activity
20112026
most citedTransient Double-beam Spectrograph for the 2.5-m Telescope of the Caucasus Mountain Observatory of SAI MSU

71 citations · 630 across the 52 of their papers we have counts for

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8 papers · 1 filter

astro-ph.HE2025

Lost and Found - A gallery of overlooked optical nuclear transients from the ZTF archive

E. Quintin, E. Russeil, M. Llamas Lanza +12

Tidal disruption events (TDEs) correspond to the destruction of a star by the tidal forces around a black hole, leading to outbursts which can last from months to years. These tran…

astro-ph.HE2023

Long-term multiwavelength monitoring and reverberation mapping of NGC 2617 during a changing-look event

V. L. Oknyansky, M. S. Brotherton, S. S. Tsygankov +32

We present the results of photometric and spectroscopic monitoring campaigns of the changing look AGN NGC~2617 carried out from 2016 until 2022 and covering the wavelength range fr…

astro-ph.HE2023★ 9 cited

Spectroscopic Searches for Evolutionary Orbital Period Changes in WR+OB Binaries: The case of CQ Cep and CX Cep

I. Shaposhnikov, A. Cherepashchuk, A. Dodin +1

We present the results of spectroscopic observations of two eclipsing WR+OB-type systems - CQ Cep and CX Cep, performed in 2020-2023 with a low-resolution slit spectrograph TDS ($λ…

astro-ph.HE2023★ 13 cited

Evolutionary Increase of the orbital Separation and Change of the Roche Lobe Size in SS433

Anatol Cherepashchuk, Alexander Belinski, Alexander Dodin +1

We present results of long-term photometric monitoring of SS433 which proves a secular evolutionary increase of the orbital period of SS433 at a rate of $(1.14\pm 0.25)\times 10^{-…

astro-ph.HE2021★ 4 cited

First tidal disruption events discovered by SRG/eROSITA: X-ray/optical properties and X-ray luminosity function at z<0.6

S. Sazonov, M. Gilfanov, P. Medvedev +22

We present the first sample of tidal disruption events (TDEs) discovered during the SRG all-sky survey. These 13 events were selected among X-ray transients detected in the 0<l<180…

astro-ph.HE2021★ 15 cited

Peculiar X-ray transient SRGA J043520.9+552226/AT2019wey discovered with SRG/ART-XC

I. A. Mereminskiy, A. V. Dodin, A. A. Lutovinov +24

Context: During the ongoing all-sky survey, the Mikhail Pavlinsky ART-XC telescope on board the SRG observatory should discover new X-ray sources, many of which can be transient. H…