A New NIR Flare of the Blazar HB89 0716+714
ATel #12682; L. Carrasco, E. Recillas, G. Escobedo, A. Porras, V. Chavushyan (INAOE, Mexico)
on 23 Apr 2019; 16:12 UT
Distributed as an Instant Email Notice Transients
Credential Certification: LUIS CARRASCO (carrasco@inaoep.mx)
Subjects: Infra-Red, Request for Observations, AGN, Blazar, Quasar
Referred to by ATel #: 16980
We report on the ongoing NIR flare of the intermediate redshift QSO HB890716+714 (z=0.30) also known as CGRaBSJ0721+7120, associated with the Gamma-ray source 2FGLJ0721.9+7120. On April 9th,2019 (MJD, 2458582.653727), we obtained NIR photometry for this object and found it with enhanced fluxes corresponding to J = 11.847 +/- 0.03, H = 11.117 +/- 0.03 and Ks = 10.288 +/- 0.05. While on JD 2458575.6442, we detected this object at J = 12.209 +/- 0.03, H = 11.589 +/- 0.03 and Ks = 10.266 +/- 0.03. Hence, it shows an increment of its flux by a factor of 40% in the NIR in a rather short lapse of 7 days. The object is quite variable in the NIR and other wavelengths, (see ATel #12298 and references therein). 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.