Recent NIR brightening of the QSO BZQJ2157+3127
ATel #12244; L. Carrasco, J. Miramon, E. Recillas, A. Porras, V. Chavushyan, D. Y. Mayya (INAOE, Mexico)
on 28 Nov 2018; 12:22 UT
Credential Certification: LUIS CARRASCO (carrasco@inaoep.mx)
Subjects: Radio, Infra-Red, Gamma Ray, AGN, Blazar, Quasar
We report on a recent NIR brightening of the high redshift (z=1.486) QSO BZQJ2157+3127 associated with the radio source B22155+31 and the Gamma ray source 3FGLJ2157.5+3126. On November 27th,2018 (MJD 2458449.7302) we obtained NIR photometry for this object and found it with an increased flux, corresponding to H = 16.562 +/- 0.04. Our previous photometry for this object on JD2458026 yielded fainter fluxes H = 18.253 +/- 0.06, that about a factor 5 smaller. The object is brightest since the time (MJD 245654t) when we started monitoring it at NIR wavelengths. 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.
