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A new NIR Flare of the Blazar PKS0235+164

ATel #11001; L. Carrasco, G. Escobedo, E. Recillas, A. Porras, V. Chavushyan, D. Y. Mayya (INAOE, Mexico)
on 23 Nov 2017; 22:37 UT
Credential Certification: LUIS CARRASCO (carrasco@inaoep.mx)

Subjects: Radio, Infra-Red, Optical, Gamma Ray, AGN, Blazar, Quasar

We report on the recent NIR flare of the high redshift QSO (z=0.94) PKS0235+164 also known as CGRaBSJ0238+1636, cross correlated with the Gamma-ray source 2FGLJ0238.7+1637.On November 14th 2017 MJD(2458071.8471), we found the source with NIR fluxes corresponding to J = 15.369 +/- 0.04, H = 14.134 +/- 0.04 and Ks = 13.227 +/- 0.03. While, on MJD 2458026 the flux in the H band corresponded to H = 15.827 +/- 0.03. Hence, the source has increased its flux by a factor of 4 in this short lapse. The source is known for showing flare activity in the past, see ATEL #8044, #8429 #10062. 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.