NIR brightening of 4C +38.41
ATel #3335; L. Carrasco, A. Carraminana, G. Escobedo, A. Porras, E. Recillas, D. Y. Mayya. (INAOE, Mexico)
on 10 May 2011; 15:54 UT
Credential Certification: LUIS CARRASCO (carrasco@inaoep.mx)
Subjects: Radio, Millimeter, Infra-Red, Optical, Gamma Ray, TeV, VHE, Request for Observations, AGN, Blazar, Quasar
Following the report by A. Szostek etal. (2011) (ATel #3333) of a Gamma Ray flare of 4C +38.41, detected by Fermi/LAT. We observed a NIR brightening of the flat spectrum radio source (+4C38.41) FBQSJ163515.4+380804 a high redshift blazar (z=1.813). On May 10th, 2011, epochs JD2455691.881888 and JD2455691.922641, we determine the flux in the H band to be 13.704 +/- 0.05 and 13.550 +/- 0.05
respectively. It is apparently rising fast in the NIR. Yet, the object has not reached the flux level observed on JD 2455635.029352 H = 13.072 +/- 0.05 (ATel #3238). These photometric points are to be compared with a recent low activity state H = 14.487 +/- 0.06 (JD2455665.834595). Yet, the object has not reached the flux that was observed on JD 2455635.029352. 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.
