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.

3FGL J1628.1+0254

Field

Detected Excesses
Swift-XRT image of the field for 3FGL J1628.1+0254 Swift-XRT detections in the field for 3FGL J1628.1+0254

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 16 27 53.76 +02 51 07.25 4.33 (1.2 ± 0.2) x 10-2 79 7.786 7.803
2 16 28 15.97 +02 56 50.70 5.53 (2.6 ± 0.8) x 10-3 22 3.004 3.135

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 28 09.41 +02 48 50.84 5.02 (2.1 ± 0.8) x 10-3 25 2.810 2.646
2 16 27 32.72 +02 52 11.13 5.40 (1.5 ± 0.7) x 10-3 18 2.506 2.303
3 16 28 30.10 +02 54 49.02 5.24 (1.5 ± 0.7) x 10-3 21 3.133 2.246

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 3FGL J1628.1+0254 Swift-XRT image with known radio, optical and UV sources for 3FGL J1628.1+0254


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
TGSSADR J162807.8+025123 16 28 07.90 +02 51 23.04 3.21 GMRTAS150M
1 NVSS J162807+025122 16 28 07.99 +02 51 21.96 3.22 NVSS
2 NVSS J162756+025744 16 27 56.69 +02 57 43.92 4.62 NVSS
3 1625+0256 16 28 01.01 +02 50 15.00 4.87 NORTH6CM
TGSSADR J162810.0+024931 16 28 10.01 +02 49 31.08 5.03 GMRTAS150M
4 NVSS J162810+024931 16 28 10.01 +02 49 31.08 5.03 NVSS
5 NVSS J162754+025109 16 27 54.19 +02 51 09.00 5.21 NVSS
TGSSADR J162754.1+025109 16 27 54.19 +02 51 10.08 5.22 GMRTAS150M
6 GB6 J1627+0251 16 27 51.70 +02 51 11.16 5.69 GB6
7 PMN J1627+0250 16 27 54.31 +02 50 17.16 5.81 PMN
8 NVSS J162812+024757 16 28 12.19 +02 47 57.84 6.61 NVSS
9 NVSS J162816+024742 16 28 16.30 +02 47 43.08 7.01 NVSS
10 NVSS J162749+024921 16 27 49.90 +02 49 22.08 7.22 NVSS
TGSSADR J162724.4+025532 16 27 24.50 +02 55 32.16 11.43 GMRTAS150M
11 NVSS J162724+025533 16 27 24.41 +02 55 33.96 11.46 NVSS
12 NVSS J162838+024410 16 28 38.50 +02 44 09.96 12.57 NVSS
TGSSADR J162838.4+024408 16 28 38.40 +02 44 08.88 12.59 GMRTAS150M
13 NVSS J162854+030250 16 28 54.19 +03 02 51.00 13.79 NVSS

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