activity
19972026
most citedThe central engine of gamma-ray bursters

237 citations · 1.2k across the 22 of their papers we have counts for

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16 papers · 1 filter

astro-ph.HE2026

Scrutinizing the 2020 multiwavelength outburst of PKS 0903-57 through observations with H.E.S.S

A. Acharyya, F. Aharonian, F. Ait Benkhali +138

The blazar PKS 0903-57 has recently been classified as a flat spectrum radio quasar at a redshift of . In March and April 2020, Fermi-LAT and AGILE reported tremendous ac…

astro-ph.HE2025★ 3 cited

Detection of very-high-energy gamma-ray emission from Eta Carinae during its 2020 periastron passage

H. E. S. S. Collaboration, F. Aharonian, F. Ait Benkhali +137

The colliding-wind binary system Carinae has been identified as a source of high-energy (HE, below 100\,GeV) and very-high-energy (VHE, above 100\,GeV) gamma rays i…

astro-ph.HE2024★ 4 cited

Multi-wavelength study of OT 081: broadband modelling of a transitional blazar

MAGIC Collaboration, H. Abe, S. Abe +270

OT 081 is a well-known, luminous blazar that is remarkably variable in many energy bands. We present the first broadband study of the source which includes very-high-energy (VHE, $…

astro-ph.HE2024★ 12 cited

Very-high-energy -ray emission from young massive star clusters in the Large Magellanic Cloud

F. Aharonian, F. Ait Benkhali, J. Aschersleben +129

The Tarantula Nebula in the Large Magellanic Cloud is known for its high star formation activity. At its center lies the young massive star cluster R136, providing a significant am…

astro-ph.HE2024★ 7 cited

Galactic transient sources with the Cherenkov Telescope Array Observatory

Cherenkov Telescope Array Observatory Consortium

A wide variety of Galactic sources show transient emission at soft and hard X-ray energies: low- and high-mass X-ray binaries containing compact objects, isolated neutron stars exh…

astro-ph.HE2024★ 12 cited

Fires in the deep: The luminosity distribution of early-time gamma-ray-burst afterglows in light of the Gamow Explorer sensitivity requirements

D. A. Kann, N. E. White, G. Ghirlanda +58

Gamma-ray bursts (GRBs) are ideal probes of the Universe at high redshift (z > 5), pinpointing the locations of the earliest star-forming galaxies and providing bright backlights t…

astro-ph.HE2024★ 60 cited

Acceleration and transport of relativistic electrons in the jets of the microquasar SS 433

F. Aharonian, F. Ait Benkhali, J. Aschersleben +161

SS 433 is a microquasar, a stellar binary system with collimated relativistic jets. We observed SS 433 in gamma rays using the High Energy Stereoscopic System (H.E.S.S.), finding a…

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★ 14 cited

Prospects for a survey of the Galactic plane with the Cherenkov Telescope Array

CTA Consortium

Approximately one hundred sources of very-high-energy (VHE) gamma rays are known in the Milky Way. A survey of the entire Galactic Plane in the energy range from a few tens of GeV…

astro-ph.HE2018★ 33 cited

H.E.S.S. discovery of very high energy gamma-ray emission from PKS 0625-354

H. E. S. S. Collaboration, H. Abdalla, A. Abramowski +253

PKS 0625-354 (z=0.055) was observed with the four H.E.S.S. telescopes in 2012 during 5.5 hours. The source was detected above an energy threshold of 200 GeV at a significance level…

astro-ph.HE2018★ 49 cited

A search for new supernova remnant shells in the Galactic plane with H.E.S.S

H. E. S. S. Collaboration, :, H. Abdalla +263

A search for new supernova remnants (SNRs) has been conducted using TeV gamma-ray data from the H.E.S.S. Galactic plane survey. As an identification criterion, shell morphologies t…

astro-ph.HE2016★ 50 cited

Characterizing the gamma-ray long-term variability of PKS 2155-304 with H.E.S.S. and Fermi-LAT

H. E. S. S. Collaboration, H. Abdalla, A. Abramowski +244

Studying the temporal variability of BL Lac objects at the highest energies provides unique insights into the extreme physical processes occurring in relativistic jets and in the v…

astro-ph.HE2016★ 20 cited

Extended VHE gamma-ray emission towards SGR1806-20, LBV1806-20, and stellar cluster Cl*1806-20

H. Abdalla, A. Abramowski, F. Aharonian +241

Using the High Energy Spectroscopic System (H.E.S.S.) telescopes we have discovered a steady and extended very high-energy (VHE) gamma-ray source towards the luminous blue variable…

astro-ph.HE2014★ 31 cited

Long-term monitoring of PKS 2155304 with ATOM and H.E.S.S.: investigation of optical/-ray correlations in different spectral states

A. Abramowski, F. Aharonian, F. Ait Benkhali +225

In this paper we report on the analysis of all the available optical and very high-energy -ray (200 GeV) data for the BL Lac object PKS 2155304, collected simultaneously w…

astro-ph.HE2012★ 25 cited

H.E.S.S. observations of the Carina nebula and its enigmatic colliding wind binary Eta Carinae

HESS Collaboration, A. Abramowski, F. Acero +191

The massive binary system Eta Carinae and the surrounding HII complex, the Carina Nebula, are potential particle acceleration sites from which very-high-energy (VHE; E > 100 GeV) γ…

astro-ph.HE2010★ 78 cited

Revisiting the Westerlund 2 Field with the H.E.S.S. Telescope Array

The HESS Collaboration, A. Abramowski, F. Acero +194

Aims. Previous observations with the H.E.S.S. telescope array revealed the existence of extended very-high-energy (VHE; E>100 GeV) γ-ray emission, HESS J1023-575, coincident with t…