activity
20192025
most citedA very-high-energy component deep in the Gamma-ray Burst afterglow

274 citations · 1k across the 30 of their papers we have counts for

collaborators
Showing astro-ph.HEShow all

21 papers · 1 filter

astro-ph.HE2025★ 5 cited

Combined dark matter search towards dwarf spheroidal galaxies with Fermi-LAT, HAWC, H.E.S.S., MAGIC, and VERITAS

LAT Collaboration, S. Abdollahi, L. Baldini +586

Dwarf spheroidal galaxies (dSphs) are excellent targets for indirect dark matter (DM) searches using gamma-ray telescopes because they are thought to have high DM content and a low…

astro-ph.HE2023★ 31 cited

Discovery of a Radiation Component from the Vela Pulsar Reaching 20 Teraelectronvolts

The H. E. S. S. Collaboration, :, F. Aharonian +178

Gamma-ray observations have established energetic isolated pulsars as outstanding particle accelerators and antimatter factories in the Galaxy. There is, however, no consensus rega…

astro-ph.HE2023★ 22 cited

Sensitivity of the Cherenkov Telescope Array to spectral signatures of hadronic PeVatrons with application to Galactic Supernova Remnants

The Cherenkov Telescope Array Consortium, F. Acero, A. Acharyya +356

The local Cosmic Ray (CR) energy spectrum exhibits a spectral softening at energies around 3~PeV. Sources which are capable of accelerating hadrons to such energies are called hadr…

astro-ph.HE2022★ 92 cited

Time-resolved hadronic particle acceleration in the recurrent Nova RS Ophiuchi

H. E. S. S. Collaboration, F. Aharonian, F. Ait Benkhali +171

Recurrent Novae are repeating thermonuclear explosions in the outer layers of white dwarfs, due to the accretion of fresh material from a binary companion. The shock generated by e…

astro-ph.HE2021★ 13 cited

A MeerKAT, e-MERLIN, H.E.S.S. and Swift search for persistent and transient emission associated with three localised FRBs

James O. Chibueze, M. Caleb, L. Spitler +156

We report on a search for persistent radio emission from the one-off Fast Radio Burst (FRB) 20190714A, as well as from two repeating FRBs, 20190711A and 20171019A, using the MeerKA…

astro-ph.HE2021★ 15 cited

H.E.S.S. follow-up observations of Binary Black Hole Coalescence events during the second and third Gravitational Waves observing runs of Advanced LIGO and Advanced Virgo

H. E. S. S. collaboration, :, H. Abdalla +151

We report on the observations of four well-localized binary black hole (BBH) mergers by the High Energy Stereoscopic System (H.E.S.S.) during the second and third observing runs of…

astro-ph.HE2021★ 13 cited

Searching for TeV gamma-ray emission from SGR\,1935+2154 during its 2020 X-ray and radio bursting phase

H. E. S. S. Collaboration, :, H. Abdalla +251

Magnetar hyperflares are the most plausible explanation for fast radio bursts (FRB) -- enigmatic powerful radio pulses with durations of several milliseconds and high brightness te…

astro-ph.HE2021★ 24 cited

Observation of the gamma-ray binary HESS J0632+057 with the H.E.S.S., MAGIC, and VERITAS telescopes

C. B. Adams, W. Benbow, A. Brill +409

The results of gamma-ray observations of the binary system HESS J0632+057 collected during 450 hours over 15 years, between 2004 and 2019, are presented. Data taken with the atmosp…

astro-ph.HE2021★ 2 cited

Search for dark matter annihilation signals from the Galactic Center with the H.E.S.S. Inner Galaxy Survey

A. Montanari, E. Moulin, D. Malyshev

The presence of dark matter (DM) is suggested by a wealth of astrophysical and cosmological measurements. However, its underlying nature is yet unknown. Among the most promising ca…

astro-ph.HE2021

Evidence of 100 TeV -ray emission from HESS J1702-420: A new PeVatron candidate

L. Giunti, B. Khelifi, K. Kosack +1

The identification of active PeVatrons, hadronic particle accelerators reaching the knee of the cosmic-ray spectrum (at the energy of few PeV), is crucial to understand the origin…

astro-ph.HE2021★ 13 cited

LMC N132D: A mature supernova remnant with a power-law gamma-ray spectrum extending beyond 8 TeV

