Fermi Gamma-ray Space Telescope

Fermi LAT detection of two high Galactic latitude gamma-ray sources, Fermi J1049.7+0435 and J1103.2+1145

Masaki Mori
Masaki Nishimichi, Takeshi Okuda, Philip G. Edwards, Jamie Stevens

Abstract:

During a search for gamma-ray emission from NGC 3628 (Arp 317), two new unidentified gamma-ray sources, Fermi J1049.7+0435 and J1103.2+1145 have been discovered. The detections are made in data from the Large Area Telescope (LAT), on board the Fermi Gamma-ray Space Telescope, in the 100,MeV to 300,GeV band during the period between 2008 August 5 and 2012 October 27. Neither is coincident with any source listed in the 2FGL catalogue. Fermi J1049.7+0435 is at Galactic coordinates $(l,b) = (245.34^circ , 53.27^circ )$, $(alpha_{J2000} , delta_{J2000}) = (162.43^circ, 4.60^circ)$. Fermi J1103.2+1145 is at Galactic coordinates $(l,b) = (238.85^circ, 60.33^circ)$, $(alpha_{J2000},delta_{J2000})= (165.81^circ , 11.75^circ)$. Possible radio counterparts are found for both sources, which show flat radio spectra similar to other Fermi LAT detected AGN, and their identifications are discussed.