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Fast Flare of 3C454.3 in the NIR

ATEL # 3042; L. Carrasco, A. Carramiņana, E. Recillas, J.R. Valdes, G. Escobedo, A. Porras, Y.D. Mayya (INAOE, Mexico)
on 19 Nov 2010; 12:00 UT
Distributed as an Instant Email Notice (Request for Observations)
Password Certification: LUIS CARRASCO (

Subjects: Infra-Red, Gamma Ray, Request for Observations, AGN, Gamma-Ray Bursts, Quasars

We confirm the detection of a fast NIR flare in the blazar, 3C454.3 (z = 0.859) likely the counterpart of the the Gamma ray flare seen by Fermi/Lat, reported in ATel#3041 by D. Sanchez Our observations for the J,H and Ks NIR bands show a similar behavior. Our photometry for the H band, follows the Julian Date of the observation for the nights of Nov14,2010 through Nov18,2010. JD 2455514.608881 H =10.661, 2455515.748487 H = 10.877, 2455516.694820 H = 11.206, 2455517.712791 H = 10.182, 2455518.716872 H = 10.399. We can clearly see an increase in flux by a factor of 2.6 in a lapse of 24 hours in Nov17,2010. On Nov18,2010 the source was a declining in flux by 20%. Observations were carried out with the 2.1m telescope of the Guillermo Haro Observatory of the National Institute for Astrophysics, Optics and Electronics (Mexico), equipped with the instrument CANICA a NIR camera. We encourage further multi wavelength coverage for this variable source.

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