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 J1900.4-4941

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J1900.4-4941 Swift-XRT detections in the field for 4FGL J1900.4-4941

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 19 01 25.10 -49 48 41.26 7.71 (5.8 ± 1.4) x 10-3 11 2.791 4.243
2 19 00 09.41 -49 30 09.08 6.04 (5 ± 2) x 10-3 17 3.316 3.337

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 19 00 12.35 -49 32 46.61 5.64 (2.7 ± 1.2) x 10-3 13 2.931 2.292

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J1900.4-4941 Swift-XRT image with known radio, optical and UV sources for 4FGL J1900.4-4941


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 PPM 764054 18 59 43.61 -49 40 18.84 7.40 PPM
2 SUMSS J185942-494058 18 59 42.41 -49 40 59.16 7.55 SUMSS
3 GLEAM J190015-494904 19 00 16.01 -49 49 04.08 8.17 GLEAMEGCAT
4 SUMSS J190006-494854 19 00 06.10 -49 48 54.00 8.58 SUMSS
5 SUMSS J190018-494937 19 00 18.10 -49 49 36.84 8.62 SUMSS
6 SUMSS J190120-494635 19 01 20.59 -49 46 35.04 9.94 SUMSS
7 GLEAM J190131-494104 19 01 31.39 -49 41 03.84 10.08 GLEAMEGCAT
TGSSADR J190132.5-494107 19 01 32.50 -49 41 08.16 10.27 GMRTAS150M
SUMSS J190132-494109 19 01 32.59 -49 41 08.88 10.28 SUMSS
8 CD-5012263 19 00 11.93 -49 51 08.64 10.34 ACRS
PPM 324668 19 00 11.90 -49 51 09.00 10.35 PPM
SAO 229426 19 00 11.71 -49 51 08.64 10.35 SAO
9 WDS J19004-4930 19 00 24.00 -49 30 00.00 11.21 WDS
10 SUMSS J190015-495309 19 00 15.60 -49 53 09.96 12.18 SUMSS
11 PPM 324643 18 59 16.03 -49 30 11.16 16.15 PPM
CD-4912440 18 59 16.06 -49 30 10.44 16.15 ACRS
SAO 229415 18 59 15.91 -49 30 10.44 16.18 SAO

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