A giant radio flare of Cygnus X-3

Details A giant radio flare of Cygnus X-3 A giant radio flare of Cygnus X-3

Apr 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008atel.1483....1t&link_type=abstract

The Astronomer's Telegram, #1483

Astronomy and Astrophysics

Astronomy

3

Radio, Millimeter, X-Ray, Request For Observations

Scientific paper

Just after beginning of new activity in hard X-rays according to the ASM Swift-BAT data (15-50 keV) we detected a powerful flare from the microquasar Cygnus X-3 with the RATAN-600 radio telescope on April 18. The measured flux densities are 1.16, 5.05, 12.2, 15.94, 16.16, 13.06 and 12.3 Jy at 1, 2.15, 4.8, 7.7, 11.2, 21.7 and 30 GHz respectively (MJD54574.16). Thus the spectra has optically thick region at frequencies lower 4.8 GHz and optically thin region at frequencies higher 7.7 GHz.

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