H. E. S. S. Collaboration, :, H. Abdalla +233

We analyzed 252 hours of High Energy Stereoscopic System (H.E.S.S.) observations towards the supernova remnant (SNR) LMC N132D that were accumulated between December 2004 and March…

astro-ph.HE2021★ 14 cited

Search for dark matter annihilation signals from unidentified Fermi-LAT objects with H.E.S.S

H. E. S. S. Collaboration, H. Abdallah, F. Aharonian +226

Cosmological -body simulations show that Milky Way-sized galaxies harbor a population of unmerged dark matter subhalos. These subhalos could shine in gamma-rays and be eventuall…

astro-ph.HE2021★ 24 cited

Evidence of 100 TeV -ray emission from HESS J1702-420: A new PeVatron candidate

H. Abdalla, F. Aharonian, F. Ait Benkhali +232

The identification of PeVatrons, hadronic particle accelerators reaching the knee of the cosmic ray spectrum (few eV), is crucial to understand the origin of cosmic rays…

astro-ph.HE2021★ 172 cited

Revealing x-ray and gamma ray temporal and spectral similarities in the GRB 190829A afterglow

H. E. S. S. Collaboration

Gamma-ray bursts (GRBs), which are bright flashes of gamma rays from extragalactic sources followed by fading afterglow emission, are associated with stellar core collapse events.…

astro-ph.HE2021★ 19 cited

Search for dark matter annihilation in the dwarf irregular galaxy WLM with H.E.S.S

H. E. S. S. Collaboration, H. Abdallah, R. Adam +232

We search for an indirect signal of dark matter through very high-energy gamma rays from the Wolf-Lundmark-Melotte (WLM) dwarf irregular galaxy. The pair annihilation of dark matte…

astro-ph.HE2020★ 31 cited

Observation of a sudden cessation of a very-high-energy gamma-ray flare in PKS 1510-089 with H.E.S.S. and MAGIC in May 2016

H. E. S. S. Collaboration, H. Abdalla, R. Adam +430

The flat spectrum radio quasar (FSRQ) PKS 1510-089 is known for its complex multiwavelength behavior, and is one of only a few FSRQs detected at very high energy (VHE, GeV…

astro-ph.HE2020★ 17 cited

An extreme particle accelerator in the Galactic plane: HESS J1826130

H. E. S. S. Collaboration, H. Abdalla, R. Adam +236

The unidentified very-high-energy (VHE; E 0.1 TeV) -ray source, HESS J1826130, was discovered with the High Energy Stereoscopic System (HESS) in the Galactic plane. The a…

astro-ph.HE2020★ 59 cited

Search for dark matter signals towards a selection of recently-detected DES dwarf galaxy satellites of the Milky Way with H.E.S.S

H. E. S. S. Collaboration, :, H. Abdallah +227

Dwarf spheroidal galaxy satellites of the Milky Way are prime targets for indirect detection of dark matter with gamma rays due to their proximity, high dark matter content and abs…

astro-ph.HE2020★ 18 cited

Probing the magnetic field in the GW170817 outflow using H.E.S.S. observations

H. E. S. S. Collaboration, :, H. Abdalla +230

The detection of the first electromagnetic counterpart to the binary neutron star (BNS) merger remnant GW170817 established the connection between short -ray bursts and BNS merg…

astro-ph.HE2020★ 24 cited

Very high energy -ray emission from two blazars of unknown redshift and upper limits on their distance

H. E. S. S. Collaboration, H. Abdalla, R. Adam +225

We report on the detection of very-high-energy (VHE; GeV) -ray emission from the BL Lac objects KUV 00311-1938 and PKS 1440-389 with the High Energy Stereoscopic Syste…

astro-ph.HE2019★ 274 cited

A very-high-energy component deep in the Gamma-ray Burst afterglow

H. Abdalla R. Adam F. Aharonian F. Ait Benkhali E. O. Anguener M. Arakawa, C. Arcaro, C. Armand +219

Gamma-ray bursts (GRBs) are brief flashes of gamma rays, considered to be the most energetic explosive phenomena in the Universe. The emission from GRBs comprises a short (typicall…