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.

1FGL J1627.8-3204

Field

Detected Excesses

Swift-XRT image of the field for 1FGL J1627.8-3204 Swift-XRT detections in the field for 1FGL J1627.8-3204

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 16 27 57.75 -32 06 01.03 4.71 (2.2 ± 0.6) x 10-3 50 3.795 3.869
2 16 28 07.28 -32 05 47.59 4.81 (1.7 ± 0.5) x 10-3 32 3.451 3.277
3 16 27 50.11 -32 09 21.57 4.92 (1.7 ± 0.5) x 10-3 34 2.987 3.229
4 16 27 49.79 -31 55 57.35 4.86 (1.5 ± 0.5) x 10-3 28 3.027 3.017

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 02.30 -32 04 31.53 5.24 (1.2 ± 0.4) x 10-3 21 2.864 2.940
2 16 28 01.87 -31 57 41.34 4.76 (1.4 ± 0.5) x 10-3 30 3.160 2.849
3 16 28 25.03 -32 02 13.43 4.76 (1.2 ± 0.5) x 10-3 27 2.553 2.579
4 16 27 39.89 -32 10 42.68 4.81 (8 ± 4) x 10-4 34 2.749 2.089
5 16 28 38.14 -32 02 51.03 4.86 (7 ± 4) x 10-4 26 2.650 1.846
6 16 28 27.12 -32 01 31.15 4.86 (6 ± 4) x 10-4 23 2.903 1.796
7 16 27 50.51 -32 14 19.90 4.61 (7 ± 4) x 10-4 29 2.576 1.778

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 1FGL J1627.8-3204 Swift-XRT image with known radio, optical and UV sources for 1FGL J1627.8-3204


No known X-ray or gamma ray sources found.

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 NVSS J162808-320259 16 28 08.21 -32 02 60.00 4.52 NVSS
2 NVSS J162712-320435 16 27 12.19 -32 04 35.04 7.64 NVSS
3 NVSS J162818-315912 16 28 18.31 -31 59 12.84 8.34 NVSS
4 NVSS J162827-320201 16 28 27.00 -32 02 02.04 8.61 NVSS
5 SUMSS J162818-315446 16 28 18.79 -31 54 46.08 11.77 SUMSS
6 NVSS J162826-321326 16 28 26.40 -32 13 26.04 11.99 NVSS

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