I have a strong publication record, with 102 publications in high-impact journals including top-tier journals such as Nature and Science, an H-index of 19, and 1305 citations. Here are 20 of my most significant contributions - Full list

Selected Peer-Reviewed - Main Author

• 1. M. Seglar-Arroyo, H. Ashkar, et al (2024). Cross-Observatory Coordination with tilepy: A Novel Tool for Observations of Multi-Messenger Transient Events, ApJS, 274, 1 [link]




• 2. H. Ashkar, et al. (2023). The case of the missing VHE GRB: A retrospective study of Swift gamma-ray bursts with Imaging Atmospheric Cherenkov Telescopes, ApJ, 964, 57 [link]




• 3. H. Ashkar (H.E.S.S. collaboration, 2023). H.E.S.S. follow-up observations of GRB 221009A, ApJL, 946, L27. [link]




• 4. H. Ashkar (H.E.S.S. collaboration, 2021). H.E.S.S. follow-up of Binary Black Hole Coalescence events during the second and third Gravitational Waves observing runs of Advanced LIGO and Virgo, ApJ, 923, 109 [link]




• 5. H. Ashkar (H.E.S.S. collaboration, 2021). Searching for TeV gamma-ray emission from SGR1935+2153 during its 2020 X-ray and radio bursting phase, ApJ, 919, 106 [link]




• 6. H. Ashkar, et al. (2021). The H.E.S.S. Gravitational Wave Rapid Follow-up Program, JCAP, JCAP03(2021), 45. [link]




• 7. H. Ashkar (H.E.S.S. collaboration, 2019). Probing the magnetic field in the GW170817 outflow using H.E.S.S. observations, ApJL, 894, L16 [link]

Selected Peer-Reviewed - Main Author

• 8. H. Ashkar, et al. (2023). Probing VHE gamma-ray emission from GW events with H.E.S.S, ICRC2023 proceedings, Proceedings of Science, ICRC2023, 1452 [link]




• 9. H. Ashkar, et al. (2023). All-sky archival search for FRB high-energy counterparts with Swift and Fermi, ICRC2023 proceedings, Proceedings of Science, ICRC2023, 555 [link]




• 10. H. Ashkar, et al. (2022). Gravitational Waves follow-up in the very high energy domain with the High Energy Stereoscopic System, Proceedings of the 56th Rencontres de Moriond 2022 (VHEPU), 181 [link]




• 11. H. Ashkar, et al. (2021). H.E.S.S. follow-up of BBH merger events, Proceedings of Science, 395, 943 [link]




• 12. H. Ashkar, et al. (2021). The H.E.S.S. Gravitational Wave Rapid Follow-up Program during O2 and O3, Proceedings of Science, 395, 936 [link]




• 13. H. Ashkar, F. Schüssler, M. Seglar-Arroy (2019). Searches for TeV gamma-ray counterparts to gravitational wave events with H.E.S.S., Mem. R. Astron. Soc., 90, 49 [link]




• 14. H. Ashkar, The hunt for VHE gamma rays in the Gravitational Waves era, JRJC 2019, Book of Proceedings, hal-02971995v2, 11 [link]

More selected peer-reviewed publications

• 15. H.E.S.S. collaboration (2019), A very-high-energy component deep in the γ-ray burst afterglow, Nature, 575, 464 [link]
Contribution: Review of the H.E.S.S. main results and interpretation.



• 16. H.E.S.S. collaboration et al. (2021), Revealing X-ray and gamma-ray temporal and spectral similarities in the GRB190829A afterglow, Science, 372, 1081 [link]
Contribution: Participation in the MWL analysis and interpretation, mentioned in the acknowledgments



• 17. J. O. Chibueze, et al. (2022), A MeerKAT, e-MERLIN, H.E.S.S. and Swift search for persistent and transient emission associated with three localized FRBs, Monthly Notices of the Royal Astronomical Society, 515, 1365[link]
Contribution: Main H.E.S.S. author responsible for the H.E.S.S. VHE gamma-ray and Swift X-ray and UV analysis and interpretation



• 18. C. Hoischen, et al. (2022), The H.E.S.S. transient follow-up system, Astronomy & Astrophysics, 666, A119 [link]
Contribution: Implementation of the follow-up of poorly localized transients and FRBs in the H.E.S.S. Target of Opportunity alert system and main responsible for the system now



• 19. P. Reichherzer, et al. (2021), Astro-COLIBRI—The COincidence LIBrary for Real-time Inquiry for Multimessenger Astrophysics, The Astrophysical Journal Supplement Series, 256, 5 [link]
Contribution: Implementing the handling of poorly localized transients and contribution to the visibility plot module



• 20. F. Durret, et al. (2019), The link between brightest cluster galaxy properties and large-scale extensions of 38 DAFT/FADA and CLASH clusters in the redshift range 0.2 < z < 0.9, Astronomy & Astrophysics, 622, A78 [link]
Contribution: Creation of the density maps of the CLASH galaxy clusters