A new NIR Flare of the Blazar CGRaBSJ2345-1555
ATel #8310; L. Carrasco, A. Porras, E. Recillas, V. Chavushyan, A. Carraminana (INAOE, Mexico)
on 20 Nov 2015; 08:39 UT
Credential Certification: LUIS CARRASCO (carrasco@inaoep.mx)
Subjects: Radio, Infra-Red, Optical, Gamma Ray, AGN, Blazar, Quasar
We report on the recent NIR flare of the high redshift QSO BZQJ2345-1555 (z=0.621), cross identified with the source CGRaBSJ2345-1555 and the gamma-ray source 2FGLJ2345.0-1553. On November 1st,2015 (MJD 2457327.70), we found the source with the following fluxes in the NIR: J= 13.247 +/- 0.02, H = 12.417 +/- 0.05 and Ks = 11.412 +/- 0,05. This is to be compared with our previous observation on MJD 2457297.76, when the source flux corresponded to J = 14.030 +/- 0.02, H = 13.062 +/- 0.04 and Ks = 12.375 +/- 0.09 . Hence the source has had a flux increment of a factor 2.5 in this short lapse. This source has shown flaring activity in the past (see ATEL #2977)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.
