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 J1257.0-6339

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J1257.0-6339 Swift-XRT detections in the field for 4FGL J1257.0-6339


No detected excesses found.

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 57 11.43 -63 27 52.35 6.31 (2.6 ± 0.9) x 10-3 12 2.810 2.883

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J1257.0-6339 Swift-XRT image with known radio, optical and UV sources for 4FGL J1257.0-6339

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 1WGA J1257.6-6339 12 57 41.21 -63 39 31.32 4.29 ROSAT
2 1WGA J1257.7-6338 12 57 43.39 -63 38 31.56 4.61 ROSAT
3 1WGA J1258.6-6339 12 58 36.10 -63 39 18.00 10.38 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 SAO 252107 12 57 46.01 -63 39 24.48 4.83 SAO
CD-62 685 12 57 46.27 -63 39 24.48 4.86 ACRS
Rns 32680 12 57 46.30 -63 39 24.84 4.86 CPSTARS
PPM 359776 12 57 46.32 -63 39 24.48 4.86 PPM
HIP 63260 12 57 46.32 -63 39 24.84 4.86 HIPPARCOS
HD 112459 12 57 46.34 -63 39 24.48 4.86 HIC
2 PMN J1256-6333 12 56 41.81 -63 33 38.88 6.15 PMN
3 MGPS J125804-633832 12 58 04.39 -63 38 33.00 6.92 MGPS2
4 PCCS2 030 G303.46-00.72 12 56 13.30 -63 35 02.04 6.97 PCCS030GHZ
5 TD 303.4-00.8 12 56 02.30 -63 37 14.16 7.01 DIXON
6 PCCS2 070 G303.46-00.71 12 56 12.10 -63 34 18.84 7.54 PCCS070GHZ
7 PCCS2 044 G303.45-00.71 12 56 05.71 -63 34 41.16 7.85 PCCS044GHZ
8 WRA1037 12 58 04.20 -63 45 00.00 8.86 WACKERLING
9 SAO 252094 12 55 44.35 -63 37 06.96 8.96 SAO
PPM 359754 12 55 44.38 -63 37 05.88 8.96 PPM
10 TD 303.5-00.6 12 56 44.50 -63 30 14.04 9.34 DIXON
11 PMN J1257-6329 12 57 13.99 -63 29 47.04 9.66 PMN
12 AG G303.4-0.7 12 55 52.10 -63 32 30.84 10.40 DIXON
13 RZ Cru 12 57 23.93 -63 28 58.08 10.66 GCVS
14 PMN J1255-6335 12 55 26.11 -63 35 27.96 11.39 PMN
15 CD-62 684 12 57 11.09 -63 27 51.84 11.53 ACRS
PPM 359767 12 57 11.11 -63 27 51.84 11.53 PPM
SAO 252103 12 57 10.99 -63 27 51.12 11.54 SAO
16 MGPS J125756-634916 12 57 56.90 -63 49 15.96 11.59 MGPS2
17 MGPS J125849-633506 12 58 49.99 -63 35 06.00 12.67 MGPS2
18 PMN J1257-6351 12 57 59.21 -63 51 15.84 13.46 PMN
19 MGPS J125532-634957 12 55 32.50 -63 49 57.00 14.54 MGPS2
20 MGPS J125840-632721 12 58 40.20 -63 27 21.96 16.19 MGPS2

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