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 J2303.7+5555

Field

Detected Excesses
Swift-XRT image of the field for 3FGL J2303.7+5555 Swift-XRT detections in the field for 3FGL J2303.7+5555

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 23 03 51.70 +55 56 17.98 4.03 (4.7 ± 0.4) x 10-2 148 10.700 11.380

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 23 04 30.74 +55 53 50.45 5.49 (3.5 ± 1.3) x 10-3 20 2.627 2.738
2 23 04 39.93 +56 03 29.06 5.49 (5 ± 2) x 10-3 20 2.464 2.597
3 23 04 37.81 +55 47 31.01 6.21 (3.5 ± 1.4) x 10-3 11 2.444 2.579
4 23 03 30.65 +55 58 54.42 5.82 (3.2 ± 1.2) x 10-3 17 2.421 2.546
5 23 04 22.36 +55 53 05.61 6.04 (3.1 ± 1.3) x 10-3 12 2.460 2.365

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 3FGL J2303.7+5555 Swift-XRT image with known radio, optical and UV sources for 3FGL J2303.7+5555

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 2RXS J230344.1+554915 23 03 44.11 +55 49 15.96 5.76 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 NVSS J230352+555609 23 03 52.51 +55 56 08.88 1.42 NVSS
2 NVSS J230401+555902 23 04 01.99 +55 59 02.04 4.57 NVSS
3 NVSS J230321+555031 23 03 21.41 +55 50 30.84 5.71 NVSS
TGSSADR J230320.8+555028 23 03 20.90 +55 50 29.04 5.79 GMRTAS150M
WN 2301.1+5534 23 03 21.31 +55 50 26.16 5.79 WENSS
WN 2301.7+5530 23 03 53.59 +55 47 00.96 8.05 WENSS
TGSSADR J230353.4+554700 23 03 53.40 +55 46 59.88 8.06 GMRTAS150M
4 NVSS J230353+554659 23 03 53.40 +55 46 59.16 8.08 NVSS
5 NVSS J230227+555334 23 02 27.31 +55 53 34.08 11.21 NVSS
6 NVSS J230232+554919 23 02 32.21 +55 49 19.92 11.88 NVSS

Penn State University Goddard Space Flight Center Swift