HA
H. Ashkar
astro-ph.HEastro-ph.IMastro-ph.GAhep-phastro-ph.COhep-ex
On Valency
published · living versionsW_32e8cec4·v1 · currentpublished
A very-high-energy component deep in the Gamma-ray Burst afterglow
with H. Abdalla R. Adam F. Aharonian F. Ait Benkhali E. O. Anguener M. Arakawa, C. Arcaro, C. Armand, M. Backes +217
1 version
Preprints & journals
85 papers in the corpus · 2018–2026Search for Gamma-Ray Spectral Lines from Dark Matter Annihilation with the H.E.S.S. Inner Galaxy Survey.42726958 · Aharonian, F, Ashkar, H, Barbosa Martins, V et al.2026 · 0 citationsPhysical review letters. 2026;137(9):091002
Evidence for a spectral steepening of the gamma-ray emission from the Galactic Center ridge2608.25946v1 · A. Acharyya, F. Aharonian, H. Ashkar et al.2026 · 0 citationsarXiv
Broadband multiwavelength properties of the archetypal blazar 3C 279 during the 2017 Event Horizon Telescope campaign2606.25868v2 · G. Principe, J. C. Algaba, E. Aviano et al.2026 · 0 citationsA&A, 712, A224 (2026)
Chasing Gamma-Ray Signals from Binary Neutron Star Coalescences with the Cherenkov Telescope Array: Prospects and Observing Strategies2604.08748v1 · S. Abe, J. Abhir, A. Abhishek et al.2026 · 0 citationsarXiv
The second H.E.S.S. gamma-ray burst catalogue: 15 years of observations with the H.E.S.S. telescopes2603.21741v1 · A. Acharyya, F. Aharonian, C. Arcaro et al.2026 · 1 citationA&A, 707, A382 (2026)
H.E.S.S. observations of composite Seyfert-starburst galaxies2603.21912v1 · A. Acharyya, F. Aharonian, H. Ashkar et al.2026 · 0 citationsarXiv
Scrutinizing the 2020 multiwavelength outburst of PKS 0903-57 through observations with H.E.S.S2603.12855v1 · A. Acharyya, F. Aharonian, F. Ait Benkhali et al.2026 · 0 citationsarXiv
H.E.S.S. detection of the PSR J0855-4644 nebula2602.14640v1 · F. Aharonian, H. Ashkar, M. Backes et al.2026 · 1 citationarXiv
A MeerKAT search for persistent radio sources towards twenty-five localised Fast Radio Bursts2602.07716v1 · Lebogang L. Mfulwane, James O. Chibueze, Thulo P. Letsele et al.2026 · 0 citationsarXiv
tilepy: A Flexible Open-Source Scheduling Engine for Time-Domain and Multi-Messenger Astronomy2601.18668v1 · Fabian Schussler, H. Ashkar, W. Kiendr'eb'eogo et al.2026 · 0 citationsarXiv
Prompt Searches for Very-High-Energy {\gamma}-Ray Counterparts to IceCube Astrophysical Neutrino Alerts2512.16562v1 · J. Abhir, A. Biland, K. Brand et al.2025 · 1 citationarXiv
Constraining the nature of the most extreme Galactic particle accelerator. H.E.S.S. observations of the microquasar V4641 Sgr2511.10537v1 · A. Acharyya, F. Aharonian, H. Ashkar et al.2025 · 1 citationarXiv
The H.E.S.S. Gravitational Wave and Gamma-Ray Burst Follow-Up Programs2510.02687v1 · Bernardo Cornejo, Halim Ashkar, Matteo Cerruti et al.2025 · 0 citationsPoS(ICRC2025)615
Revisiting Two Decades of GRB Observations: Assessing Missed Very High-Energy Detections and Future Prospects2508.07821v1 · Halim Ashkar, Stephen Fegan, Aur'elie Sangar'e2025 · 0 citationsarXiv
tilepy: Smart Scheduling for Multi-Messenger Astronomy from Earth to Orbit2508.07824v1 · Halim Ashkar, Monica Seglar-Arroyo, Fabian Schussler et al.2025 · 0 citationsarXiv
H.E.S.S. programme searching for VHE gamma rays associated with FRBs2507.02143v1 · F. Aharonian, A. Archaryya, J. Aschersleben et al.2025 · 1 citationJournal of Cosmology and Astroparticle Physics, Volume 2025, July 2025
