Yet another NIR flare of the blazar S4 1030+61

ATel #3287; L. Carrasco, A. Carraminana, E. Recillas, G. Escobedo, A. Porras, D. Y. Mayya. (INAOE, Mexico)
on 16 Apr 2011; 17:43 UT
Credential Certification: LUIS CARRASCO (carrasco@inaoep.mx)

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We report a new NIR flare of the blazar S41030+61 a z=1.4 Flat Radio QSO also known as SDSS J103351.42+605107.3 and CGRaBS J1033+60518, identified with a flaring FERMI/LAT source in Atel#2625 1FGLJ1033.8+6048 reported by Ciprini et.al in (ATel #2622). On Atel#2628 Swift confirmed S41030+61 as a counterpart of 1FGLJ1033.8+6048. After an initial NIR flare reported in Atel #2625, we observed an increase to a maximum brightness H = 13.065 +/- 0.02 on May 25,2010 (JD2455339.6747) and a decline afterwards. On June 20,2010 (JD 2455367.66861) the source had fainted down to H = 14.168 +/- 0.02. Yet on November 28, 2010 (JD2455529.039537), we found that the source was undergoing a new NIR flare and its luminosity was back to the maximum light previously observed H = 13.073 +/- 0.02 Atel#3062. Recently on April 15th,2011 (JD2545666.773854), we found that the source had brightened again, to H = 12.971 +/- 0.06 after a recent minimum of H = 13.749 +/- 0.04 on JD2455635.814433. The observations were carried out with the 2.1m telescope of the Guillermo Haro Observatory of the National Institute for Astrophysics, Optics and Electronics (Mexico), equipped with the instrument CANICA a NIR. We encourage further multi wavelength coverage for this interesting variable source.