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Further NIR Flaring of the blazar PMN J2345-1555

ATEL # 2989; L. Carrasco, A. Carramiņana, E. Recillas, G. Escobedo, A. Porras, Y.D. Mayya, J.R. Valdes (INAOE, Mexico)
on 31 Oct 2010; 9:12 UT
Distributed as an Instant Email Notice (Request for Observations)
Password Certification: LUIS CARRASCO (

Subjects: Radio, Infra-Red, Optical, X-ray, Gamma Ray, >GeV, Request for Observations, AGN, Quasars
Referred to by ATEL #: 3004

Recently, we reported on the ongoing NIR flare of the Blazar PMN J2345-1555, identified with the FERMI source 1FGL J2344.6-1554, it is an intermediate redshift FRSQSO Z=0.621 (RA=23:45:12.5, Dec=-15:55:07.8 (J2000). On October 17th,2010 (JD 2455486.853959), we determined the NIR flux from this object to correspond to H = 14.997 +/- 0.06, (ATel#2977). The NIR flux enhancement was contemporary with the activity observed in the Optical and Gamma rays reported by D. Donato et al.(ATel #2972). The high activity on this source, has been confirmed by Swift (Kaufmann et al. ATel #2986). Yet on October 30th, 2010 JD 2455499.817020, we have detected a secondary flare of very large amplitude, reaching H = 12.165 +/- 0.05, that is an increase of a factor of 13 in flux in a brief period of time. For this reason we are submitting the present ATel. Due to its extreme variability, we strongly encourage further multi-wavelength coverage for this extremely variable source.

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