NIR followup of the Blazar PKS 0735+178
ATel #15148; L. Carrasco, E. Recillas, G. Escobedo, A. Porras, V. Chavushyan, Y. D. Mayya (INAOE, Mexico)
on 30 Dec 2021; 18:36 UT
Credential Certification: LUIS CARRASCO (carrasco@inaoep.mx)
Subjects: Infra-Red, Gamma Ray, AGN, Blazar, Quasar, Transient
Referred to by ATel #: 15290
After the report by Fermi-LAT of a Gamma-ray flaring of the Blazar PKS 0735+178 (ATel #15129) and
the observations in the Ks Band (ATel #15136), we observed the object in the NIR, on December 27th,2021 (JD 2459575.8069) and found that its fluxes corresponded to J = 13.53 +/- 0.07, H = 12.74 +/- 0.03 and Ks = 12.04 +/- 0.04. The latter is to be compared with the value Ks = 11.57 +/- 0.03 reported
in ATel #15136, for December 16th, 2021. Clearly we are detecting the decay of the Gamma-ray flare.
Our previous NIR photometry for this object (JD2459326.6632) is J = 14.28 +/- 0.07, H = 13.73 +/- 0.04 and Ks = 12.54 +/- 0.03. 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.
