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Continued activity of SS433: a new giant radio flare

ATel #6492; S. A.Trushkin, N. A. Nizhelskij, P. G.Tsybulev (SAO RAS)
on 24 Sep 2014; 11:02 UT
Credential Certification: Sergei Trushkin (satr@sao.ru)

Subjects: Radio, Millimeter, Sub-Millimeter, Far-Infra-Red, Infra-Red, Optical, X-ray, Gamma Ray, Request for Observations, Binary, Black Hole

Referred to by ATel #: 6504

In the daily monitoring of microquasars program with the RATAN-600 radio telescope (supported by RFBR) we have detected a new powerful flare from the X-ray binary SS433 (ATel #6364, #4484). On 23 September (MJD56923.67) the fluxes have risen to 1150, 736, 551, and 463 mJy at 4.65, 8.2, 11.2 and 21.7 GHz respectively (with errors ~5 %). The total spectrum is well fitted by a power law: S_nu[Jy] = 2.7 nu^(-0.60)[GHz]. In 2014 we have detected last similar giant flare on 8 March. The current period of activity of SS433 continues during almost 80 days and characterized by some bright optical flares (ATel #6347, #6355) and the smaller radio flares. The daily measured light curves at 4.65 - 21.7 GHz during from July to September 2014 are shown in the plot:

Light curves of SS433 in July-September 2014