224 citations · 804 across the 61 of their papers we have counts for
11 papers · 1 filter
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…
Multiwavelength quasi-periodic variability of the blazar Ton 599
Yu. V. Sotnikova, T. V. Mufakharov, A. E. Volvach +34
During the last 40-50 years, the TeV blazar Ton 599 has systematically experienced major outbursts detected in a wide wavelength range from radio to -rays. In this work, we pres…
Type IIP SN 2024bch: Hydrodynamic model, shock breakout, and circumstellar interaction
V. P. Utrobin, N. N. Chugai
The well-observed type IIP SN 2024bch with the short plateau is shown to be an outcome of the red supergiant explosion with the presupernova mass of 14-15 Msun, the explosion energ…
Double white dwarf ZTF J0538+1953 as the brightest verification binary for space laser interferometers
Serguey Antipin, Alexander Belinski, Leonid Berdnikov +4
A decrease in the orbital period of the ultrashort-period binary white dwarf \ZTF, which is one of the Galactic verification binaries in the millihertz frequency range for planned…
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…
Uncommon SN 2020jfo: Ordinary explosion of 8 Msun red supergiant with dense wind
V. P. Utrobin, N. N. Chugai
We present the hydrodynamic model of Type IIP SN 2020jfo with the unusually short (nearly 60 days) light curve plateau. The model suggests the explosion of about 8 Msun red supergi…
Study of the X-ray Pulsar XTE J1946+274 with NuSTAR
A. S. Gorban, S. V. Molkov, S. S. Tsygankov +1
We present the results of our spectral and timing analysis of the emission from the transient X-ray pulsar XTE J1946+274 based on the simultaneous NuSTAR and Swift/XRT observations…
Phase-Resolved Spectroscopy of the Magnetar SGR J1745-2900 Based on Data from the NuSTAR Observatory
E. A. Kuznetsova, A. A. Lutovinov, A. N. Semena
The magnetar SGR J1745-2900 located in the vicinity of the supermassive black hole Sgr A was detected during its X-ray outburst with the Swifht/XRT telescope in April 201…
Radius of the neutron star magnetosphere during disk accretion
E. V. Filippova, I. A. Mereminskiy, A. A. Lutovinov +2
The dependence of the spin frequency derivative of accreting neutron stars with a strong magnetic field (X-ray pulsars) on the mass accretion rate (bolometric luminosity, $…
Determining the Nature of Faint X-Ray Sources from the ASCA Galactic Center Survey
A. A. Lutovinov, M. G. Revnivtsev, D. I. Karasev +6
We present the results of the identification of six objects from the ASCA Galactic center and Galactic plane surveys: AXJ173548-3207, AXJ173628-3141, AXJ1739.5-2910, AXJ1740.4-2856…
The image jets modeling of gravitationally lensed sources
T. Larchenkova, A. Lutovinov, N. Lyskova
The jets image modelling of gravitationally lensed sources have been performed. Several basic models of the lens mass distribution were considered, in particular, a singular isothe…