Научные результаты

Context : Understanding the mechanisms that launch and shape powerful relativistic jets from supermassive black holes (SMBHs) in high-redshift active galactic nuclei (AGN) is crucial for probing the co-evolution of SMBHs and galaxies over cosmic time. Читать далее →

The blazar Ton 599 showed the strongest radio flares in its history almost a year ago, in February 2023 (#ATels 15872, 15873, 15894).  Читать далее →

We present the results of our observations using the Giant Meterwave Radio Telescope (GMRT) to investigate the radio continuum and OH line emission of 10 OHM candidates from the Arecibo Legacy Fast ALFA (ALFALFA) survey.  Читать далее →

Получен Евразийский патент на изобретение Способ формирования каталога измерений параметров радиоизлучения блазаров. Читать далее →

Получен патент на изобретение Способ измерений параметров радиоизлучения блазаров для формирования их каталога. Читать далее →

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Numerical simulations of a propagating slow magnetoacoustic wave guided by a field-aligned low-β plasma nonuniformity are performed in terms of ideal magnetohydrodynamics, aiming at modeling propagating extreme ultraviolet (EUV) emission disturbances observed in the solar corona. Читать далее →

We present an optical-to-radio study of the BL Lac object S4 0954+658 observations during 1998-2023. Читать далее →

This article presents the results of evaluating the possibility of conducting radio astronomy studies in the windows of atmospheric transparency ~100, ~230, and ~350 GHz using the optical Big Telescope Alt-Azimuthal (BTA) of the Special Astrophysical Observatory of the Russian Academy of Sciences (SAO RAS). Читать далее →

We present the results of our study of cross-correlations between long-term multi-band observations of the radio variability of the blazar 3C 279.  Читать далее →

We have received a new physical characteristics fitting based on actual observational data from the Swift mission's long-duration gamma-ray bursts (LGRBs).  Читать далее →

The development of methods for the radio frequency interference mitigation becomes a fundamental challenge for any radio astronomy research.  Читать далее →

In this paper, the first in a series of four articles, the scientific goals of the Metron project are highlighted, and the characteristics of the cosmic objects available for study within its framework are provided.  Читать далее →

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The existence of high-energy astrophysical neutrinos has been unambiguously demonstrated, but their sources remain elusive. IceCube reported an association of a 290-TeV neutrino with a gamma-ray flare of TXS 0506+056, an active galactic nucleus with a compact radio jet pointing to us. Читать далее →

We have almost daily observed the black hole candidate X-ray binary Swift J1727.8-1613 on 14-30 September 2023 with the ''Southern Sector and Flat mirror'' antenna and later from 1 October 2003 with the ''Northern Sector'' antenna of the RATAN-600 radio telescope (SAO RAS) using the similar radiometers at 4.7, 8.2, 11.2 and 22.3 GHz, but also we have 2.3 GHz radiometer at the second antenna. Читать далее →

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An important and interesting issue is brought to notice in the standard linear theory of the magnetoacoustic waves in the homogeneous magnetic flux tubes with an abrupt magnetic boundary, which are representative of the coronal, chromospheric, and photospheric loops of the solar atmosphere. Читать далее →

Earlier, we showed that according to the nature of the location of sources of preflare X-ray pulsations relative to the main solar flare, events are divided into at least two types: in type I events, the sources of pulsations and the main flare are in the same active region (AR) and in type II events they are in different regions. Читать далее →

We have detected beginning of a bright flare from the microquasar GRS1915+105 in the daily monitoring of microquasars with the RATAN-600 radio telescope. Читать далее →