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 J1250.9-4943

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J1250.9-4943 Swift-XRT detections in the field for 4FGL J1250.9-4943

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 12 50 20.82 -49 51 44.53 4.80 (1.3 ± 0.2) x 10-2 49 6.579 6.489
2 12 50 58.49 -49 44 43.52 5.44 (6.3 ± 1.4) x 10-3 30 4.690 4.501
3 12 51 29.67 -49 44 00.95 6.12 (4.2 ± 1.1) x 10-3 19 3.618 3.827
4 12 51 51.93 -49 36 33.18 6.12 (4.0 ± 1.1) x 10-3 18 3.882 3.713

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 12 50 15.52 -49 38 32.28 7.97 (2.3 ± 0.8) x 10-3 10 2.540 2.790
2 12 51 31.38 -49 39 33.48 6.65 (2.2 ± 0.9) x 10-3 12 2.715 2.544
3 12 50 28.10 -49 41 46.85 6.65 (2.1 ± 0.9) x 10-3 12 2.503 2.353

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J1250.9-4943 Swift-XRT image with known radio, optical and UV sources for 4FGL J1250.9-4943

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 1RXS J125028.6-494605 12 50 28.61 -49 46 05.16 5.05 ROSAT
2 1RXS J125020.5-495144 12 50 20.50 -49 51 43.92 10.12 ROSAT
2RXS J125020.4-495143 12 50 20.45 -49 51 43.56 10.12 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 SUMSS J125058-494447 12 50 58.90 -49 44 47.04 1.73 SUMSS
TGSSADR J125059.1-494446 12 50 59.11 -49 44 45.96 1.74 GMRTAS150M
QORG J125059.0-494448 12 50 58.99 -49 44 48.12 1.75 QORGCAT
2 PMN J1250-4945 12 50 56.11 -49 45 20.16 2.13 PMN
3 WDS J12506-4943 12 50 36.00 -49 43 00.12 2.98 WDS
4 WDS J12507-4941 12 50 42.00 -49 40 59.88 2.99 WDS
5 TGSSADR J125037.2-494022 12 50 37.30 -49 40 23.16 3.96 GMRTAS150M
6 WDS J12505-4938 12 50 30.00 -49 37 59.88 6.54 WDS
7 CD-49 7416 12 50 18.67 -49 51 01.08 9.70 ACRS
PPM 317851 12 50 18.65 -49 51 01.08 9.70 PPM
SAO 223696 12 50 18.70 -49 51 02.52 9.71 SAO
8 HIP 62657 12 50 19.75 -49 51 48.96 10.25 HIPPARCOS
PPM 317853 12 50 19.73 -49 51 48.96 10.26 PPM
HD 111520 12 50 19.73 -49 51 49.32 10.26 HIC
CD-49 7417 12 50 19.70 -49 51 49.68 10.26 ACRS
SAO 223697 12 50 19.58 -49 51 49.32 10.27 SAO
WDS J12503-4952 12 50 18.00 -49 52 00.12 10.56 WDS
9 WDS J12512-4933 12 51 12.00 -49 32 60.00 10.61 WDS
10 TGSSADR J125138.7-495146 12 51 38.71 -49 51 47.16 11.16 GMRTAS150M
SUMSS J125138-495148 12 51 38.59 -49 51 48.96 11.17 SUMSS
11 HIP 62666 12 50 27.43 -49 32 46.68 11.31 HIPPARCOS
CD -48 7706 12 50 27.36 -49 32 46.68 11.32 HIC
12 WDS J12499-4952 12 49 54.00 -49 52 00.12 13.12 WDS
HIP 62621 12 49 54.58 -49 52 08.04 13.14 HIPPARCOS
PPM 317846 12 49 54.58 -49 52 08.04 13.14 PPM
HD 111461 12 49 54.60 -49 52 08.40 13.14 HIC
CD-49 7411 12 49 54.58 -49 52 08.40 13.14 ACRS
SAO 223694 12 49 54.48 -49 52 08.76 13.16 SAO
13 SUMSS J124944-495244 12 49 43.99 -49 52 45.12 14.82 SUMSS
TGSSADR J124944.1-495246 12 49 44.11 -49 52 46.92 14.83 GMRTAS150M
GLEAM J124944-495246 12 49 43.99 -49 52 45.84 14.84 GLEAMEGCAT

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