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88 papers
Study of Massive OBA Stars with X-ray Emission
E. A. Nikolaeva, I. F. Bikmaev, E. N. Irtuganov +3
A study of the physical parameters of a sample of 15 OBA-type stars with detected X-ray emission from the Spektr-RG/eROSITA telescope is presented. While X-ray emission from cool s…
Southern eROSITA bubble as a forward shock and the low-metallicity CGM. South-east side story
E. Churazov, I. I. Khabibullin, A. M. Bykov +4
Unlike the complicated X-ray and radio structure observed in the North Polar Spur area, the South-Eastern part of the eROSITA bubbles can be reasonably well described as a propagat…
X-ray investigation of the remarkable galaxy group Nest200047
Anwesh Majumder, A. Simionescu, T. Plšek +11
Galaxy groups are more susceptible to feedback from the central active galactic nuclei (AGN) due to their lower gravitational binding energy compared to clusters. This makes them i…
Disentangling the Galactic centre X-ray reflection signal using XMM-Newton data
K. Anastasopoulou, I. Khabibullin, E. Churazov +5
We investigate the X-ray emission from the Galactic Centre (GC) region, focusing on the 6.4 keV fluorescent line of neutral or weakly ionised iron, which is commonly attributed to…
850 SRG/eROSITA X-ray sources associated with Pleiades stars
I. M. Khamitov, I. F. Bikmaev, M. R. Gilfanov +2
Using data from the SRG/eROSITA all-sky X-ray survey and the GAIA-based catalog of 2,209 members of the Pleiades open star cluster, we found 850 X-ray sources associated with the c…
New Active Galactic Nuclei Detected by the ART-XC and eROSITA Telescopes during the First Five SRG All-Sky X-ray Surveys. Part 2
Grigory Uskov, Sergey Sazonov, Igor Zaznobin +8
We present the results of our identification of 11 X-ray sources detected on the half of the sky in the 4-12 keV energy band on the combined map of the first…