7 papers
Search for a photon peak from keV-scale dark matter annihilation with NuSTAR: Constraints on after 11 years of observations
E. I. Zakharov, V. V. Barinov, D. S. Gorbunov +2
We report new constraints on the velocity-independent annihilation cross section of keV-scale dark matter particles based on 11 years of observations with the…
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…
SRG/ART-XC All-Sky X-ray Survey: Sensitivity Assessment Based on Aperture Photometry
N. Y. Tyrin, R. A. Krivonos, V. A. Arefiev +10
The Spectrum-Roentgen-Gamma (SRG) observatory continues to operate successfully in orbit at the Lagrange point L2. The Mikhail Pavlinsky ART-XC telescope has demonstrated high effi…
Inflight calibration of SRG/ART-XC point spread function at large off-axis angles
R. Krivonos, R. Burenin, E. Filippova +12
The knowledge of the point spread function (PSF) of the Mikhail Pavlinsky Astronomical Roentgen Telescope - X-ray Concentrator (ART-XC) telescope aboard the Spectrum-Roentgen-Gamma…
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…
Strong limits on keV-scale galactic sterile neutrino dark matter with stray light from NuSTAR after 11 years of operation
R. A. Krivonos, V. V. Barinov, A. A. Mukhin +1
Using tremendous photon statistics gained with the stray light aperture of the NuSTAR telescope over 11 years of operation, we set strong limits on the emission of close to monochr…