A NIR flare of the Blazar CGRaBS J1734+3857.
ATel #12545; L. Carrasco, G. Escobedo, E. Recillas, A. Porras, V. Chavushyan (INAOE, Mexico)
on 2 Mar 2019; 21:15 UT
Distributed as an Instant Email Notice Transients
Credential Certification: LUIS CARRASCO (carrasco@inaoep.mx)
Subjects: Radio, Infra-Red, Optical, Gamma Ray, AGN, Quasar
We report on an important NIR flare of the Blazar CGRaBS J1734+3857, also known as B21732+38a, cross-correlated with the Gamma-Ray source 3FGLJ17.34.3+3858 and the large redshift quasar BZQJ1734+3857 (z=0.970). On February 27th,2019 (MJD 2458541.055521, we found the source with a flux corresponding to H = 13.399 +/- 0.05. While on MJD 2458384.701 the flux in the H band was H = 14.676 +/- 0.07. Hence, the source has increased its flux by at least factor of 3.2, in this rather short lapse. The source is at 80% of its brightest flux observed, since the time we started monitoring it on MJD 2455333, when the source had H = 16.243 mag. 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.
