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A Population View of the Cosmic-Ray Knee: The Role of Variance in Supernova Maximum Rigidities
Carmelo Evoli
The broad shape of the Galactic cosmic-ray knee challenges source models in which all supernova remnants share a nearly universal, sharp maximum rigidity. We investigate whether th…
Constraints on the VHE counterpart of two binary black hole mergers observed by the MAGIC and CTAO LST-1 telescopes
K. Abe, S. Abe, J. Abhir +358
We present very-high-energy gamma-ray observations of two binary black hole merger candidates, GW240615_113620 and GW241125_010116, performed with the Major Atmospheric Gamma Imagi…
Radio Follow Up of a Sub-threshold GRB in the Sky Localization Area of GW241125
Natalie Gottschlich, Alessandra Corsi, S. Bradley Cenko +5
Since the Fermi satellite's identification of a candidate -ray burst (GRB) temporally coincident with GW150914, several tentative, and often debated, associations between electr…
Suppressed diffusion and gamma-ray emission from the Cygnus bubble
Ben Li, Pasquale Blasi, Elena Amato
Recent gamma-ray observations indicate that star clusters can be efficient particle accelerators. In particular, LHAASO has detected diffuse gamma-ray emission from Cygnus OB2 exte…
Acoustic instability at shock-wave precursors
Antonio Capanema, Pasquale Blasi, Emanuele Sobacchi
Magnetic field amplification is an integral part of the process of particle acceleration at non-relativistic shocks. It is necessary to reach the maximum energies required by obser…
Thermal Electrons in an Ultra-Relativistic Shock Shape the Optical Afterglow of GRB 250702F
Martin Jelínek, Annarita Ierardi, Filip Novotný +8
Observing early optical emission from gamma-ray bursts (GRBs) contemporaneous with the MeV prompt emission phase remains rare, requiring rapid-response robotic facilities. The Ondř…