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Yet another NIR Flare of the Blazar HB89 0716+714

ATel #8942; L. Carrasco, A. Porras, E. Recillas, V. Chavushyan, J. Leon-Tavares, R. Gonzalez (INAOE, Mexico)
on 13 Apr 2016; 00:01 UT
Credential Certification: LUIS CARRASCO (carrasco@inaoep.mx)

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

e report on the new NIR flare of the intermediate redshift QSO HB890716+714 (z=0.30) also known as CGRaBS J0721+7120, cross identified with the Gamma ray source 2FGLJ0721.9+7120. On April 4th.2016 (JD, 2457482.74), we obtained NIR photometry for this object and found it with enhanced fluxes corresponding to J = 11.068 +/- 0.04, H = 10.400 +/- 0.04 and Ks = 9.606+/- 0.05. While on JD 2457447, we detected this object at J = 12.147 +/- 0.05, H = 11.349 +/- 0.03 and Ks = 10.672 +/- 0.04. Hence, it shows an increment of its flux by a factor of about 2 in the NIR in a rather short lapse of 30 days. The object is presently brightest since the time we started monitoring it in these bands on JD2454423. The object has shown flaring activity at all wavelengths in the recent past, reported in Atels # 6902, #6944, #6953, #6957, #6999, #7026, #7268 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.