro-ph.HE2017★ 74 cited

General relativistic effects on the orbit of the S2 star with GRAVITY

M. Grould, F. H. Vincent, T. Paumard +1

The goal of this paper is to investigate the detection by GRAVITY of different relativistic effects affecting the astrometric and/or spectroscopic observations of S2 such as the tr…

astro-ph.HE2017★ 227 cited

Estimating the Contribution of Dynamical Ejecta in the Kilonova Associated with GW170817

The LIGO Scientific Collaboration, the Virgo Collaboration, B. P. Abbott +1100

The source of the gravitational-wave signal GW170817, very likely a binary neutron star merger, was also observed electromagnetically, providing the first multi-messenger observati…

astro-ph.HE2017★ 409 cited

Observation of a Large-scale Anisotropy in the Arrival Directions of Cosmic Rays above eV

The Pierre Auger Collaboration, A. Aab, P. Abreu +404

Cosmic rays are atomic nuclei arriving from outer space that reach the highest energies observed in nature. Clues to their origin come from studying the distribution of their arriv…

astro-ph.HE2017★ 22 cited

Luminous and high-frequency peaked blazars: the origin of the -ray emission from PKS 1424+240

M. Cerruti, W. Benbow, X. Chen +3

The current generation of Cherenkov telescopes, together with Fermi-LAT, have greatly increased our knowledge of -ray blazars. Among them, the high-frequency-peaked BL Lacertae…

astro-ph.HE2017★ 79 cited

Measurement of the EBL spectral energy distribution using the VHE gamma-ray spectra of H.E.S.S. blazars

H. E. S. S. Collaboration, :, H. Abdalla +256

Very high-energy gamma-rays (VHE, E>100 GeV) propagating over cosmological distances can interact with the low-energy photons of the extragalactic background light (EBL) and produc…

astro-ph.HE2017★ 16 cited

LSQ14efd: observations of the cooling of a shock break-out event in a type Ic Supernova

C. Barbarino, M. T. Botticella, M. Dall'Ora +29

We present the photometric and spectroscopic evolution of the type Ic supernova LSQ14efd, discovered by the La Silla QUEST survey and followed by PESSTO. LSQ14efd was discovered fe…

astro-ph.HE2017★ 7 cited

Multi-epoch intra-night optical monitoring of 8 radio-quiet BL Lac candidates

P. Kumar, Gopal-Krishna, C. S. Stalin +3

For a new sample of 8 weak-line-quasars (WLQs) we report a sensitive search in 20 intranight monitoring sessions, for blazar-like optical flux variations on hour-like and longer ti…

astro-ph.HE2017★ 108 cited

Indications for a high-rigidity break in the cosmic-ray diffusion coefficient

Yoann Genolini, Pasquale D. Serpico, Mathieu Boudaud +9

Using cosmic-ray boron to carbon ratio (B/C) data recently released by the AMS-02 experiment, we find tantalizing indications ({\it decisive evidence}, in Bayesian terms) in favor…

astro-ph.HE2017★ 364 cited

The evolutionary roads leading to low effective spins, high black hole masses, and O1/O2 rates of LIGO/Virgo binary black holes

K. Belczynski, J. Klencki, C. E. Fields +31

All ten LIGO/Virgo binary black hole (BH-BH) coalescences reported from the O1/O2 runs have near zero effective spins. There are only three potential explanations of this fact. If…

astro-ph.HE2017★ 82 cited

Upper Limits on Gravitational Waves from Scorpius X-1 from a Model-Based Cross-Correlation Search in Advanced LIGO Data

The LIGO Scientific Collaboration, the Virgo Collaboration, B. P. Abbott +1046

We present the results of a semicoherent search for continuous gravitational waves from the low-mass X-ray binary Scorpius X-1, using data from the first Advanced LIGO observing ru…