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The very large NIR flare of the Blazar CGRaBsJ0510+1800

ATel #7117; L. Carrasco, A. Porras, E. Recillas, J. Leon-Tavares, V. Chavushyan, A. Carraminana (INAOE, Mexico)
on 21 Feb 2015; 00:34 UT
Credential Certification: LUIS CARRASCO (carrasco@inaoep.mx)

Subjects: Radio, Infra-Red, Optical, Gamma Ray, TeV, Request for Observations, AGN, Blazar, Quasar

Referred to by ATel #: 9672, 10271

We have observed the further development of a recent NIR flare of the intermediate redshift quasar CGRaBSJ0507+100 also known as PKS0507+17 (z=0.416), cross identified with the gamma ray source 1FGL J0510.0+1800. On February 8th, 2015, epoch JD2457061.8297, we determined the flux in the H band to be 12.832 +/- 0.05. That is 2.8 magnitudes brighter than the flux determined by the 2mass survey and has had a flux increment of factor of 6.2 since the epoch JD2456739.634, when we found this object at a flux level corresponding to H = 14.82 +/- 0.05. Worth mentioning is the fact that the the object is brightest since the time we started monitoring it on JD2455274. The activity of this object had been reported previously by several authors in Atels #4424 #4528,#4531,#4546,#4724 #4998 #6935 #6962. 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.