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NIR Flare of the QSO TXS 2241+406

ATel #6402; L. Carrasco, A. Porras, E. Recillas, V. Chabushyan, A. Carraminana (INAOE, Mexico)
on 19 Aug 2014; 15:24 UT
Credential Certification: LUIS CARRASCO (carrasco@inaoep.mx)

Subjects: Radio, Infra-Red, Optical, Gamma Ray, AGN, Blazar, Quasar, Transient

Referred to by ATel #: 6780, 6837, 8030, 8318, 16981

We report on a recent NIR flare of the object TXS 2241+406 also known as BZB J2244+4057 (z=1.171), associated with the Gamma ray source 2FGLJ2244.1+4059. On July 29th,2014 (JD, 2456867.958) we obtained NIR photometry for this object and found it with enhanced fluxes corresponding to: J = 14.773 +/- 0.04, H = 13.877 +/- 0.02 and Ks = 12.996 +/- 0.06. The object might have been at detection limit at the the time of the 2Mass survey, with a flux corresponding to H ~ 17.8. Hence It has increased its flux by about a factor of 40. The present flare shows an increment in flux of a factor of 4 since we first detected this object on JD 2456650 (Atel #5690). Our 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 strongly encourage further multiwavelength coverage.