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 J1220.1-5558

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J1220.1-5558 Swift-XRT detections in the field for 4FGL J1220.1-5558

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 12 20 36.85 -55 54 53.33 6.41 (6 ± 2) x 10-3 19 3.453 4.040
2 12 21 11.18 -56 06 31.32 5.82 (7 ± 2) x 10-3 21 4.293 3.909
3 12 20 25.67 -56 04 41.06 5.64 (6 ± 2) x 10-3 19 3.829 3.568

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 20 18.21 -55 50 35.71 7.27 (3.2 ± 1.2) x 10-3 11 2.847 2.697
2 12 20 39.36 -56 01 26.63 7.27 (1.9 ± 0.9) x 10-3 10 2.435 2.107

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J1220.1-5558 Swift-XRT image with known radio, optical and UV sources for 4FGL J1220.1-5558

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 2RXS J122027.5-560550 12 20 27.55 -56 05 50.64 8.18 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 PGC 3079414 12 20 02.11 -55 58 15.96 0.85 PGC2003
2 PGC 404383 12 19 51.79 -55 57 52.92 2.29 PGC2003
3 PPM 340885 12 19 46.61 -55 59 13.92 3.20 PPM
4 WDS J12208-5559 12 20 48.00 -55 58 59.88 5.65 WDS
5 MGPS J122026-560442 12 20 26.30 -56 04 41.88 7.05 MGPS2
ATPMN J122026.3-560442 12 20 26.40 -56 04 41.88 7.06 ATPMNCAT
AT20G J122026-560443 12 20 25.99 -56 04 44.04 7.06 AT20G
6 PMN J1220-5604 12 20 30.41 -56 04 41.16 7.26 PMN
PGC 3074290 12 19 16.90 -55 56 03.12 7.46 PGC2003
7 MGPS J121915-555547 12 19 15.70 -55 55 46.92 7.69 MGPS2
8 CD-55 4566 12 20 52.92 -56 02 54.96 7.89 ACRS
PPM 340898 12 20 52.97 -56 02 54.96 7.89 PPM
SAO 239862 12 20 52.92 -56 02 56.04 7.90 SAO
HIP 60216 12 20 53.04 -56 02 54.96 7.90 HIPPARCOS
HD 107375 12 20 53.04 -56 02 54.96 7.90 HIC
9 MGPS J122109-560145 12 21 09.60 -56 01 45.84 9.33 MGPS2
10 PPM 340899 12 20 53.71 -56 07 53.04 11.65 PPM
CD-55 4567 12 20 53.69 -56 07 53.40 11.65 ACRS
SAO 239863 12 20 53.76 -56 07 55.20 11.68 SAO
WDS J12209-5608 12 20 54.00 -56 07 59.88 11.77 WDS
11 PPM 770215 12 20 36.19 -55 46 50.16 11.96 PPM
12 PGC 3079413 12 18 56.21 -55 47 03.12 14.98 PGC2003
13 SAO 239834 12 18 48.22 -55 46 20.28 16.27 SAO
HIP 60042 12 18 48.10 -55 46 19.20 16.29 HIPPARCOS
CD-55 4544 12 18 48.07 -55 46 18.84 16.29 ACRS
PPM 340871 12 18 48.07 -55 46 18.84 16.30 PPM
HD 107048 12 18 48.05 -55 46 18.84 16.30 HIC

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