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NIR Flaring of the Quasar 3C454.3

ATEL # 2988; L. Carrasco, A. Carramiņana, E. Recillas, G. Escobedo, A. Porras, Y.D. Mayya, J.R. Valdes (INAOE, Mexico)
on 31 Oct 2010; 8:02 UT
Distributed as an Instant Email Notice (Request for Observations)
Password Certification: LUIS CARRASCO (

Subjects: Request for Observations, AGN, Quasars
Referred to by ATEL #: 2995, 3003, 3005, 3022, 3034, 3036, 3041

We report the ongoing NIR flare of the quasar 3C454.3, also known as [HB89]2251+158. It is likely associated with a gamma ray source CGRaBSJ2253+1608 and the radio source WMAP055. It is an intermediate redshift FRSQSO Z=0.859 (RA=22:53:57.75, Dec=+16:08:53.6(J2000). On October 31th,2010 (JD 2455500.781451), we determined the NIR flux from this object to correspond to H = 11.190 +/- 0.03, 0.63mag brighter than it was two days earlier(JD 2455498.821166) when we determined it to have H = 11.820 +/- 0.03. The object is now brightest in the time span of 3 years that we have been observing it in a systematic way. We encourage further multiwavelength observations of this variable object.

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