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 J1627.7-5749

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J1627.7-5749 Swift-XRT detections in the field for 4FGL J1627.7-5749

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 16 29 45.35 -57 45 18.40 6.78 (8 ± 2) x 10-3 17 3.723 4.359
2 16 29 05.24 -57 31 48.27 5.64 (6 ± 2) x 10-3 16 3.244 3.633

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 16 27 34.45 -57 42 11.35 5.08 (5 ± 2) x 10-3 19 3.302 2.961
2 16 28 30.63 -57 50 07.05 6.12 (4 ± 2) x 10-3 14 2.665 2.667
3 16 27 54.78 -57 43 38.46 5.49 (3.5 ± 1.4) x 10-3 17 2.414 2.512
4 16 28 20.00 -57 50 15.33 5.64 (3.2 ± 1.3) x 10-3 18 2.469 2.500
5 16 27 05.46 -57 36 35.10 5.96 (2.8 ± 1.2) x 10-3 12 2.382 2.302
6 16 29 10.85 -57 34 01.58 5.35 (3.3 ± 1.4) x 10-3 10 2.461 2.293

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J1627.7-5749 Swift-XRT image with known radio, optical and UV sources for 4FGL J1627.7-5749

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 2RXS J162736.2-573810 16 27 36.24 -57 38 10.68 11.70 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 MGPS J162716-575236 16 27 16.80 -57 52 36.12 4.46 MGPS2
2 MGPS J162717-575427 16 27 17.59 -57 54 27.00 5.73 MGPS2
3 PPM 772403 16 27 49.56 -57 56 22.92 6.60 PPM
4 MGPS J162714-574227 16 27 14.30 -57 42 27.00 8.33 MGPS2
5 NS Nor 16 27 54.22 -57 41 33.00 8.42 GCVS
6 202-127 16 28 40.73 -57 45 37.08 8.76 NLTT
7 BPM 24171 16 28 39.12 -57 44 59.64 8.90 HIC
HIP 80706 16 28 39.41 -57 44 58.92 8.94 HIPPARCOS
8 CD-57 6409 16 28 43.08 -57 54 18.72 9.14 ACRS
PPM 345088 16 28 43.08 -57 54 18.72 9.14 PPM
SAO 243850 16 28 43.15 -57 54 18.72 9.15 SAO
WDS J16287-5745 16 28 42.00 -57 45 00.00 9.22 WDS
9 WDS J16266-5753 16 26 36.00 -57 52 59.88 9.47 WDS
10 PPM 772387 16 26 19.27 -57 46 44.04 11.59 PPM
11 WDS J16263-5754 16 26 18.00 -57 53 60.00 12.06 WDS
12 MGPS J162630-580032 16 26 30.10 -58 00 33.12 14.44 MGPS2
PMN J1626-5800 16 26 28.39 -58 00 23.04 14.48 PMN
13 MGPS J162620-574025 16 26 20.50 -57 40 26.04 14.49 MGPS2
14 MGPS J162625-580020 16 26 25.39 -58 00 20.88 14.72 MGPS2
ATPMN J162625.3-580023 16 26 25.30 -58 00 24.12 14.77 ATPMNCAT
1622-578 16 26 26.50 -58 00 36.00 14.81 MRC

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