43 citations · 84 across the 9 of their papers we have counts for
9 papers
The Peekaboo galaxy: new SALT spectroscopy and implications of archive HST data
Alexei Kniazev, Simon Pustilnik
The dwarf galaxy Peekaboo was recently identified as a Local Volume (LV) gas-rich and 'eXtremely Metal-Poor' (XMP) dIrr. Its gas metallicity is Z~Zsun/50, with +/-1 uncertainty…
A Two-Week Monitoring Campaign on Mrk 421
W. Peter Maksym, Ioannis Liodakis, M. Lynne Saade +153
X-ray polarization is a unique new probe of the particle acceleration in astrophysical jets made possible through the Imaging X-ray Polarimetry Explorer. Here we report on the firs…
Discovery of the most X-ray luminous quasar SRGE J170245.3+130104 at redshift z
G. A. Khorunzhev, A. V. Meshcheryakov, P. S. Medvedev +10
SRGE J170245.3+130104 was discovered by the eROSITA telescope aboard the SRG space observatory on March 13-15, 2020 during the first half-year scan of its all-sky X-ray survey. The…
Flux-density measurements of the high-redshift blazar PSO J047.4478+27.2992 at 4.7 and 8.2 GHz with RATAN-600
T. Mufakharov, A. Mikhailov, Yu. Sotnikova +5
We report the first detection at 4.7 and 8.2 GHz with the RATAN-600 radio telescope of the source PSO J047.4478+27.2992, which has been announced as a blazar at z=6.1. The average…
Polar rings dynamics in the triaxial dark matter halo
S. A. Khoperskov, A. V. Moiseev, A. V. Khoperskov
Spectroscopic observations at the Russian 6-m telescope are used to study the two polar ring galaxies (PRGs) from the catalogue by Moiseev et al.: SPRC-7 and SPRC-260. We have anal…
Stellar populations and galaxy evolution in the NGC 80 group
Olga K. Silchenko, Victor L. Afanasiev
We have studied the central parts of seven early-type galaxies -- the members of the X-ray-bright galaxy group NGC 80 -- by means of integral-field spectroscopy at the Russian 6m t…