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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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Publications:
10.02.16 Astrophysical Bulletin, vol. 71, number 1 is published.
(Russian version)
Service:
12.02.16 Announce, news, discussion (restricted)
BTA-6m


RATAN-600
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Zeiss-1000


Sun monitoring




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Last update: 12/02/2016