[ Previous | Next | ADS ]

RATAN-600 multi-frequency measurements of flaring activity of BL Lacertae

ATel #5002; M. Mingaliev, S. Trushkin, J. Sotnikova , A. Erkenov, T. Mufakharov (SAO RAS)
on 23 Apr 2013; 11:32 UT
Credential Certification: Sergei Trushkin (satr@sao.ru)

Subjects: Radio, Millimeter, Sub-Millimeter, Optical, X-ray, AGN, Blazar

Measurements at 21.7, 11.2, 8.2 and 4.8 GHz with the RATAN-600 radio telescope show that flux densities (ATEL #4973) of the BL Lacertae (B2200+42) continue to rise from December 2012 (ATEL #4600, ATEL #4565). At 4.8 GHz we observe small flux increase on March-April 2013 -- 6-7 Jy with errors are better than 3%. A flux density of 10.2 +/- 0.36, 10.2 +/-0.5 and 11.1 +/- 0.9 Jy at 8.2 GHz, 11.2 and 21.7 GHz respectively on 14 April. Thus BL Lac has almost flat radio spectrum. We continue to monitor BL Lacertae at four frequencies with the RATAN-600 telescope.