Two-year monitoring of LSI+61d303 with the RATAN-600 radio telescope
ATel #6786; S. A.Trushkin, N. A. Nizhelskij, P. G.Tsybulev (Special astrophysical observatory RAS)
on 6 Dec 2014; 11:20 UT
Credential Certification: Sergei Trushkin (satr@sao.ru)
Subjects: Radio, X-ray, Gamma Ray, >GeV, TeV, VHE, Binary, Black Hole
In the daily monitoring of microquasars with the RATAN-600 radio telescope (supported by RFBR) we have measured the light curves of the X-ray binary LSI+61d303 during from 16 November 2013 (MJD 56612) to 06 December 2014 (MJD 56997) at 4.8 and 11.2 GHz (with errors 5 and 10 % respectively)
with two gaps (15 December 2013 to 14 January 2014 and 29 September to 21 October 2014). We confirmed the main period 26.64+-0.05 days in flux densities at both frequencies using the Lomb periodograms. That is coincident with early detected orbital period 26.496 days (Gregory, 2002) while we did not found "twin peaks" around frequency 0.0375d^-1 in the
periodograms as Massi & Haron (2013) have detected from the archive GBI data. Unfortunately we did not observed LSI+61d303 during 16-17 October 2014, when the VERITAS collaboration has detected the bright TeV flare (Atel #6785). The first nearest data on 22 October (MJD 56952.41) are 154, 138 and 134 mJy at 4.6, 8.2 and 11.2 GHz probably near the maximum of the radio flare during orbital phases 0.7-0.8 as we can expect from the previous and next flares.
In the daily measured light curves at 4.8 and 11.2 GHz during 2013-2014 we marked the orbital phases 0.6. We will update the plot after continued measurements.
Radio light curves of LSI+61d303 in November 2013 - Decemeber 2014
