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.

2FGL J0227.7+2249

Field

Detected Excesses

Swift-XRT image of the field for 2FGL J0227.7+2249 Swift-XRT detections in the field for 2FGL J0227.7+2249

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 02 28 28.64 +22 48 17.28 5.82 (3.7 ± 1.0) x 10-3 17 3.480 3.511

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 02 27 50.97 +22 41 28.32 7.27 (2.1 ± 0.8) x 10-3 11 2.667 2.769
2 02 27 44.33 +22 48 39.05 6.93 (2.3 ± 0.9) x 10-3 11 2.551 2.654
3 02 27 13.71 +22 52 56.95 6.65 (1.8 ± 0.8) x 10-3 10 2.498 2.448
4 02 27 06.88 +22 43 34.50 6.93 (1.6 ± 0.7) x 10-3 10 2.684 2.286

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 2FGL J0227.7+2249 Swift-XRT image with known radio, optical and UV sources for 2FGL J0227.7+2249


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 J022748+224943 02 27 49.01 +22 49 42.96 0.34 NVSS
TGSSADR J022744.3+224834 02 27 44.40 +22 48 34.92 1.21 GMRTAS150M
2 NVSS J022744+224834 02 27 44.30 +22 48 34.92 1.22 NVSS
[SPT2015] VLA J0227+2248 02 27 44.40 +22 48 33.84 1.22 FER2FUSRID
GB6 J0227+2248 02 27 44.81 +22 48 21.96 1.32 GB6
GLEAM J022742+224838 02 27 43.01 +22 48 38.16 1.41 GLEAMEGCAT
3 NVSS J022754+224959 02 27 54.00 +22 49 59.88 1.50 NVSS
TGSSADR J022754.3+224959 02 27 54.31 +22 49 59.16 1.57 GMRTAS150M
GLEAM J022755+224950 02 27 55.30 +22 49 50.16 1.75 GLEAMEGCAT
TGSSADR J022758.4+224931 02 27 58.39 +22 49 32.16 2.42 GMRTAS150M
4 NVSS J022758+224930 02 27 58.70 +22 49 31.08 2.49 NVSS
5 NVSS J022740+225312 02 27 40.20 +22 53 12.12 4.13 NVSS
TGSSADR J022740.3+225317 02 27 40.39 +22 53 17.88 4.19 GMRTAS150M
6 NVSS J022810+224859 02 28 10.61 +22 49 00.12 5.24 NVSS
[SPT2015] VLA J0228+2249 02 28 10.70 +22 49 00.12 5.26 FER2FUSRID
7 NVSS J022802+224243 02 28 02.21 +22 42 43.92 7.51 NVSS
TGSSADR J022702.0+224534 02 27 02.11 +22 45 34.92 11.27 GMRTAS150M
8 NVSS J022701+224537 02 27 01.90 +22 45 37.08 11.28 NVSS
GLEAM J022701+224522 02 27 01.80 +22 45 23.04 11.39 GLEAMEGCAT
9 NVSS J022813+223847 02 28 13.20 +22 38 47.04 12.17 NVSS
10 NVSS J022836+225444 02 28 37.01 +22 54 45.00 12.46 NVSS
11 NVSS J022658+225937 02 26 58.39 +22 59 36.96 15.27 NVSS

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