A Recent NIR Flare of the QSO HB891803+784
ATel #6369; L. Carrasco, A. Porras, A. Carraminana, E. Recillas, V. Chavushyan, D. Y. Mayya. (INAOE, Mexico)
on 5 Aug 2014; 16:41 UT
Distributed as an Instant Email Notice Transients
Credential Certification: LUIS CARRASCO (carrasco@inaoep.mx)
Subjects: Radio, Infra-Red, Optical, Gamma Ray, AGN, Blazar, Quasar
We call your attention on our recent observations in the NIR of the Gamma Ray source 2FGLJ1800.5+7829 related with the radio source S5 1803+78 and the quasar HB891803+784 (z=0.68) with the CANICA NIR camera on the 2.1m telescope at the Observatorio Astrofisico Guillermo Haro, located in Cananea, Mexico. On July 25th,2014,(JD2456863.835), we found this blazar to be in an outburst state. It showed fluxes about 1.5 magnitudes brighter than our previous NIR photometry. On this date the source had increased fluxes, corresponding to J = 12.828 +/- 0.03 , H = 12.101 +/- 0.04 and Ks = 11.270 +/- 0.07 , the source is brightest since the time we started monitoring it on JD 2455002. This flux in the Ks band, is a factor of 6 times larger than the flux observed on JD24556464 (Ks = 13.25), with the same instrument. It is a quite significant increase in luminosity in this lapse. We encourage further multiwavelength observations.
