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Another NIR Flare of the quasar 3C454.3

ATel #5401; L. Carrasco, A. Porras, E. Recillas, A. Carraminana (INAOE, Mexico)
on 19 Sep 2013; 03:05 UT
Credential Certification: LUIS CARRASCO (carrasco@inaoep.mx)

Subjects: Infra-Red, Gamma Ray, VHE, AGN, Blazar, Quasar, Transient

We report on another NIR flare of the intermediate redshift quasar 3C454.3 also known as CGRaBSJ2253+1608 (z=0.859), cross identified with the gamma ray source 1FGLJ2353.9_1608. On September 12th,2013, epoch JD2456547.8221 we determined the flux in the H band to be 12.885 +/- 0.05. This value is 0.8 magnitudes brighter than the flux we determined on JD2456432.94229, when we found the object to be H = 13.625 +/- 0.06. Presently, the object is undergoing a NIR flare similar to the one previously observed for the epoch JD2455512. 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 strongly encourage further multi-wavelength coverage.