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The Galactic low-mass X-ray binary GS 2023+338 was discovered during the burst on May 22, 1989 with the Japanise satellite Ginga (aka Galaxy). The flux reached 17 crabs (this unit of flux measurement is an bright X-ray source, Crab Nebula) at 10-35 keV. More...

Variability of emission at scales from fractions of a second to tens of years is one of characteristic properties of different celestial objects. Transient events are also the emission variability though not regularly observed. Such events are difficult to detect for that reason. During the analysis of the surveys carried out on RATAN-600, it was found that almost one fifth of the detected sources shows significant radio flux variations. We discovered three radio transients in our search. More...

Currently, there is very little information on comets which are active beyond the orbit of Jupiter. Dust tails and comas of such comets are observed at large distances from the Sun (greater than 5 au), where water ice sublimation is inconsiderable. More...

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Update

Telescopes:
08.12.15 A new schedule of the BTA observations (the first half of 2016)
28.12.15 A new schedule of the RATAN-600 observations (the first half of 2016)
28.12.15 A new schedule of the Zeiss-1000 observations (the first half of 2016)
17.11.15 The half-yearly BTA observation reports
The half-yearly RATAN-600 observation reports
Science:
28.12.15 SAO Report 2014
24.11.15 Proposed Scientific Achievements 2015
Publications:
11.11.15 Astrophysical Bulletin, vol. 70, number 4 is published.
(Russian version)
Service:
09.02.16 Announce, news, discussion (restricted)
BTA-6m


RATAN-600
Radio telescope


Zeiss-1000


Sun monitoring




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Last update: 01/02/2016