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 J2037.0-2826

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J2037.0-2826 Swift-XRT detections in the field for 4FGL J2037.0-2826

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 20 36 37.60 -28 30 24.87 4.48 (8.4 ± 1.1) x 10-3 71 7.705 7.579
2 20 36 31.09 -28 35 00.52 5.53 (2.2 ± 0.6) x 10-3 19 3.720 3.647
3 20 37 06.04 -28 27 51.62 5.76 (1.8 ± 0.6) x 10-3 22 3.014 3.078

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 37 14.51 -28 28 18.97 5.64 (1.7 ± 0.6) x 10-3 26 3.437 2.925
2 20 36 20.55 -28 36 59.71 5.96 (1.3 ± 0.5) x 10-3 14 2.806 2.750

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J2037.0-2826 Swift-XRT image with known radio, optical and UV sources for 4FGL J2037.0-2826

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 [MML2015] 5BZQ J2036-2830 20 36 37.78 -28 30 26.64 6.50
2 1RXS J203631.8-282820 20 36 31.80 -28 28 19.92 6.64 ROSAT
2RXS J203631.6-282820 20 36 31.68 -28 28 20.64 6.67 ROSAT
2RXS J203631.6-282820 20 36 31.68 -28 28 20.64 6.67 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 NVSS J203646-282701 20 36 46.61 -28 27 01.08 3.17 NVSS
GLEAM J203646-282651 20 36 46.30 -28 26 51.00 3.19 GLEAMEGCAT
TGSSADR J203646.4-282702 20 36 46.51 -28 27 02.88 3.19 GMRTAS150M
2 NVSS J203644-282502 20 36 44.40 -28 25 01.92 3.78 NVSS
3 NVSS J203641-282533 20 36 41.21 -28 25 32.88 4.32 NVSS
QORG J203646.2-282249 20 36 46.20 -28 22 49.08 4.70 QORGCAT
4 NVSS J203646-282246 20 36 46.39 -28 22 45.84 4.71 NVSS
5 SPASS J203635-282907 20 36 35.71 -28 29 07.08 6.16 SPASS2P3GH
6 NVSS J203725-282317 20 37 25.51 -28 23 17.88 6.25 NVSS
CGRaBS J2036-2830 20 36 37.80 -28 30 25.92 6.49 VERONCAT
7 NVSS J203637-283025 20 36 37.80 -28 30 25.92 6.50 NVSS
CRATES J203637-283022 20 36 37.80 -28 30 25.92 6.50 CRATES
TGSSADR J203637.7-283025 20 36 37.70 -28 30 25.92 6.50 GMRTAS150M
[MML2015] 5BZQ J2036-2830 20 36 37.80 -28 30 25.92 6.50 ROMABZCAT
QORG J203637.8-283027 20 36 37.80 -28 30 27.00 6.50 QORGCAT
CGRaBS J2036-2830 20 36 37.80 -28 30 25.92 6.50 CGRABS
AT20G J203637-283027 20 36 37.80 -28 30 27.00 6.51 AT20G
GLEAM J203637-283025 20 36 37.61 -28 30 24.84 6.52 GLEAMEGCAT
PMN J2036-2830 20 36 37.30 -28 30 21.96 6.54 PMN
GLEAM J203734-282308 20 37 34.01 -28 23 08.88 8.00 GLEAMEGCAT
8 NVSS J203734-282304 20 37 34.10 -28 23 03.84 8.06 NVSS
TGSSADR J203734.4-282303 20 37 34.49 -28 23 03.12 8.13 GMRTAS150M
GLEAM J203730-283216 20 37 30.70 -28 32 16.08 8.91 GLEAMEGCAT
TGSSADR J203730.8-283220 20 37 30.91 -28 32 20.04 8.99 GMRTAS150M
9 NVSS J203730-283223 20 37 30.79 -28 32 22.92 9.01 NVSS
10 PPM 271376 20 36 20.57 -28 29 12.48 9.26 PPM
CD-2816784 20 36 20.52 -28 29 12.48 9.27 ACRS
SAO 189479 20 36 20.52 -28 29 14.64 9.28 SAO
TGSSADR J203727.7-281756 20 37 27.79 -28 17 57.12 10.27 GMRTAS150M
11 NVSS J203727-281756 20 37 27.91 -28 17 56.04 10.29 NVSS
GLEAM J203728-281751 20 37 28.20 -28 17 51.00 10.40 GLEAMEGCAT
12 WDS J20375-2817 20 37 30.00 -28 16 59.88 11.33 WDS
13 SAO 189495 20 37 27.70 -28 16 39.72 11.33 SAO
PPM 271395 20 37 27.74 -28 16 36.84 11.38 PPM
14 SAO 189477 20 36 15.48 -28 33 53.28 12.48 SAO
PPM 271373 20 36 15.38 -28 33 55.44 12.52 PPM
15 NVSS J203613-281814 20 36 13.30 -28 18 15.12 13.15 NVSS
TGSSADR J203613.0-281814 20 36 13.10 -28 18 14.04 13.20 GMRTAS150M
GLEAM J203611-281811 20 36 12.00 -28 18 11.88 13.42 GLEAMEGCAT
16 NVSS J203607-281900 20 36 07.80 -28 19 00.12 13.71 NVSS
17 NVSS J203625-281428 20 36 25.10 -28 14 27.96 14.17 NVSS

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