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: http://www.sao.ru/cats/~satr/XB/CygX-3/c3_2010en.html
Дата изменения: Mon Jan 24 15:22:48 2011 Дата индексирования: Tue Oct 2 08:57:28 2012 Кодировка: koi8-r Поисковые слова: cygnus |
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Cygnus X-3 is the generator of electromarnetic emission from radiowaves to Gamma-rays of high energies |
Russian version |
The close X-ray binary with relativisic jest, contained probably
a black hole, Cygnus X-3 has been detected in first time
in Gamma-rays at enegries higher 100 МeV (AGILE, Tavani et al., Nature, 2009)
during the intense radio flares, monitored with RATAN-600 radio telecope.
Thus in the first time such high energy radiation was detected
from the galactic binary star, located on 30000 light years from Sun.
Measurements in 2009-2010 period confirmed this discovery [Fig.3])
Un to now such HE gamma-emission has been detected only from
the active galactic nuclei -- extra-galactic objects with supoer-massive
black holes -- quasars and blasars. The bright radio flares from Cygnus X-3,
caused by the massive ejections of matter with velocity close to speed of light
accur in the certain ''huper-sort'' X-ray states
(RXTE PCA), that was in the first time determined in the studies of
HID -- ''hardness-intensity diagram'' [Fig.4].
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![]() ![]() ![]() Рис.3. Light curves Cygnus X-3 in gamma-rays (AGILE) and in radio cm-bands (Ryle tel., RATAN-600 and Mestahovi). ![]() Рис.4. ''hardness-intensity diagram'', plotted for 137 pointing PCA data of the RXTE observatory. In the top -- 6 X-ray spectra, determing the six different X-ray states. Below HID -- the each X-ray point have color, corresponded to the radio flux densities scale, given in right part. |