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 J2039.4-3616

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J2039.4-3616 Swift-XRT detections in the field for 4FGL J2039.4-3616

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 20 38 49.16 -36 02 23.60 6.12 (4.8 ± 1.4) x 10-3 15 3.521 3.480

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 38 31.96 -36 09 55.26 7.48 (3.6 ± 1.2) x 10-3 10 2.839 2.972
2 20 38 21.75 -36 03 34.19 7.09 (2.8 ± 1.2) x 10-3 9 2.476 2.392

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J2039.4-3616 Swift-XRT image with known radio, optical and UV sources for 4FGL J2039.4-3616

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 2RXS J203852.0-362708 20 38 52.08 -36 27 08.28 12.76 ROSAT
2RXS J203852.0-362708 20 38 52.08 -36 27 08.28 12.76 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 PPM 751704 20 39 22.46 -36 15 24.84 1.05 PPM
2 NVSS J203911-362034 20 39 11.59 -36 20 34.08 5.11 NVSS
3 HIP 101908 20 39 04.42 -36 21 21.24 6.60 HIPPARCOS
CD-3614306 20 39 04.42 -36 21 21.96 6.61 ACRS
PPM 300442 20 39 04.42 -36 21 21.96 6.61 PPM
HD 196497 20 39 04.42 -36 21 22.32 6.61 HIC
SAO 212313 20 39 04.44 -36 21 22.68 6.61 SAO
4 PGC 638341 20 39 56.59 -36 18 25.92 6.65 PGC2003
5 PGC 640051 20 39 16.39 -36 09 51.84 6.67 PGC2003
6 PGC 639573 20 38 58.01 -36 12 16.92 6.82 PGC2003
7 NVSS J203848-361043 20 38 48.91 -36 10 42.96 9.23 NVSS
8 PGC 637135 20 39 45.89 -36 24 34.92 9.27 PGC2003
9 PGC 637017 20 39 49.01 -36 25 06.96 10.03 PGC2003
10 NVSS J203947-360630 20 39 47.90 -36 06 30.96 10.77 NVSS
11 PGC 639389 20 40 21.31 -36 13 09.84 11.70 PGC2003
12 HD 196475 20 38 52.70 -36 27 00.36 12.58 HIC
HIP 101889 20 38 52.68 -36 27 00.36 12.58 HIPPARCOS
PPM 300436 20 38 52.66 -36 27 00.36 12.58 PPM
CD-3614304 20 38 52.58 -36 27 00.36 12.59 ACRS
SAO 212311 20 38 52.51 -36 27 00.72 12.60 SAO
13 NVSS J203836-360824 20 38 36.50 -36 08 25.08 12.61 NVSS
14 PPM 751712 20 40 08.33 -36 25 34.68 12.70 PPM
15 PMN J2040-3625 20 40 17.30 -36 25 05.16 13.67 PMN
TGSSADR J204017.6-362538 20 40 17.71 -36 25 39.00 14.09 GMRTAS150M
16 PPM 751696 20 38 37.37 -36 06 01.44 14.11 PPM
AT20G J204017-362542 20 40 17.71 -36 25 41.88 14.13 AT20G
SUMSS J204017-362542 20 40 17.71 -36 25 41.88 14.13 SUMSS
17 NVSS J204017-362544 20 40 17.71 -36 25 44.04 14.15 NVSS
CRATES J204017-362505 20 40 17.71 -36 25 45.12 14.16 CRATES
18 SPASS J204016-362704 20 40 16.61 -36 27 05.04 14.93 SPASS2P3GH

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