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 J0031.0-2327

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J0031.0-2327 Swift-XRT detections in the field for 4FGL J0031.0-2327

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 00 31 20.48 -23 34 02.65 3.71 (4.7 ± 0.3) x 10-2 387 19.970 18.460
2 00 30 40.16 -23 28 19.36 5.14 (2.9 ± 0.7) x 10-3 36 4.754 4.288
3 00 30 32.14 -23 23 23.92 6.31 (1.9 ± 0.5) x 10-3 16 3.113 3.608
4 00 31 11.12 -23 34 23.22 5.44 (1.9 ± 0.6) x 10-3 22 3.497 3.220
5 00 31 29.90 -23 31 03.17 5.59 (1.6 ± 0.5) x 10-3 19 3.114 3.059

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 00 31 07.64 -23 25 04.77 5.28 (1.5 ± 0.5) x 10-3 28 2.828 2.759
2 00 31 08.30 -23 25 07.85 5.31 (1.4 ± 0.5) x 10-3 30 2.718 2.626
3 00 31 16.22 -23 24 56.29 5.53 (1.3 ± 0.5) x 10-3 18 2.928 2.559
4 00 31 22.04 -23 30 23.85 5.59 (1.1 ± 0.5) x 10-3 20 2.879 2.361
5 00 31 12.94 -23 36 58.06 5.89 (1.1 ± 0.5) x 10-3 13 2.444 2.358
6 00 30 41.22 -23 30 09.96 5.64 (8 ± 5) x 10-4 16 2.403 1.892
7 00 31 15.03 -23 33 02.39 5.17 (3 ± 4) x 10-4 22 3.182 0.657

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J0031.0-2327 Swift-XRT image with known radio, optical and UV sources for 4FGL J0031.0-2327

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 2RXS J003124.1-232214 00 31 24.14 -23 22 14.52 7.38 ROSAT
2RXS J003124.1-232214 00 31 24.14 -23 22 14.52 7.38 ROSAT
2 XMMSL2 J003120.5-233358 00 31 20.54 -23 33 57.96 7.81 XMM-NEWTON
XMMSL2 J003120.5-233358 00 31 20.54 -23 33 57.96 7.81 XMM-NEWTON
1RXS J003120.6-233358 00 31 20.59 -23 33 57.96 7.82 ROSAT
1RXS J003120.6-233358 00 31 20.59 -23 33 58.68 7.82 ROSAT
2RXS J003120.5-233401 00 31 20.54 -23 34 01.20 7.86 ROSAT
2RXS J003120.5-233401 00 31 20.54 -23 34 01.20 7.86 ROSAT
6dFGS J0031205-233402 00 31 20.54 -23 34 01.56 7.86 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 SAO 166326 00 31 04.61 -23 29 14.64 1.89 SAO
CD-24 183 00 31 04.73 -23 29 15.00 1.91 ACRS
HIP 2443 00 31 04.75 -23 29 15.00 1.91 HIPPARCOS
PPM 242907 00 31 04.78 -23 29 15.00 1.91 PPM
SAO 166326 00 31 04.73 -23 29 15.72 1.92 HIC
2 NVSS J003047-232759 00 30 48.00 -23 28 00.12 3.15 NVSS
3 PGC 799694 00 30 55.01 -23 32 56.04 5.65 PGC2003
4 PGC 198161 00 31 28.01 -23 28 06.96 6.10 PGC2003
MWACS J0030.6-2323 00 30 39.00 -23 23 17.88 6.64 MWACS
5 NVSS J003038-232305 00 30 39.00 -23 23 04.92 6.79 NVSS
WISH B0028.1-2339 00 30 38.90 -23 23 04.92 6.81 WISH
TGSSADR J003038.8-232305 00 30 38.90 -23 23 04.92 6.81 GMRTAS150M
GLEAM J003039-232300 00 30 39.10 -23 22 59.88 6.83 GLEAMEGCAT
6 PGC 800074 00 31 28.90 -23 30 42.84 7.06 PGC2003
7 PGC 801740 00 31 21.00 -23 21 33.12 7.43 PGC2003
8 NVSS J003120-233401 00 31 20.40 -23 34 00.84 7.83 NVSS
QORG J003120.5-233401 00 31 20.50 -23 34 00.84 7.85 QORGCAT
9 SAO 166321 00 30 31.97 -23 23 15.72 7.99 SAO
PPM 242900 00 30 31.94 -23 23 15.36 8.00 PPM
CD-24 182 00 30 31.94 -23 23 15.36 8.00 ACRS
10 PPM 242918 00 31 40.82 -23 24 38.52 9.45 PPM
11 PGC 801658 00 30 27.79 -23 22 00.84 9.48 PGC2003
WISH B0029.0-2337 00 31 35.90 -23 20 43.08 10.39 WISH
12 NVSS J003135-232033 00 31 35.81 -23 20 33.00 10.47 NVSS
TGSSADR J003135.7-232032 00 31 35.81 -23 20 33.00 10.48 GMRTAS150M
GLEAM J003135-232033 00 31 35.90 -23 20 34.08 10.49 GLEAMEGCAT
13 PGC 802060 00 31 37.20 -23 19 50.88 11.19 PGC2003
14 CD-24 188 00 31 49.01 -23 31 25.32 11.57 ACRS
PPM 242921 00 31 49.06 -23 31 24.96 11.58 PPM
SAO 166334 00 31 49.01 -23 31 27.48 11.59 SAO
15 PGC 801877 00 31 44.21 -23 20 45.96 11.87 PGC2003
16 NVSS J003040-233852 00 30 40.80 -23 38 53.16 12.35 NVSS
TGSSADR J003040.8-233854 00 30 40.80 -23 38 54.96 12.37 GMRTAS150M
GLEAM J003039-233850 00 30 39.70 -23 38 51.00 12.41 GLEAMEGCAT
WISH B0028.1-2356B 00 30 40.61 -23 38 57.84 12.45 WISH
17 PGC 801498 00 30 10.39 -23 23 00.96 12.55 PGC2003
QORG J003029.6-233914 00 30 29.59 -23 39 14.04 13.84 QORGCAT
18 NVSS J003029-233915 00 30 29.69 -23 39 15.12 13.85 NVSS
19 PGC 798676 00 31 37.20 -23 38 44.16 13.90 PGC2003
ABELL51 00 31 36.00 -23 38 60.00 13.96 ABELL
20 PGC 798552 00 31 36.70 -23 39 23.04 14.37 PGC2003
QORG J003141.5-233845 00 31 41.50 -23 38 44.88 14.52 QORGCAT
GLEAM J003141-233850 00 31 41.21 -23 38 49.92 14.55 GLEAMEGCAT
21 NVSS J003141-233849 00 31 41.40 -23 38 49.92 14.57 NVSS
PGC 133648 00 31 41.90 -23 38 44.88 14.58 PGC2003
WISH B0029.2-2355 00 31 41.90 -23 38 48.12 14.62 WISH

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