A new NIR flare of the FSRQ TXS2159+505 (NRAO 676)
ATel #4472; L. Carrasco, A. Luna, D. Y. Mayya, G. Escobedo, A. Carraminana, (INAOE, Mexico)
on 9 Oct 2012; 22:09 UT
Credential Certification: LUIS CARRASCO (carrasco@inaoep.mx)
Subjects: Radio, Infra-Red, Optical, Gamma Ray, >GeV, AGN, Blazar, Quasar
We have observed a recent NIR brightening of the high redshift, flat spectrum QSO TXS2159+505
(z=1.899). It has been previously reported as a flaring gamma ray source in Atel #4182 and in optical wavelengths in Atel #4254. On September 26th, 2012, epoch JD2456196.774433, we determined the flux in the H band to be 15.748 +/- 0.02. That is to be compared with a flux corresponding to H = 16.582 +/- 0.06 for epoch JD2456101.885972 and H = 15.971 +/- 0.05 on JD2456186.804618, that is an increase in flux of 40% in a lapse of 10 days. So the flux in the NIR is raising fast.
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 encourage further multi wavelength coverage
