Swift-XRT Survey of Fermi Unassociated Sources

These results are part of the Swift program to follow-up Fermi unassociated sources in an attempt to find X-ray counterparts to the unidentified gamma-ray sources. As new observations are performed, these pages will be updated in nearly real time. Please use these results as a guide and proceed with caution when using them in a publication since they are the result of an automated analysis.

When using these data and results in publications, please reference M.C. Stroh & A.D. Falcone 2013, ApJS, 207, 28; arXiv: 1305.4949 for a description of many of the analysis techniques used to reduce these data (note: a more detailed paper describing the complete data set and analysis is forthcoming). Please contact Abe Falcone and Michael Stroh at unassociated@swift.psu.edu if you have any questions about the program or the analysis, or to simply to let us know that you've made use of these data.
Caution: For completeness, sources are listed if the "detection" exceeds 3 sigma. The significances and images are shown so you can make more stringent significance cuts, if desired.

3FGL J1748.5-3912

Field

Detected Excesses
Swift-XRT image of the field for 3FGL J1748.5-3912 Swift-XRT detections in the field for 3FGL J1748.5-3912

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 17 49 17.61 -39 09 44.52 6.12 (3.1 ± 0.8) x 10-3 18 3.037 3.769
2 17 48 03.28 -39 05 39.44 5.64 (2.6 ± 0.8) x 10-3 17 3.415 3.276
3 17 48 51.61 -39 25 45.02 6.31 (1.9 ± 0.7) x 10-3 12 2.899 3.000

Rejected Excesses (Due to Overlaps or SNR(Sosta) < 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 17 47 48.44 -39 18 03.41 5.20 (2.5 ± 0.8) x 10-3 20 3.217 2.945
2 17 48 40.03 -39 17 43.51 5.20 (1.4 ± 0.7) x 10-3 28 2.784 2.185
3 17 47 59.37 -39 19 34.76 5.17 (1.4 ± 0.8) x 10-3 15 2.475 1.894
4 17 48 23.23 -39 18 45.73 4.97 (1.3 ± 0.7) x 10-3 28 2.600 1.888

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 3FGL J1748.5-3912 Swift-XRT image with known radio, optical and UV sources for 3FGL J1748.5-3912


No known X-ray or gamma ray sources found.

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 NVSS J174830-391728 17 48 30.41 -39 17 27.96 5.10 NVSS
MGPS J174830-391730 17 48 30.10 -39 17 30.12 5.13 MGPS2
2 NVSS J174807-391537 17 48 07.80 -39 15 38.16 5.62 NVSS
3 NVSS J174751-391117 17 47 51.31 -39 11 17.16 7.86 NVSS
4 [SPT2015] ATCA J1748-3921 17 48 52.99 -39 21 16.92 9.82 FER2FUSRID
[PME2013] J1748-3921 17 48 52.99 -39 21 16.92 9.82 AT2FGLUS
5 NVSS J174927-391007 17 49 27.91 -39 10 06.96 11.15 NVSS
6 NVSS J174745-392353 17 47 45.91 -39 23 53.88 14.51 NVSS

Penn State University Goddard Space Flight Center Swift