Futher brightening of the ongoing NIR Flare of the QSO PKS0235+164
ATel #6987; L. Carrasco, J. Miramon, A. Porras, E. Recillas, V. Chavushyan, A. Carraminana, (INAOE, Mexico)
on 24 Jan 2015; 22:15 UT
Credential Certification: LUIS CARRASCO (carrasco@inaoep.mx)
Subjects: Radio, Infra-Red, Optical, Gamma Ray, AGN, Blazar, Quasar
Following the report of optical brightening of this object by Vlazyuk etal. (Atel#6970), we observed again, the high redshift QSO HB89 0235+164 (z=0.94) also known as BZB J0238+1636, associated with the Gamma ray source 2FGLJ0238.7+1637. On January 24th,2015 (JD, 2457046.7371), we obtained NIR photometry for this object and found it with enhanced fluxes corresponding to: J = 14.094 +/- 0.04, H = 13.140 +/- 0.04 and Ks = 12.256 +/- 0.04. While on JD 2457020.8182, we detected and reported in Atel#6863 this object at J = 14.749 +/- 0.05, H = 13.719 +/- 0.03 and Ks = 12.848 +/- 0.03. Hence it shows a further increase of its flux by 0.6 mag in a rather short lapse of 25 days. Hence the object has increased its flux by about 1.7 mag in the last 50 days. 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.
