NIR observations of the flaring quasar CGRaBSJ0809+5341
ATel #6136; L. Carrasco, E. Recillas, A. Porras, V. Chavushyan, A. Carraminana, D. Mayya (INAOE, Mexico)
on 14 May 2014; 20:26 UT
Credential Certification: LUIS CARRASCO (carrasco@inaoep.mx)
Subjects: Infra-Red, AGN, Blazar, Quasar, Transient
Referred to by ATel #: 10916
Following the report of a flare of the high redshift QSO (z=2.133) CGRaBSJ0809+5341 detected by MASTER OT J080941.65+534124.3 (Atel#6070). We carried out NIR photometry of the object on April 4th, 2014 (UT). Our results
for the epoch JD2456781.723449 are the following J = 15.793 +/- 0.02 ; H = 14.877 +/- 0.05 and Ks = 13.993 +/- 0.02. These values are to be compared with the 2MASS survey: there was not a source brighter than the 17th magnitude in any of those filters at that time. Hence the source has brighten by a factor of 30 at the very least. Our observations are 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 multiwavelength coverage.
