Giant NIR Flare of the FSRQ S4 0954+658
ATel #7046; L. Carrasco, A. Porras, E. Recillas, R. Gonzalez, V. Chavushyan, A. Carraminana (INAOE, Mexico)
on 11 Feb 2015; 10:49 UT
Credential Certification: LUIS CARRASCO (carrasco@inaoep.mx)
Subjects: Radio, Infra-Red, Optical, Gamma Ray, TeV, AGN, Blazar, Quasar
We report on a giant NIR flare of the intermediate redshift FSRQ S4 0954+658(z=0.368), also known as CGRaBSJ0958+6533 associated with the gamma-ray source 2FGL0958.6+6533. Our most recent NIR photometry for this source shows that on February 8th,2015 (JD2457061.962), the object brightness corresponded to J = 13.318 +/- 0.03, H = 12.525 +/- 0.05 and Ks = 11.880 +/- 0.04.The NIR fluxes in the JHK bands has been increasing monotonically since JD 2456992.04, when the observed fluxes were: J = 15.194 +/- 0.05, H = 14.315 +/- 0.05 and Ks = 13.472 +/- 03. Hence the object has increased its luminosity by a factor of more than 5 in this lapse. The object has shown flaring activity in different wavelength bands in the past. (see Atels #3220, #6709, #6996, #7001, #7007). 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.