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 J2228.5-1633

Field

Detected Excesses
Swift-XRT image of the field for 1FGL J2228.5-1633 Swift-XRT detections in the field for 1FGL J2228.5-1633

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 22 28 16.15 -16 23 43.42 3.85 (9.1 ± 0.6) x 10-2 234 14.820 14.590
2 22 27 49.60 -16 28 09.30 7.09 (4.3 ± 1.4) x 10-3 11 3.049 3.041

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 22 28 04.28 -16 36 20.53 6.41 (3.7 ± 1.4) x 10-3 11 2.950 2.620

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 1FGL J2228.5-1633 Swift-XRT image with known radio, optical and UV sources for 1FGL J2228.5-1633

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 SWIFT J222804.4-163620 22 28 04.46 -16 36 20.88 7.01 SWIFT
2 SWIFT J222816.4-162341 22 28 16.42 -16 23 41.28 10.82 SWIFT
3 SWIFT J222749.5-162809 22 27 49.54 -16 28 09.12 11.63 SWIFT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
[SPT2015] ATCA J2228-1636 22 28 30.19 -16 36 42.84 2.89 FER2FUSRID
[PME2013] J2228-1636 22 28 30.10 -16 36 42.84 2.89 AT2FGLUS
1 NVSS J222830-163643 22 28 30.10 -16 36 42.84 2.89 NVSS
WISH B2225.8-1652 22 28 30.60 -16 36 45.00 2.90 WISH
[PME2013] J2228-1630 22 28 45.29 -16 30 21.96 4.76 AT2FGLUS
[SPT2015] ATCA J2228-1630 22 28 45.29 -16 30 21.96 4.76 FER2FUSRID
2 NVSS J222845-163016 22 28 45.41 -16 30 15.84 4.85 NVSS
3 NVSS J222830-164020 22 28 30.89 -16 40 19.92 6.48 NVSS
4 NVSS J222828-162604 22 28 28.30 -16 26 03.84 7.84 NVSS
TGSSADR J222828.3-162603 22 28 28.39 -16 26 03.84 7.84 GMRTAS150M
WISH B2225.7-1641 22 28 28.20 -16 25 59.88 7.91 WISH
GLEAM J222828-162558 22 28 28.51 -16 25 59.16 7.92 GLEAMEGCAT
WISH B2226.0-1641 22 28 42.70 -16 26 18.96 7.99 WISH
5 NVSS J222842-162619 22 28 42.79 -16 26 18.96 7.99 NVSS
6 NVSS J222820-164217 22 28 20.30 -16 42 16.92 8.87 NVSS
GLEAM J222809-162613 22 28 10.01 -16 26 12.84 9.26 GLEAMEGCAT
7 NVSS J222809-162613 22 28 09.10 -16 26 12.84 9.37 NVSS
8 NVSS J222831-164324 22 28 31.49 -16 43 23.88 9.55 NVSS
TGSSADR J222857.8-164115 22 28 57.91 -16 41 15.00 9.68 GMRTAS150M
9 NVSS J222857-164130 22 28 57.31 -16 41 30.12 9.78 NVSS
GLEAM J222857-164129 22 28 57.41 -16 41 29.04 9.79 GLEAMEGCAT
WISH B2226.2-1656 22 28 57.31 -16 41 33.00 9.81 WISH
VLSSr J222857.2-164136 22 28 57.31 -16 41 35.88 9.86 VLSSR
TGSSADR J222856.6-164146 22 28 56.71 -16 41 45.96 9.90 GMRTAS150M
10 WISH B2225.4-1640 22 28 08.40 -16 24 51.12 10.62 WISH
11 NVSS J222816-162347 22 28 16.30 -16 23 47.04 10.74 NVSS
TGSSADR J222807.6-162239 22 28 07.70 -16 22 40.08 12.60 GMRTAS150M
12 NVSS J222807-162238 22 28 07.30 -16 22 39.00 12.66 NVSS
GLEAM J222807-162229 22 28 07.39 -16 22 28.92 12.79 GLEAMEGCAT
13 NVSS J222919-164256 22 29 19.30 -16 42 56.16 14.55 NVSS
14 WISH B2226.6-1658 22 29 19.01 -16 43 27.12 14.83 WISH
15 NVSS J222918-164417 22 29 18.70 -16 44 17.16 15.32 NVSS
WISH B2226.6-1637 22 29 17.81 -16 22 10.92 16.07 WISH

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