The H.E.S.S. extragalactic sky survey with the first decade of observations2504.21221v1 · H.E.S.S. Collaboration, F. Aharonian, F. Ait Benkhali et al.2025 · 3 citationsA&A, 695, A261 (2025)
Detection of very-high-energy gamma-ray emission from Eta Carinae during its 2020 periastron passage2501.12238v1 · H.E.S.S. Collaboration, F. Aharonian, F. Ait Benkhali et al.2025 · 3 citationsA&A 694, A328 (2025)
High-Statistics Measurement of the Cosmic-Ray Electron Spectrum with H.E.S.S.39672149 · Aharonian, F, Benkhali, F Ait, Aschersleben, J et al.2024 · 19 citationsPhysical review letters. 2024;133(22):221001
Cross-Observatory Coordination with tilepy: A Novel Tool for Observations of Multi-Messenger Transient Events2407.18076v2 · Monica Seglar-Arroyo, Halim Ashkar, Mathieu de Bony de Lavergne et al.2024 · 4 citationsThe Astrophysical Journal Supplement Series, Volume 274 Number 1 (11pp), 2024 September
Very-high-energy -ray emission from young massive star clusters in the Large Magellanic Cloud2407.16219v1 · F. Aharonian, F. Ait Benkhali, J. Aschersleben et al.2024 · 13 citationsAstrophysical Journal Letters 970, L21 (2024)
H.E.S.S. observations of the 2021 periastron passage of PSR B1259-63/LS 28832406.18167v1 · H.E.S.S. Collaboration, F. Aharonian, F. Ait Benkhali et al.2024 · 8 citationsarXiv
Broadband Multi-wavelength Properties of M87 during the 2018 EHT Campaign including a Very High Energy Flaring Episode2404.17623v3 · J. C. Algaba, M. Balokovic, S. Chandra et al.2024 · 35 citationsA&A 692, A140 (2024)
Unveiling extended gamma-ray emission around HESS J1813-1782403.16802v1 · F. Aharonian, F. Ait Benkhali, J. Aschersleben et al.2024 · 0 citationsA&A 686, A149 (2024)
Spectrum and extension of the inverse-Compton emission of the Crab Nebula from a combined Fermi-LAT and H.E.S.S. analysis2403.12608v2 · F. Aharonian, F. Ait Benkhali, J. Aschersleben et al.2024 · 26 citationsA&A 686, A308 (2024)
Dark Matter Line Searches with the Cherenkov Telescope Array2403.04857v2 · S. Abe, J. Abhir, A. Abhishek et al.2024 · 19 citationsJCAP 07 (2024) 047
Curvature in the very-high energy gamma-ray spectrum of M872402.13330v3 · H.E.S.S. Collaboration, F. Aharonian, F. Ait Benkhali et al.2024 · 15 citationsA&A, 685, A96 (2024)
The case of the missing VHE GRBs: A retrospective study of Swift gamma-ray bursts with Imaging Atmospheric Cherenkov Telescopes2402.01421v1 · Halim Ashkar, Aur'elie Sangar'e, Stephen Fegan et al.2024 · 0 citationsarXiv
Acceleration and transport of relativistic electrons in the jets of the microquasar SS 433.38271522 · H.E.S.S. Collaboration*†, Aharonian, F, Benkhali, F Ait et al.2024 · 62 citationsScience (New York, N.Y.). 2024;383(6681):402-406
TeV flaring activity of the AGN PKS 0625-354 in November 20182401.07071v1 · H.E.S.S. Collaboration, F. Aharonian, F. Ait Benkhali et al.2024 · 3 citationsarXiv
Follow-up of gravitational waves alerts with IACTs using Astro-COLIBRI2312.08802v1 · Mathieu de Bony de Lavergne, Halim Ashkar, Atilla Kaan Alkan et al.2023 · 0 citationsarXiv
Chasing Gravitational Waves with the Cherenkov Telescope Array2310.07413v3 · Jarred Gershon Green, Alessandro Carosi, Lara Nava et al.2023 · 1 citationarXiv
