2009/08/11 by N. Mirabal, Mirabal, N.
Engineering · Physics and Astronomy · #Astronomical Observations and Instrumentation #Astrophysical Phenomena and Observations #FOS: Physical sciences #High Energy Astrophysical Phenomena (astro-ph.HE) #Pulsars and Gravitational Waves Research #astro-ph.HE
paper · pdf · doi:10.48550/arxiv.0908.1389
20 pages, 1 figure, 16 tables, version including Swift images of the Fermi error contours can be found at http://www.gae.ucm.es/~mirabal/Unidentified.html
openalex publication_date 2009/08/11 · arxiv created 2009/08/12 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We present X-ray point source catalogs obtained from archival Swift observations that have partially or fully covered the 95% confidence error contour of unidentified Fermi sources. In total, 21 out of 37 unidentified Fermi sources have been observed by the X-Ray Telescope (XRT) on board the Swift observatory. Basic properties such as position, positional errors, count rates, and hardness ratios are derived for a total of 18 X-ray point sources found in the sample. From these detections, we discuss potential counterparts to 0FGL J0910.2-5044, 0FGL J1045.6-5937, 0FGL J1115.8-6108, 0FGL J1231.5-1410, 0FGL J1326.6-5302, 0FGL J1604.0-4904, and 0FGL J1805.3-2138. The catalog will assist observers planning future programs to identify 0FGL sources without obvious counterparts.