2 papers
astro-ph.HE2026
Extreme Transients in Gamma Rays
Daniela Hadasch, Dmitriy Khangulyan
Extreme gamma-ray transients represent some of the most energetic and physically constraining phenomena in high-energy astrophysics. They are characterized by rapid, large-amplitud…
astro-ph.HE2026
Constraining the PeV gamma-ray emission zone of Cygnus X-3 with contemporaneous GeV timing and spectral observations
Xing-Fu Zhang, Ruo-Yu Liu, Dmitriy Khangulyan +2
Cygnus X-3 has recently been established as a variable ultra-high-energy(UHE) gamma-ray source with photons detected up to 3.7~PeV. The temporal correlation between its PeV activit…