A NIR Flare of the Blazar PKS1510-089
ATel #7466; L. Carrasco, E. Recillas, A. Porras, J. Leon-Tavares, V. Chavushyan, A. Carraminana, D. Mayya (INAOE, Mexico)
on 1 May 2015; 15:38 UT
Credential Certification: LUIS CARRASCO (carrasco@inaoep.mx)
Subjects: Radio, Infra-Red, Optical, Gamma Ray, AGN, Blazar, Quasar
After the report of the brightening in the V band, reported in Atel#7384 by Ztanek etal, 2015, we carried out follow up NIR observations of the intermediate redshift (z=0.36) quasar BZQJ1512-0905, associated with the radio source PKS1510-089, cross identified with the gamma-ray source 2FGLJ1512.8-0906. On April 29th,2015 (JD2457141.9659), we found the source with NIR fluxes corresponding to J = 13.139 +/- 0.04, H = 12.318 +/- 0.04 and Ks = 11.425 +/- 0.03. Our previous observation of this source (JD2459123) yielded fluxes corresponding to J = 13.932 =/- 0.03, H = 12.861 +/- 0.02 and Ks = 12.001 =/- 0.3. Hence, it has had a significant increase (a factor ~2) in flux at NIR wavelengths in this 19 day lapse. Worth mentioning is the fact that the object is brightest at NIR wavelengths since the time we starting monitoring it on JD2454451.9. This object has shown flare activity at other wavelengths in the past (see Atel#5416, Atel#5422). 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.
