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A new NIR Flare of the Blazar 4C+50.11

ATel #16982; L. Carrasco, A. Porras, E. Recillas, G. Escobedo, L. Felix (INAOE, Mexico)
on 16 Jan 2025; 11:53 UT
Credential Certification: LUIS CARRASCO (carrasco@inaoep.mx)

Subjects: Radio, Infra-Red, X-ray, AGN, Black Hole, Blazar

We report on a recent NIR brightening of the high redshift (z=1.52) quasar 4C+50.11 also known as NRAO 150 and cross identified with the X-ray source 1RXS J035930.6+505730. On December 22nd,2024, (JD2460666.8310), we determined the flux in the H band to be H = 12.920 +/- 0.03. That is 2.4 magnitudes brighter than the flux we have previously determined for the epoch JD2460327.8189, when we found the object with a flux level corresponding to H = 15.319 +/- 0.05. Hence, the flux in this photometric band increased by factor of 9 in this lapse. The object is brightest since the time we started monitoring it on JD2455477. 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 encourage further multi wavelength coverage.