activity
19952026
most citedAcceleration of petaelectronvolt protons in the Galactic Centre

512 citations · 4.1k across the 113 of their papers we have counts for

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Showing 2025 · astro-ph.HEShow all

11 papers · 2 filters

astro-ph.HE2025★ 1 cited

Prompt Searches for Very-High-Energy γ-Ray Counterparts to IceCube Astrophysical Neutrino Alerts

J. Abhir, A. Biland, K. Brand +817

The search for sources of high-energy astrophysical neutrinos can be significantly advanced through a multi-messenger approach, which seeks to detect the gamma rays that accompany…

astro-ph.HE2025★ 2 cited

Modeling Particle Acceleration and MWL Emission of a PeVatron Microquasar V4641 Sgr

Anton Dmytriiev, Frans van der Merwe, Markus Böttcher

The Large High Altitude Air Shower Observatory (LHAASO) has recently reported five Galactic microquasars as Ultra-High-Energy (UHE) -ray emitters (> 100 TeV). Among these source…

astro-ph.HE2025

Compton-induced -ray Cascade Emissions in Radio Galaxy NGC 1275

Mfuphi Ntshatsha, Markus Böttcher, Soebur Razzaque

Among active galactic nuclei (AGNi), blazars are the brightest emitters of high-energy (HE, MeV) to very-high-energy (VHE, GeV) -rays from their jets.…

astro-ph.HE2025

Constraining the nature of the most extreme Galactic particle accelerator. H.E.S.S. observations of the microquasar V4641 Sgr

A. Acharyya, F. Aharonian, H. Ashkar +131

Microquasars have emerged as promising candidates to explain the cosmic-ray flux at petaelectronvolt energies. LHAASO observations revealed V4641~Sgr as the most extreme example so…

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.HE2025

The Detection of Teraelectronvolt Radiation from a Flat Spectrum Radio Quasar

Vaidehi S. Paliya, Markus Bottcher, Kiran Wani +5

The very high-energy (VHE; 100 GeV) radiation carries the signatures of the matter-energy interaction in some of the most extreme astrophysical environments. Considering broad e…