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 J1228.0-6918

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J1228.0-6918 Swift-XRT detections in the field for 4FGL J1228.0-6918

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 12 27 10.85 -69 20 19.94 4.64 (1.2 ± 0.2) x 10-2 57 6.722 6.754
2 12 29 55.40 -69 16 09.51 5.44 (8 ± 2) x 10-3 24 4.380 4.244
3 12 27 07.70 -69 22 51.77 5.44 (4.0 ± 1.0) x 10-3 24 4.042 4.003
4 12 26 36.64 -69 22 12.27 5.89 (3.2 ± 0.9) x 10-3 21 3.259 3.447

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 28 28.75 -69 13 46.89 5.31 (1.3 ± 0.7) x 10-3 14 2.482 1.840

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J1228.0-6918 Swift-XRT image with known radio, optical and UV sources for 4FGL J1228.0-6918

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 2RXS J122958.7-691618 12 29 58.70 -69 16 18.48 10.68 ROSAT
1RXS J122959.1-691617 12 29 59.09 -69 16 17.40 10.72 ROSAT
2RXP J122959.0-691549 12 29 58.97 -69 15 48.60 10.83 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 PGC 3074374 12 27 32.21 -69 15 00.00 4.52 PGC2003
2 CD-68 1079 12 28 38.90 -69 12 42.12 6.90 ACRS
HIP 60882 12 28 39.00 -69 12 41.40 6.91 HIPPARCOS
PPM 359437 12 28 38.98 -69 12 41.40 6.91 PPM
CPC 21.1 2255 12 28 39.05 -69 12 41.40 6.92 HIC
3 PPM 359446 12 29 20.74 -69 14 10.68 8.40 PPM
4 PMN J1227-6910 12 27 22.20 -69 10 27.12 8.97 PMN
5 MC4 1224-688 12 27 06.60 -69 10 24.96 9.61 DIXON
6 PPM 779016 12 28 48.89 -69 27 24.12 9.64 PPM
MGPS J122706-691023 12 27 06.19 -69 10 23.88 9.65 MGPS2
7 MGPS J122611-692308 12 26 11.69 -69 23 08.88 10.60 MGPS2
8 PPM 779013 12 28 32.47 -69 08 04.20 11.02 PPM
9 MGPS J122556-692343 12 25 56.21 -69 23 43.08 12.08 MGPS2

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