A New Giant NIR flare of the FSRQ HB891420+326
ATel #13028; L. Carrasco, G. Escobedo, E. Recillas, A. Porras, V. Chavushyan, V. M. Patino-Alvarez ( INAOE, Mexico)
on 14 Aug 2019; 17:06 UT
Credential Certification: LUIS CARRASCO (carrasco@inaoep.mx)
Subjects: Radio, Infra-Red, Optical, Gamma Ray, AGN, Quasar, Transient
Referred to by ATel #: 13382
We report on a New Giant NIR flare of the intermediate redshift (z=0.682) Blazar [HB89]1420+326, We observed the source at NIR wavelengths on July 8th ,2019 (MJD 2458672.803), we found the source with NIR fluxes corresponding to J = 12.136 +/- 0.04, H = 11.479 +/- 0.04 and Ks= 10.771 +/- 0.04. While on MJD2458627.844 the flux in was K = 14.288 +/- 0.05. Hence, the flux in the K band increased by a factor of 26 in this short lapse. Furthermore, The source was not detected in the 2mass Sky Survey at a flux limit H ~ 17.5. Then, the source has increased its flux by a factor of at least 250 in this longer lapse. The source has shown flaring activity in the past (see ATels #12201, #12277, #12379, #12866,#12941). 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 encourage further multi-wavelength coverage.
