Large NIR Flare of the Blazar TXS2013+370
ATel #14296; L. Carrasco, A. Porras, G. Escobedo, E. Recillas, V. Chavushyan, D. Maya (INAOE, Mexico)
on 29 Dec 2020; 18:35 UT
Credential Certification: LUIS CARRASCO (carrasco@inaoep.mx)
Subjects: AGN, Black Hole, Blazar, Quasar, Transient
Following the report ATel #14252, by the Fermi LAT Team on the enhanced Gamma Ray emission of the high redshift (z=0.859) Blazar TXS2013+370 cross correlated with the radio source MG2 J201534+3710 and the Gamma-Ray source 4FGLJ2015.5+3710. We did carried out NIR observations on several nights. On JD 2459205.616, we found the
source with fluxes corresponding to J = 14.177 +/- 0.04, H = 12.744 +/- 0.04 and Ks = 11.673 +/- 0.05. The source was not detected by the 2Mass survey so we inferred that the flux in the H-band had
increased by a factor larger than 100. While, on JD 2459206.605556, we detected a decreasing flux
corresponding to J = 14.467 +/- 0.04, H = 12.934 +/- 0.04 and Ks = 11.820 +/- 0.03. We have included this source in our regular monitoring program of AGN's.
Our observations are 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.
