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NIR brightening of the blazar BZQJ1246-2547

ATel #5713; L. Carrasco, G. Escobedo, A. Porras, E. Recillas, V. Chabushyan, A. Carraminana, D. Mayya (INAOE, Mexico)
on 1 Jan 2014; 15:16 UT
Credential Certification: LUIS CARRASCO (carrasco@inaoep.mx)

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

Referred to by ATel #: 9002

We report on the NIR brightening of the intermediate redshift blazar BZQJ1246-2547 (z=0.633), also known as HB89 1244-255, associated with the gamma-ray source 2FGL1246.7-2546, our NIR photometry for this source implies that on Dec 24th,2013 (JD2456650.03676), the object brightness corresponded to J = 14.189 +/- 0.04, H = 13.387 +/- 0.04 and Ks = 12.463 +/- 0.03. These values are about 1.5 magnitudes brighter than our previous photometry, obtained on JD2456431, for this field. The object is brightest since we started monitoring it on JD 2454857. 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.