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A New Fast NIR Flare of the Blazar BZQJ0237+2848

ATel #12401; L. Carrasco, G. Escobedo, A. Porras, E. Recillas, V. Chavushyan (INAOE, Mexico)
on 16 Jan 2019; 19:05 UT
Credential Certification: LUIS CARRASCO (carrasco@inaoep.mx)

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

Referred to by ATel #: 15031, 15084

We report on a new very fast NIR flare of the high redshift QSO (z=1.213) [hb89]0234+285 also known as BZQJ0237+2848, cross-correlated with the radio source 4C+28.07 and the Gamma-ray source 3FGLJ0237.9+2848. On January 5th,2019 MJD(2458488.6608), we found the source with NIR fluxes corresponding to J = 13.620 +/- 0.04, H = 12.800 +/- 0.05 and Ks= 12.085 +/- 0.06. On MJD 2458487.657 the flux in the H band corresponded to H = 13.237 +/- 0.06. Hence, the source has increased its flux by 50%, in one day. The source has shown flaring activity in the past (see ATel #10034, #11261, #12111, #12321) 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.