A recent NIR flare of the Blazar CGRaBSJ1751+0939
ATel #18095; L. Carrasco, A. Porras ,L. Felix, G. Escobedo, E. Recillas (INAOE, Mexico)
on 8 Oct 2026; 12:02 UT
Distributed as an Instant Email Notice Transients
Credential Certification: LUIS CARRASCO (carrasco@inaoep.mx)
Subjects: Radio, Infra-Red, Optical, Gamma Ray, AGN, Blazar, Quasar
We report on the recent NIR flare of the intermediate redshift Blazar CGRaBSJ1751+0939 (z= 0.322) also known as QSO OT081, cross-correlated with the gamma ray source 4FGLJ1751.5+0938. On September 19th, 2026 (JD2461302.7492), we found the object undergoing a new outburst, at that time, the fluxes in the JHK bands corresponded to J=13.600+/-0.03, H=12.659+/-0.03 and Ks=11.629+/-0.03. While the fluxes in JHK bands on JD2460845.87 corresponded to: J=14.808+/-0.030, H=13.763+/-0.030 and Ks=12.737+/-0.06. Hence, the object had almost tripled its fluxes in every one of the JHK bands during this lapse. Our observations are carried out with CANICA a NIR camera on the 2.1m telescope at the Observatorio Astrofisico Guillermo Haro, operated by the National Institute for Astrophysics, Optics and Electronics (INAOE, Mexico). We encourage further multiwavelength observations.
