NIR brightening of the Blazar PG1553+113
ATel #7285; L. Carrasco, E Recillas, A. Porras,, V. Chavushyan, A. Carraminana (INAOE, Mexico)
on 24 Mar 2015; 23:15 UT
Credential Certification: LUIS CARRASCO (carrasco@inaoep.mx)
Subjects: Radio, Infra-Red, Optical, Gamma Ray, AGN, Blazar, Quasar
We report on the NIR brightening of the intermediate redshift (z=0.36) blazar PG1553+113. Also known as CGRaBSJ1555+1111, associated with the Gamma-ray source 2FGLJ1555.7+1111. On March 15th, 2015 (JD2457097.0372), we found this object with fluxes corresponding to: H = 11.744 +/- 0.05, J = 12.563 +/- 0.06 and Ks = 11.154 +/- 0.06. These values are about a factor of 2 brighter of the ones we determined previously for this object on JD2456867.75. The present NIR fluxes are largest since the time we started monitoring this object on JD2456384. 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.
