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 J2222.9+1507

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J2222.9+1507 Swift-XRT detections in the field for 4FGL J2222.9+1507

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 22 22 54.07 +15 10 55.44 5.17 (8 ± 2) x 10-3 37 5.503 5.578
2 22 22 39.10 +15 10 54.09 5.40 (6.2 ± 1.4) x 10-3 29 4.440 4.409
3 22 22 26.54 +15 05 22.45 5.44 (3.5 ± 1.1) x 10-3 23 3.878 3.363
4 22 23 01.04 +15 05 39.27 5.70 (3.5 ± 1.1) x 10-3 26 3.350 3.306

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 23 00.74 +15 07 46.93 6.41 (2.5 ± 0.9) x 10-3 17 2.981 2.740
2 22 22 09.94 +15 14 13.21 6.52 (2.4 ± 0.9) x 10-3 11 2.796 2.600

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J2222.9+1507 Swift-XRT image with known radio, optical and UV sources for 4FGL J2222.9+1507

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 2RXS J222252.4+151107 22 22 52.44 +15 11 07.08 3.64 ROSAT
2RXS J222252.4+151107 22 22 52.44 +15 11 07.08 3.64 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 Unknown 22 22 56.26 +15 06 47.16 0.79 NLTT
2 NVSS J222301+150852 22 23 01.30 +15 08 52.08 1.97 NVSS
3 PCCS2 217 G078.01-34.50 22 23 10.30 +15 08 07.08 3.67 PCCS217GHZ
4 NVSS J222316+150736 22 23 16.90 +15 07 36.12 5.20 NVSS
TGSSADR J222316.9+150735 22 23 16.99 +15 07 35.04 5.23 GMRTAS150M
5 PCCS2 545 G078.07-34.49 22 23 17.59 +15 10 05.88 5.95 PCCS545GHZ
6 NVSS J222307+150109 22 23 07.39 +15 01 09.84 7.02 NVSS
7 NVSS J222300+151540 22 23 00.19 +15 15 39.96 8.21 NVSS
8 NVSS J222217+150612 22 22 17.50 +15 06 12.96 9.22 NVSS
TGSSADR J222217.3+150610 22 22 17.40 +15 06 10.08 9.26 GMRTAS150M
9 NVSS J222242+145816 22 22 42.91 +14 58 15.96 9.75 NVSS
TGSSADR J222242.7+145816 22 22 42.70 +14 58 17.04 9.76 GMRTAS150M
TGSSADR J222333.7+150331 22 23 33.79 +15 03 30.96 10.12 GMRTAS150M
10 NVSS J222333+150331 22 23 33.91 +15 03 30.96 10.14 NVSS
11 NVSS J222336+150952 22 23 36.41 +15 09 52.92 10.18 NVSS
TGSSADR J222336.4+150952 22 23 36.41 +15 09 51.84 10.19 GMRTAS150M
QORG J222314.6+151653 22 23 14.59 +15 16 53.04 10.43 QORGCAT
12 NVSS J222314+151659 22 23 14.59 +15 16 59.16 10.53 NVSS
13 WDS J22227+1457 22 22 42.00 +14 56 60.00 11.03 WDS
TGSSADR J222206.0+150606 22 22 06.00 +15 06 06.84 11.98 GMRTAS150M
14 PGC 1481173 22 23 29.21 +15 18 33.84 13.72 PGC2003
15 FIRST J222343.1+145914 22 23 43.10 +14 59 13.92 14.22 FIRST

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