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 J1951.0+2523

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J1951.0+2523 Swift-XRT detections in the field for 4FGL J1951.0+2523

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 19 51 50.10 +25 19 53.87 5.96 (2.3 ± 0.6) x 10-3 17 3.725 3.628

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 19 50 30.92 +25 25 39.99 6.31 (1.5 ± 0.5) x 10-3 15 2.751 2.995
2 19 50 27.30 +25 21 11.76 6.12 (1.1 ± 0.5) x 10-3 12 2.781 2.486
3 19 50 59.04 +25 08 05.30 8.27 (9 ± 4) x 10-4 7 2.269 2.378

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J1951.0+2523 Swift-XRT image with known radio, optical and UV sources for 4FGL J1951.0+2523

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 1RXS J195148.4+251958 19 51 48.41 +25 19 58.44 10.57 ROSAT
2RXS J195148.7+251956 19 51 48.72 +25 19 56.64 10.65 ROSAT
2 2RXS J195151.2+253329 19 51 51.19 +25 33 29.16 14.42 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 NVSS J195042+252534 19 50 42.50 +25 25 33.96 5.33 NVSS
2 HD 339127 19 51 20.57 +25 19 11.28 5.74 HDEC
3 WDS J19515+2522 19 51 30.00 +25 22 00.12 5.99 WDS
4 NVSS J195112+251747 19 51 12.91 +25 17 47.04 6.15 NVSS
SAO 87826 19 51 30.77 +25 21 37.44 6.26 SAO
PPM 109872 19 51 30.91 +25 21 38.52 6.29 PPM
HD 339126 19 51 30.91 +25 21 38.52 6.29 HDEC
BD+24 3911 19 51 30.94 +25 21 38.88 6.29 ACRS
5 HD 339022 19 50 50.57 +25 18 08.64 6.34 HDEC
PPM 109845 19 50 50.57 +25 18 08.64 6.34 PPM
BD+24 3906 19 50 50.54 +25 18 07.92 6.35 ACRS
6 HD 339008 19 50 46.92 +25 29 31.20 7.10 HDEC
7 BD+24 3905 19 50 41.23 +25 18 26.64 7.39 ACRS
HD 339021 19 50 41.21 +25 18 25.92 7.41 HDEC
PPM 109836 19 50 41.21 +25 18 25.92 7.41 PPM
8 Czernik 41 19 51 01.01 +25 16 06.96 7.57 OPENCLUST
9 CGPS J195137+252448 19 51 37.80 +25 24 47.88 7.60 CGPSNGPCAT
10 BD+24 3908 19 50 57.89 +25 15 49.32 7.96 ACRS
PPM 109851 19 50 57.86 +25 15 48.96 7.97 PPM
HD 339023 19 50 57.86 +25 15 48.96 7.97 HDEC
SAO 87812 19 50 57.98 +25 15 47.88 7.98 SAO
11 NVSS J195048+253044 19 50 48.19 +25 30 45.00 8.00 NVSS
CGPS J195047+253048 19 50 48.00 +25 30 47.88 8.07 CGPSNGPCAT
12 HD 339007 19 51 19.30 +25 31 09.84 8.23 HDEC
13 PPM 109841 19 50 44.14 +25 16 42.96 8.32 PPM
NN 19 50 44.11 +25 16 42.96 8.32 ACRS
14 [WBH2005] G62.071-0.517 19 50 27.91 +25 25 06.96 8.40 WBHGP20CM
15 394- 10 19 51 31.54 +25 29 44.52 8.63 NLTT
16 CGPS J195144+252233 19 51 44.81 +25 22 33.96 9.17 CGPSNGPCAT
17 NVSS J195040+251532 19 50 40.39 +25 15 32.04 9.77 NVSS
CGPS J195039+251524 19 50 40.01 +25 15 24.84 9.92 CGPSNGPCAT
18 WSRTGP 1948+2507 19 50 40.10 +25 14 54.96 10.32 WSRTGP
19 HD 339006 19 51 02.83 +25 34 16.32 10.64 HDEC
20 CGPS J195146+251822 19 51 46.39 +25 18 21.96 10.82 CGPSNGPCAT
21 SAO 87833 19 51 49.92 +25 19 55.56 10.91 SAO
PPM 109884 19 51 50.04 +25 19 56.28 10.93 PPM
HD 339125 19 51 50.04 +25 19 56.28 10.93 HDEC
BD+24 3912 19 51 50.04 +25 19 56.28 10.93 ACRS
22 HD 339020 19 50 16.03 +25 17 09.60 12.73 HDEC
PPM 109821 19 50 16.03 +25 17 09.60 12.73 PPM
BD+24 3903 19 50 16.01 +25 17 09.96 12.73 ACRS
SAO 87792 19 50 15.96 +25 17 09.96 12.74 SAO
23 NVSS J195024+253325 19 50 24.79 +25 33 25.92 13.27 NVSS

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