NIR brightening of the Flat Spectrum Radio Source FBQS1221+3010
ATel #12377; L. Carrasco, G. Escobedo, E. Recillas, A. Porras, V. Chavushyan (INAOE, Mexico)
on 11 Jan 2019; 04:28 UT
Credential Certification: LUIS CARRASCO (carrasco@inaoep.mx)
Subjects: Radio, Infra-Red, Optical, X-ray, Gamma Ray, AGN, Blazar, Quasar, Transient
We report on the NIR brightening of the low redshift (z=0.1836) Flat Spectrum Radio Source FBQS1221+3010, also known as HB89 1218+304, cross-correlated with the X-ray source RBS1100 and the Gamma-ray source 3FGLJ1221.3+3010. On January 4th,2019 (MJD 2458487.977), we found the source with NIR fluxes corresponding to J = 14.088 +/- 0.06, H = 13.443 +/- 0.05 and Ks= 12.652 +/- 0.04. On MJD 2458243.74 the flux in the Ks band corresponded to Ks = 13.215 +/- 0.05. Hence, the source has increased its flux by a factor of 1.7, in this lapse. The source is brightest since the time of the 2MASS sky survey, when the source was H = 14.388 mag. 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 encourage further multi-wavelength coverage.
