A recent NIR Flare of the QSO BZQJ1727+4530
ATel #6614; L. Carrasco, A. Porras, E. Recillas, D. Y. Mayya, V. Chavushyan, A. Carraminana, (INAOE, Mexico)
on 24 Oct 2014; 01:06 UT
Credential Certification: LUIS CARRASCO (carrasco@inaoep.mx)
Subjects: Radio, Infra-Red, Optical, Gamma Ray, AGN, Blazar, Quasar
We report on the recent NIR brightening of BZQ J1727+4530 (B31726+455) an intermediate redshift quasar (z=0.717) also known as CGRaBS J1727+4530, associated with the Gamma-ray source 2FGLJ 1727.1+4531. On October 3rd, 2014 (JD 2456933.6206) We determined the flux from this object to correspond to J = 15.680 +/- 0.02, H = 14.974 +/- 0.06 and Ks = 13.824 +/- 0.03. That is about 1.5 mag brighter than the flux value measured by our team previously. On JD2456803.6455, we determined a flux corresponding to J = 16.868 +/- 0.06 , H = 16.224 +/- 0.09 and Ks = 15.359 +/- 0.04. Henceforth, this QSO has had a significant increase in flux by a factor of 4 in this rather short lapse. This object is included in our NIR monitoring program of Gamma Ray bright AGNs. Our observations were carried out with the 2.1m telescope of the Guillermo Haro Observatory of the National Institute for Astrophysics, Optics and Electronics (Mexico), equipped with the instrument CANICA a NIR camera. We encourage further multi wavelength coverage of this object.
