3 papers
astro-ph.HE2026
A broadband outburst of the compact steep-spectrum quasar 3C 138 in 2024-2026
T. V. Mufakharov, Yu. V. Sotnikova, V. V. Vlasyuk +20
After several decades of relative quiescence, the compact steep-spectrum quasar 3C 138 entered an active phase in 2024-2026, exhibiting strong broadband flaring. We investigate its…
astro-ph.HE2025
X-ray emission of the Nuclear Stellar Disk as seen by SRG/ART-XC
Valentin Nezabudkin, Roman Krivonos, Sergey Sazonov +5
The Nuclear Stellar Disk (NSD), together with the Nuclear Stellar Cluster and the supermassive black hole Sgr A*, forms the central region of the Milky Way. Galactic X-ray backgrou…
astro-ph.HE2025
SRG/ART-XC discovery of pulsations from RX J0535.0-6700: another X-ray pulsar in the LMC
I. A. Mereminskiy, A. S. Gorban, Yu. S. Klein +5
Using the Mikhail Pavlinsky ART-XC onboard the SRG observatory we have detected, for the first time, X-ray pulsations with a period of ~106 s from the poorly-studied high-mass X-ra…