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.

4FGL J1517.7-4446

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J1517.7-4446 Swift-XRT detections in the field for 4FGL J1517.7-4446

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 15 17 27.45 -44 42 52.32 4.97 (9 ± 2) x 10-3 37 5.237 4.999
2 15 18 10.34 -44 47 35.55 5.64 (6 ± 2) x 10-3 22 4.073 4.005

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 15 18 01.38 -44 44 24.12 6.52 (3.0 ± 1.2) x 10-3 13 2.495 2.527

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J1517.7-4446 Swift-XRT image with known radio, optical and UV sources for 4FGL J1517.7-4446

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 1RXS J151800.4-444439 15 18 00.41 -44 44 39.48 3.69 ROSAT
2RXS J151800.4-444440 15 18 00.48 -44 44 40.56 3.69 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 TGSSADR J151749.4-444616 15 17 49.51 -44 46 17.04 1.24 GMRTAS150M
SUMSS J151749-444615 15 17 49.61 -44 46 14.88 1.26 SUMSS
2 SAO 225630 15 18 10.78 -44 47 36.24 5.08 SAO
CD-4410003 15 18 10.82 -44 47 36.60 5.09 ACRS
PPM 320437 15 18 10.85 -44 47 36.60 5.09 PPM
HIP 74878 15 18 10.85 -44 47 36.60 5.09 HIPPARCOS
HD 135709 15 18 10.87 -44 47 36.96 5.10 HIC
3 PPM 761013 15 17 12.34 -44 46 44.04 5.39 PPM
4 TGSSADR J151753.1-445420 15 17 53.21 -44 54 20.16 7.96 GMRTAS150M
5 PGC 3085628 15 17 14.59 -44 52 57.00 8.07 PGC2003
6 PPM 320441 15 18 24.36 -44 50 41.28 8.44 PPM
SAO 225635 15 18 24.36 -44 50 41.64 8.44 SAO
7 PPM 761024 15 17 49.13 -44 56 59.64 10.45 PPM
8 PPM 761031 15 18 12.05 -44 58 06.24 12.62 PPM

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