A possible WISE blazar counterpart of the new GeV source Fermi J1350-1140

ATel #4086; A. Paggi (SAO), F. Massaro (Stanford University), R. D'Abrusco (SAO)
on 3 May 2012; 17:31 UT
Credential Certification: Francesco Massaro (francesco_mss@yahoo.it)

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Following the Fermi LAT detection of a GeV flare from a possible new extragalactic gamma-ray source FERMI J1350-1140 (ATEL #3788), we searched in the Wide-field Infrared Survey Explorer (WISE; Wright et al. 2010 AJ, 140, 1868) catalog at the position of the Fermi source for a gamma-ray blazar candidate using the association procedure outlined in Massaro, F. et al. 2011 ApJ, 740L, 48 and in Massaro, F. et al. 2012 ApJ in press (http://arxiv.org/abs/1203.3801). Our association procedure is based on infrared color analyses using WISE data.

Our search found a single source with IR colors typical of gamma-ray blazars within the Fermi positional uncertainty. The source is WISE J134931.45-113253.8 and its coordinates are:
R.A.(J2000) = 13h49m31.45s (207.3810463 deg)
Dec. (J2000) = -11d32m53.86s (-11.5482934 deg).

According to the WISE All-sky catalog (available at http://wise2.ipac.caltech.edu/docs/release/allsky/ ), WISE J134931.45-113253.8 is detected in all four energy bands with the following magnitudes:
m(3.4 micron) = 13.119 +/- 0.024
m(4.6 micron) = 12.076 +/- 0.022
m(12 micron) = 9.391 +/- 0.030
m(22 micron) = 7.062 +/- 0.076

The WISE gamma-ray blazar candidate (WISE J134931.45-113253.8) is positionally consistent (0.164 arcsec offset) with the VLBA position of the radio source PKS 1346-112 (R.A. (J2000): 13h49m31.44s: 207.3810 deg, Dec. (J2000): -11d32m53.9s: -11.5483 deg, Beasley et al. 2002, ApJS, 141, 38), which was indicated as a possible low energy counterpart of the Fermi transient (ATel# 3788). We conclude that the new Fermi source is most probably a gamma-ray blazar.

This analysis makes use of data products from the Wide-field Infrared Survey Explorer, which is a joint project of the University of California, Los Angeles, and the Jet Propulsion Laboratory/California Institute of Technology, funded by the National Aeronautics and Space Administration.

Additional details concerning the association procedure can be found in D'Abrusco, R. et al. 2012 ApJ, 748, 68; Massaro, F. et al. 2012 ApJ (http://arxiv.org/abs/1203.1330); Massaro, F., et al. 2012 ApJ in press (http://arxiv.org/abs/1203.4230).