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ATEL # 1819; S. A. Trushkin and N.N. Nizhelskij (SAO RAS)
on 29 Oct 2008; 7:03 UT
Distributed as an Instant Email Notice (Request for Observations)
Password Certification: Sergei Trushkin (firstname.lastname@example.org)
Subjects: Radio, Millimeter, Optical, X-ray, Request for Observations, Binaries, Black Holes
The supercritical accretor, high-mass X-ray binary, SS433 is in the very intense radio flare just in the first day of new monitoring set with the RATAN-600 radio telescope (SAO RAS). 28 October 2008 (MJD 54767.58) the measurements at 1-22 GHz show the power law spectrum: S_nu[Jy]=2.9nu^(-0.5)[GHz]. Probably that is the highest state spectrum from December 2007 (Trushkin et al. 2008, astro-ph:0810.3376) and by almost three times higher than in a quiet state of SS433. The RXTE/ASM weather map (http://heasarc.gsfc.nasa.gov/cgi-bin/xte_weather/xte_lc.pl?source=SS433&action=display datan=display data) show relatively bright single X-ray event at level: 5.95+/-0.99 counts/sec/SSC at MJD 54767.456.
We will continue to monitor the source daily.
Radio spectrum of SS433 28 Oct 2008