The very large NIR flare of the Blazar CGRaBsJ1058+0133
ATel #7135; L. Carrasco, E. Recillas, R. Gonzalez, A. Porras, J. Leon-Tavares, V. Chavushyan, A. Carraminana (INAOE, Mexico)
on 24 Feb 2015; 11:34 UT
Credential Certification: LUIS CARRASCO (carrasco@inaoep.mx)
Subjects: Radio, Infra-Red, Optical, Gamma Ray, VHE, AGN, Blazar, Quasar
We have observed the development of a recent NIR flare of the high redshift quasar CGRaBSJ1058+0133 also known as PKS1055+018 (z=0.89), cross identified with the gamma ray source 2FGL J1058.4+0133. On February 9th, 2015, epoch JD2457062.9139, we determined the flux in the H band to be 11.944 +/- 0.08. That is 3.2 magnitudes brighter than the flux determined by the 2mass survey and has had a flux increment of factor of 6.7 since the epoch JD2456804, when we found this object at a flux level corresponding to H = 14.02 +/- 0.09. Worth mentioning is the fact that the the object is brightest since the time we started monitoring it on JD2454895. The activity in visible light of this object had been reported by S. Jorstad in Atel #7114. Observations were 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.