Discovery of a Radiation Component from the Vela Pulsar Reaching 20 Teraelectronvolts2310.06181v1 · The H.E.S.S. Collaboration: F. Aharonian, F. Ait Benkhali, J. Aschersleben et al.2023 · 29 citationsarXiv
, the scientific software for the Cherenkov Telescope Array -- NectarCAM2309.12438v1 · Guillaume Grolleron, Halim Ashkar, Francois Brun et al.2023 · 1 citationarXiv
Prospects for -ray observations of the Perseus galaxy cluster with the Cherenkov Telescope Array2309.03712v1 · S. Abe, F. Acero, A. Acharyya et al.2023 · 11 citationsJCAP10(2024)004
Probing VHE gamma-ray emission from GW events with H.E.S.S2309.03715v1 · Halim Ashkar, Mathieu de Bony de Lavergne, Francois Brun et al.2023 · 0 citationsarXiv
All sky archival search for FRB high energy counterparts with Swift and Fermi2309.02883v1 · Halim Ashkar, Mehdi El Bouhaddouti, Stephen Fegan et al.2023 · 2 citationsarXiv
tilepy: rapid tiling strategies in mid/small FoV observatories2309.01436v1 · Fabian Schussler, Halim Ashkar, Mathieu de Bony de Lavergne et al.2023 · 2 citationsarXiv
H.E.S.S. realtime follow-ups of IceCube high-energy neutrino alerts2308.16699v1 · Federica Bradascio, Halim Ashkar, Jowita Borowska et al.2023 · 1 citationarXiv
The vanishing of the primary emission region in PKS 1510-0892307.01692v1 · F. Aharonian, F. Ait Benkhali, J. Aschersleben et al.2023 · 23 citationsarXiv
Detection of extended gamma-ray emission around the Geminga pulsar with H.E.S.S2304.02631v1 · H.E.S.S. Collaboration: F. Aharonian, F. Ait Benkhali, J. Aschersleben et al.2023 · 29 citationsA&A 673, A148 (2023)
H.E.S.S. follow-up observations of GRB221009A2303.10558v1 · H.E.S.S. Collaboration: F. Aharonian, F. Ait Benkhali, J. Aschersleben et al.2023 · 26 citationsarXiv
HESS J1809$-$193: a halo of escaped electrons around a pulsar wind nebula?2302.13663v1 · H.E.S.S. Collaboration: F. Aharonian, F. Ait Benkhali, J. Aschersleben et al.2023 · 23 citationsA&A 672, A103 (2023)
Gamma-ray observations of MAXI J1820+070 during the 2018 outburst2209.09785v2 · H. Abe, S. Abe, V. A. Acciari et al.2022 · 12 citationsarXiv
Search for Dark Matter Annihilation Signals in the H.E.S.S. Inner Galaxy Survey.36154418 · Abdalla, H, Aharonian, F, Benkhali, F Ait et al.2022 · 91 citationsPhysical review letters. 2022;129(11):111101
A deep spectromorphological study of the -ray emission surrounding the young massive stellar cluster Westerlund 12207.10921v2 · F. Aharonian, H. Ashkar, M. Backes et al.2022 · 51 citationsA&A 666, A124 (2022)
The H.E.S.S. transients follow-up system2203.05458v2 · C. Hoischen, M. Fu\ssling, S. Ohm et al.2022 · 15 citationsA&A 666, A119 (2022)
Time-resolved hadronic particle acceleration in the recurrent nova RS Ophiuchi.35271303 · H.E.S.S. Collaboration*†, Aharonian, F, Ait Benkhali, F et al.2022 · 92 citationsScience (New York, N.Y.). 2022;376(6588):77-80
Evidence for gamma-ray emission from the remnant of Kepler's supernova based on deep H.E.S.S. observations2201.05839v3 · H.E.S.S. Collaboration, F. Aharonian, F. Ait Benkhali et al.2022 · 9 citationsA&A 662, A65 (2022)
A MeerKAT, e-MERLIN, H.E.S.S. and Swift search for persistent and transient emission associated with three localised FRBs2201.00069v1 · James O. Chibueze, M. Caleb, L. Spitler et al.2021 · 13 citationsarXiv
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