X-ray Variability of Quasars Based On SRG/eROSITA All-Sky Survey Data from 2-year sky survey by SRG/eROSITA were used to study X-ray variability of thousands of SDSS quasars. X-ray variability appeared to be linked with some physical parameters of supermassive black holes, such as theirs masses and accretion rates.
High Energy Astrophysics Today And Tomorrow 2023 Annual all-Russian conference "High Energy Astrophyiscs Today And Tomorrow 2023", aka HEA–2023, starts on Monday, December 18 at IKI.
Six and a half Crab, or Thirty And Three Million Photons Mikhail Pavlinsky ART-XC X-Ray telescope and Integral observatory look at Swift J1727.8-1613 X-Ray nova – the brightest object in the summer X-ray sky of 2023.
Portrait Of a Mean Galaxy Cluster in X-Rays Using SRG/eROSITA X-ray data, researchers studied the properties of hot gas in galaxy clusters at large distances from their centers. The results of the study are published in MNRAS and are available on arXiv.org.
Mikhail Pavlinsky ART-XC X-ray Telescope Helps to Reveal the Origin of High-Energy Radiation Astrophysicists from IKI and Ioffe Institute of the Russian Academy of Sciences studied compact star cluster Westerlund 2. The paper with the results of the study is accepted for publication in MNRAS and is available on arXiv.org.
IXPE Finds Polarization of the X-ray Emission From Molecular Clouds in the Milky Way's Centre This finding confirms the hypothesis that the supermassive black hole in the center of our Galaxy once had been much more active that it is now. The results are published in the Nature journal.
Transient X-ray Pulsar RX J0440.9+4431 Switched To the Super-Critical Regime of Accretion For the First Time... …and went back again. Literally all X-ray space observatories studied this outburst in 2023, and among them was Integral. The paper with the first results of the observations was sent to MNRAS and published on arXiv.org. The picture from the paper was selected as the June 2023 Picture of the Month of the Integral observatory.
Bright, Energetic, and Puzzling Russian Mikhail Pavlinsky ART-XC X-ray telescope onboard Spektr-RG observatory (Roscosmos) and Russian KONUS instrument onboard WIND spacecraft (NASA), residing in two opposite Lagrange points L1 and L2, have provided a detailed study of GRB 221009A — the brightest of all gamma-ray bursts previously registered by Konus and most likely the brightest one in the whole history of mankind.