2015/02/09 by Masaki Nishimichi, Takeshi Okuda, Nishimichi, Masaki +7
Physics and Astronomy · #Astrophysical Phenomena and Observations #Astrophysics and Cosmic Phenomena #FOS: Physical sciences #Gamma-ray bursts and supernovae #High Energy Astrophysical Phenomena (astro-ph.HE) #astro-ph.HE
paper · pdf · doi:10.48550/arxiv.1502.02380
2014 Fermi Symposium proceedings - eConf C14102.1 (4 pages, 3 figures)
arxiv created 2015/02/09 · openalex publication_date 2015/02/09 · arxiv updated 2015/02/10 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
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 \citeATel. 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 \citeNolan2012. Fermi J1049.7+0435 is at Galactic coordinates (l,b) = (245.34^∘, 53.27^∘), (αJ2000, δJ2000) = (162.43^∘, 4.60^∘). Fermi J1103.2+1145 is at Galactic coordinates (l,b) = (238.85^∘, 60.33^∘), (αJ2000,δJ2000)= (165.81^∘, 11.75^∘). 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. These identification have been supoorted by snap-shot observations with the Australia Telescope Compact Array at several epochs in 2013 and 2014,