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 J1733.4+2235

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J1733.4+2235 Swift-XRT detections in the field for 4FGL J1733.4+2235

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 17 32 51.17 +22 33 21.02 4.92 (1.1 ± 0.2) x 10-2 45 6.309 6.302
2 17 33 30.41 +22 36 12.50 5.53 (7 ± 2) x 10-3 29 4.823 4.704

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 17 33 16.60 +22 38 08.38 6.78 (2.8 ± 1.0) x 10-3 13 2.817 2.722
2 17 33 52.13 +22 38 23.09 7.48 (2.3 ± 0.9) x 10-3 9 2.713 2.653
3 17 33 04.71 +22 48 24.87 7.71 (1.9 ± 0.8) x 10-3 7 2.284 2.387
4 17 33 38.56 +22 50 13.73 7.09 (1.8 ± 0.8) x 10-3 8 2.298 2.294

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J1733.4+2235 Swift-XRT image with known radio, optical and UV sources for 4FGL J1733.4+2235

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 1RXS J173318.6+223903 17 33 18.60 +22 39 03.60 4.57 ROSAT
2 1RXS J173250.4+223320 17 32 50.40 +22 33 20.52 8.97 ROSAT
3 4XMM J173237.4+224540 17 32 37.49 +22 45 40.32 15.82 XMM-NEWTON

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 MITG J1733+2231 17 33 15.29 +22 31 50.16 4.47 MITGB6CM
2 NVSS J173345+223753 17 33 45.50 +22 37 54.12 4.81 NVSS
QORG J173345.5+223754 17 33 45.50 +22 37 54.12 4.81 QORGCAT
3 PGC 1673820 17 33 42.31 +22 39 20.16 5.29 PGC2003
4 V497 Her 17 33 53.76 +22 37 05.52 6.16 GCVS
5 GLEAM J173320+224122 17 33 21.00 +22 41 21.84 6.50 GLEAMEGCAT
6 NVSS J173319+224137 17 33 19.01 +22 41 36.96 6.88 NVSS
TGSSADR J173318.9+224138 17 33 18.91 +22 41 39.12 6.90 GMRTAS150M
7 GB6 J1734+2240 17 34 01.80 +22 40 58.08 9.66 GB6
8 NVSS J173410+223133 17 34 10.20 +22 31 32.88 10.26 NVSS
9 NVSS J173403+224126 17 34 03.60 +22 41 26.16 10.28 NVSS
10 PPM 106072 17 34 19.56 +22 36 10.44 11.83 PPM
11 NVSS J173353+224525 17 33 53.71 +22 45 25.92 11.85 NVSS
NN 17 34 19.63 +22 36 11.88 11.85 ACRS
12 NVSS J173248+222640 17 32 48.00 +22 26 40.92 12.58 NVSS
13 NVSS J173413+222736 17 34 13.51 +22 27 37.08 12.81 NVSS

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