A Giant NIR flare of the FRQS PKS1441+25
ATel #7459; L. Carrasco, E. Recillas, A. Porras, J. Leon-Tavares, V. Chavushyan, A. Carraminana (INAOE, Mexico)
on 29 Apr 2015; 21:30 UT
Credential Certification: LUIS CARRASCO (carrasco@inaoep.mx)
Subjects: Radio, Infra-Red, Gamma Ray, TeV, AGN, Blazar, Quasar
After the report of a bright Gev Gamma-ray flare detected by Fermi LAT, reported in ATEL#6878 and the recent detection of the source by MAGIC, (reported by Mirzoyan,2915 Atel#7416) we carried out follow up NIR observations of the high redshift (z=0.939) FRQS PKS1441+25, cross identified with the gamma-ray source 2FGLJ1444.1+2500 and the radio source S3 1441+25. On April 28th,2015 (JD2457140.9519), we found the source with NIR fluxes corresponding to J = 14.630 +/- 0.04, H = 13.714 +/- 0.03 and Ks = 12.942 +/- 0.05. At the time of the 2MASS IR survey the source was fainter than H ~ 17.5. Our previous observation of this source (JD2457047) yielded a flux corresponding to H = 15.116 +/- 0.06 somewhat brighter than another previous observation reported in (Atel#6895) Hence, it has had a significant increase in flux at NIR wavelengths probably associated with the Gamma-ray flaring activity. Our observations were 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.
