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 J1738.0+0236

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J1738.0+0236 Swift-XRT detections in the field for 4FGL J1738.0+0236

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 17 37 34.89 +02 36 49.02 4.80 (7.5 ± 1.4) x 10-3 43 5.722 5.262

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 17 37 42.96 +02 47 34.96 6.21 (2.3 ± 0.8) x 10-3 14 2.675 2.783
2 17 37 32.37 +02 33 08.07 5.53 (2.0 ± 0.8) x 10-3 14 2.623 2.407

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J1738.0+0236 Swift-XRT image with known radio, optical and UV sources for 4FGL J1738.0+0236


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
GLEAM J173800+023610 17 38 00.91 +02 36 11.16 0.54 GLEAMEGCAT
1 NVSS J173800+023606 17 38 00.91 +02 36 06.12 0.61 NVSS
TGSSADR J173800.9+023605 17 38 01.01 +02 36 06.12 0.62 GMRTAS150M
TXS 1735+026 17 37 36.10 +02 36 20.16 6.37 TEXAS
TGSSADR J173735.9+023622 17 37 36.00 +02 36 21.96 6.39 GMRTAS150M
2 NVSS J173735+023623 17 37 35.90 +02 36 24.12 6.41 NVSS
VLSSr J173735.6+023643 17 37 35.71 +02 36 42.84 6.47 VLSSR
MITG J1737+0236 17 37 35.71 +02 36 11.16 6.48 MITGB6CM
3 NVSS J173741+023237 17 37 41.30 +02 32 36.96 6.50 NVSS
PKS J1737+0236 17 37 35.21 +02 36 47.16 6.58 PKSCAT90
GLEAM J173735+023636 17 37 35.21 +02 36 37.08 6.59 GLEAMEGCAT
1735+026 17 37 34.80 +02 36 37.08 6.67 MRC
4 PMN J1737+0236 17 37 34.80 +02 36 55.08 6.69 PMN
GB6 J1737+0236 17 37 34.70 +02 36 30.96 6.71 GB6
1735+0238 17 37 34.61 +02 36 16.92 6.73 NORTH6CM
QORG J173734.0+023643 17 37 34.01 +02 36 42.84 6.88 QORGCAT
PKS1735+026 17 37 32.81 +02 36 52.92 7.18 DIXON
5 NVSS J173732+023716 17 37 32.71 +02 37 15.96 7.24 NVSS
TGSSADR J173732.5+023717 17 37 32.59 +02 37 18.12 7.26 GMRTAS150M
6 NVSS J173831+023228 17 38 31.61 +02 32 27.96 8.61 NVSS
TGSSADR J173750.3+022826 17 37 50.30 +02 28 26.04 8.72 GMRTAS150M
7 NVSS J173750+022816 17 37 50.30 +02 28 17.04 8.88 NVSS
8 NVSS J173815+024536 17 38 15.50 +02 45 36.00 9.56 NVSS
GLEAM J173826+024655 17 38 26.11 +02 46 54.84 11.92 GLEAMEGCAT
9 NVSS J173826+024700 17 38 26.59 +02 47 00.96 12.06 NVSS
TGSSADR J173826.6+024700 17 38 26.71 +02 46 59.88 12.07 GMRTAS150M
10 PGC 1236955 17 38 33.10 +02 46 12.00 12.34 PGC2003
11 PPM 164307 17 37 16.68 +02 42 04.68 12.43 PPM
BD+02 3365 17 37 16.68 +02 42 05.40 12.44 ACRS
12 TXS 1735+028 17 38 30.41 +02 47 58.92 13.39 TEXAS
13 V791 Oph 17 37 25.90 +02 26 00.96 13.91 GCVS
14 NVSS J173722+024650 17 37 22.70 +02 46 50.16 14.04 NVSS
15 GB6 J1738+0248 17 38 34.70 +02 48 33.84 14.47 GB6
16 NVSS J173845+022555 17 38 45.10 +02 25 54.84 15.31 NVSS

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