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A NIR Flare of the FSRQ 4C+40.25

ATel #9003; L. Carrasco, E. Recillas, A. Porras, V. Chavushyan, J. Leon-Tavares (INAOE, Mexico)
on 28 Apr 2016; 03:17 UT
Credential Certification: LUIS CARRASCO (carrasco@inaoep.mx)

Subjects: Radio, Infra-Red, Optical, Gamma Ray, AGN, Blazar, Quasar

We report on the recent NIR Flare of the high redshift blazar BZQJ1023+3948 (z=1.254), also known as HB89 1020+400, associated with the gamma-ray source 3FGL1023.1+3948. Our NIR photometry for this source on April 16th,2016 (JD2457494.6982), the object brightness corresponded to J = 15.065 +/- 0.06, H = 13.948 +/- 0.04 and Ks = 13.422 +/- 0.06. These values are about 2.3 magnitudes brighter than our previous photometry for the Ks band (Ks = 15.771 +/- 0.04), obtained on JD2457465.8, for this field. The object is brightest since we started monitoring it on JD 2455330. This object has undergone flaring activity in other wavelengths in the past (see Atel#8339). Our observations are carried out with the 2.1m telescope of the Guillermo Haro Observatory operated by the National Institute for Astrophysics, Optics and Electronics (Mexico), equipped with the instrument CANICA a NIR camera. We strongly encourage further multiwavelength coverage.