activity
20062024
most citedOn possible interpretations of the high energy electron-positron spectrum measured by the Fermi Large Area Telescope

263 citations · 574 across the 18 of their papers we have counts for

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Showing astro-ph.HEShow all

13 papers · 1 filter

astro-ph.HE2024

Nonlinear feedback of the electrostatic instability on the blazar-induced pair beam and GeV cascade

Mahmoud Alawashra, Martin Pohl

Relativistic pair beams produced in the cosmic voids by TeV gamma rays from blazars are expected to produce a detectable GeV-scale cascade that is missing in the observations. The…

astro-ph.HE2023

Variability studies of active galactic nuclei from the long-term monitoring program with the Cherenkov Telescope Array

Guillaume Grolleron, Josefa Becerra González, Jonathan Biteau +13

Blazars are active galactic nuclei (AGN) with a relativistic jet oriented toward the observer. This jet is composed of accelerated particles which can display emission over the ent…

astro-ph.HE2023

Evolution of Relativistic Pair Beams: Implications for Laboratory and TeV Astrophysics

Marvin Beck, Oindrila Ghosh, Florian Grüner +5

Missing cascades from TeV blazar beams indicate that collective plasma effects may play a significant role in their energy loss. It is possible to mimic the evolution of such highl…

astro-ph.HE2022

Nonthermal Electron Acceleration at Collisionless Quasi-perpendicular Shocks

T. Amano, Y. Matsumoto, A. Bohdan +6

Shock waves propagating in collisionless heliospheric and astrophysical plasmas have been studied extensively over the decades. One prime motivation is to understand the nonthermal…

astro-ph.HE2022★ 16 cited

Modeling kilonova afterglows: Effects of the thermal electron population and interaction with GRB outflows

Vsevolod Nedora, Tim Dietrich, Masaru Shibata +2

Given an increasing number of gamma-ray bursts accompanied by potential kilonovae there is a growing importance to advance modelling of kilonova afterglows. In this work, we invest…

astro-ph.HE2022★ 23 cited

Spectral softening in core-collapse supernova remnant expanding inside wind-blown bubble

Samata Das, Robert Brose, Dominique M. -A. Meyer +3

Context. Galactic cosmic rays are widely assumed to arise from diffusive shock acceleration, specifically at shocks in supernova remnants (SNRs). These shocks expand in a complex e…