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An ongoing NIR Flare of the Blazar HB89 0716+714

ATel #6902; L. Carrasco, A. Porras, E. Recillas, J. Leon-Tavares, V. Chavushyan, A. Carraminana (INAOE, Mexico)
on 12 Jan 2015; 02:56 UT
Distributed as an Instant Email Notice Transients
Credential Certification: LUIS CARRASCO (carrasco@inaoep.mx)

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

Referred to by ATel #: 6944, 6953, 6957, 6999, 7026, 7268, 8942, 13359

We report on the ongoing NIR flare of the intermediate redshift QSO HB890716+714 (z=0.30) also known as CGRaBS J0721+7120, associated with the Gamma ray source 2FGLJ0721.9+7120. On January 11th,2015 (JD, 2457033.8504), we obtained NIR photometry for this object and found it with enhanced fluxes corresponding to J = 11.270 +/- 0.03, H = 10.605 +/- 0.03 and Ks = 9.794 +/- 0.05. While on JD 2457021.0025, we detected this object at J = 12.338 +/- 0.03, H = 11.613 +/- 0.03 and Ks = 10.888 +/- 0.03. Hence it shows an increment of its flux by a factor of 2.5 in the NIR in a rather short lapse of 12 days. The object is presently brightest since the time we started monitoring it in these bands on JD2454423. Our observations were 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.