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 J2025.1-2858

Field

Detected Excesses
Swift-XRT image of the field for 3FGL J2025.1-2858 Swift-XRT detections in the field for 3FGL J2025.1-2858

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 20 25 45.19 -29 02 04.22 6.04 (5 ± 2) x 10-3 17 3.416 3.352
2 20 24 42.57 -29 04 45.00 6.04 (5 ± 2) x 10-3 18 3.084 3.065

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 20 25 26.63 -29 05 20.27 7.27 (3.0 ± 1.2) x 10-3 9 2.583 2.453
2 20 24 29.12 -29 04 36.27 6.78 (2.2 ± 1.1) x 10-3 10 2.452 2.049

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 3FGL J2025.1-2858 Swift-XRT image with known radio, optical and UV sources for 3FGL J2025.1-2858


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 J202514-285537 20 25 14.71 -28 55 37.92 3.46 NVSS
2 NVSS J202515-285418 20 25 15.41 -28 54 18.00 4.70 NVSS
3 NVSS J202450-290252 20 24 50.40 -29 02 53.16 5.54 NVSS
4 NVSS J202553-285813 20 25 53.59 -28 58 14.16 10.31 NVSS
TGSSADR J202553.7-285820 20 25 53.71 -28 58 19.92 10.34 GMRTAS150M
5 NVSS J202436-290718 20 24 36.41 -29 07 18.12 10.92 NVSS
6 NVSS J202556-285959 20 25 56.71 -29 00 00.00 11.09 NVSS
7 NVSS J202549-285231 20 25 49.99 -28 52 32.16 11.28 NVSS
TGSSADR J202550.1-285229 20 25 50.11 -28 52 30.00 11.33 GMRTAS150M
8 NVSS J202419-290819 20 24 19.01 -29 08 20.04 14.22 NVSS
TGSSADR J202419.1-290825 20 24 19.20 -29 08 25.08 14.27 GMRTAS150M
GLEAM J202418-290836 20 24 18.50 -29 08 36.96 14.51 GLEAMEGCAT
9 NVSS J202417-291024 20 24 17.69 -29 10 23.88 15.91 NVSS

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