Научные результаты

The Square Kilometre Array (SKA) is the largest radio interferometer under construction in the world. The high accuracy, wide-field, and large size imaging significantly challenge the construction of the Science Data Processor (SDP) of SKA.  Читать далее →

We present an analysis of the X-ray data obtained in the period of flaring activity of SS 433 in July and August 2018, during which the brightest radio flares over the entire history of its observations were detected at frequencies 2-5 GHz based on data from the RATAN-600 radio telescope. Читать далее →

We investigate the statistical properties of radio sources from the WENSS catalog, in the direction to which the Sunyaev-Zeldovich (SZ) effect is detected in the multifrequency microwave maps of the Planck space mission.  Читать далее →

The Hubble diagram (HD) is a plot that contains a luminous distance modulus presented with respect to the redshift.  Читать далее →

The observed characteristics of the spectral and photometric variability of SS 433 are discussed based on the data for 2018-2021 and compared with earlier results.  Читать далее →

The arrival direction of the recently detected high-energy (~604 TeV) neutrino, IceCube GOLD alert 220425A (GCN #31944), coincides with the blazar TXS 1749-101. This blazar was previously selected as an association for another high-energy neutrino event, IceCube EHE alert 181023A (GCN #23375), by Plavin et al. (2020).  Читать далее →

The study of the relationship of positive fluctuations on Planck frequency maps with the nearest radio sources of the RCR catalog (RATAN Cold Refined) was continued. Читать далее →

Based on the two epochs EVN archive data from OH line observations of IIZw 096, we confirm that the high-resolution OH emission in this source mainly comes from two spots (OH1 and OH2) of comp D1 of this merging system. We found no significant variations in the OH line emission. Читать далее →

The recent BRONZE neutrino alert IceCube-220225, GCN #31650, with an energy of 154 TeV is suggested to be associated with the radio-bright blazar PKS 0215+015 following the predictions of Plavin et al. (2020) analysis.  Читать далее →

The recent GOLD neutrino alert IceCube-220205, GCN #31554, with an energy above 200 TeV is suggested to be associated with the blazar PKS 1741-03.  Читать далее →

Quasiperiodic pulsations (QPPs) are frequently observed in the entire range of the electromagnetic spectrum during solar flares, and there can be many possible mechanisms leading to this phenomenon. In the present work, we demonstrate the possibility of the generation of QPPs by a nonlinear fast sausage mode in a coronal loop.  Читать далее →

We present a study of the radio continuum properties of two luminous/ultraluminous infrared galaxy samples: the OH megamaser (OHM) sample (74 objects) and the control sample (128 objects) without detected maser emission.  Читать далее →

During the long-term multi-frequency monitoring of the Galactic microquasars with the RATAN-600 radio telescope we have detected the giant flare at 1.2-30 GHz from the microquasar Cygnus X-3 on 31 August 2021 (ATel #14281). Читать далее →

We present the results of our study of the relationship between Fanaroff-Riley type 0 (FR0) radio galaxies and gigahertz-peaked spectrum (GPS) sources. Читать далее →

We report the radio continuum properties for several samples of peaked spectrum (PS) radio sources. Читать далее →

We present the radio properties of optically selected quasars with z ≥ 3. The complete sample consists of 102 quasars with a flux density level S1.4 ≥ 100 mJy in a declination range -35° ≤ Dec. ≤ +49°. Читать далее →

We present Low-Frequency Array (LOFAR) 143.5-MHz radio observations of flaring activity during 2019 May from the X-ray binary Cygnus X-3. Similar to radio observations of previous outbursts from Cygnus X-3, we find that this source was significantly variable at low frequencies, reaching a maximum flux density of about 5.8 Jy. Читать далее →

The paper discusses the diagnostics of plasma jets in the solar corona with the use of data from modern space- and ground-based telescopes observing the Sun in the extreme ultraviolet (EUV) and micro- wave bands. Читать далее →

In this paper, we consider the spectral dependences of transverse electromagnetic waves generated in solar plasma at the coalescence of Langmuir waves.  Читать далее →

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.  Читать далее →

Recent studies have shown that among the population of radio-loud active galactic nuclei in the local U-niverse, they numerically dominate compact radio sources of the FR0 class. Читать далее →