A New Large NIR Flare of the blazar HB891420+326
ATel #12866; L. Carrasco, G. Escobedo, E. Recillas, A. Porras, V. Chavushyan, V. M. Patino-Alvarez ( INAOE, Mexico)
on 13 Jun 2019; 00:43 UT
Credential Certification: LUIS CARRASCO (carrasco@inaoep.mx)
Subjects: Radio, Optical, Gamma Ray, AGN, Blazar, Quasar
We report on a New Large NIR flare of the intermediate redshift (z=0.682) Blazar [HB89]1420+326, We observed the source at NIR wavelengths on June 9th,2019 (MJD 2458643.8790), we found the source with NIR fluxes corresponding to J = 14.494 +/- 0.04, H = 13.719 +/- 0.04 and Ks= 12.804 +/- 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 4 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 30 in this longer lapse. The source has shown flaring activity in the past (see Atels #12201, #12277, #12379). 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.
