Large NIR Brightening of the Blazar BZQJ1345+4452
ATel #12785; L. Carrasco, E. Recillas, A. Porras, G. Escobedo, V. Chavushyan (INAOE, Mexico)
on 20 May 2019; 23:14 UT
Credential Certification: LUIS CARRASCO (carrasco@inaoep.mx)
Subjects: Radio, Infra-Red, Optical, Gamma Ray, Blazar, Quasar
We report on a NIR flare of the very high redshift quasar BZQJ1345+4452 (z=2.534), associated with the radio source B31343+451 and the gamma-ray source 3FGL1345.6+4453. Our recent NIR photometry for this source shows that on May 8th,2019 (MJD2458611.9187) the object brightness corresponded to J = 15.75 +/- 0.06, H = 14.68 +/- 0.06 and K = 13.613 +/- 0.05. The value for the H Band is about 2.60 magnitudes brighter than our H Band photometry, obtained on MJD2458258.83, for this field. Hence it has increased its flux by a factor of 12 in this lapse of. The object is brightest since we started monitoring it on JD 2456656. 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.
