Strong NIR Flare in B21144+40
ATel #3374; L. Carrasco, A. Carraminana, E. Recillas, G. Escobedo, A. Porras, D. Y. Mayya. (INAOE, Mexico)
on 24 May 2011; 04:59 UT
Credential Certification: LUIS CARRASCO (carrasco@inaoep.mx)
Subjects: Radio, Millimeter, Infra-Red, Optical, Gamma Ray, TeV, VHE, Request for Observations, AGN, Blazar, Quasar
After our report (ATel #3347) of recent NIR activity in B21144+40, a z-1.088 QSO also known as CGRaBS J1146+3958, we have follow the luminosity evolution of this object, and we report now a fast increase in flux in a eight day period. On JD2455693.717975, we determined its flux to correspond to
H = 13.439 +/- 0.05, while on JD2455701.794745, the flux was 12.269 +/- 0.05. That is an increase of a factor of 3 in a short period of time. 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.
