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 J1919.1+2354

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J1919.1+2354 Swift-XRT detections in the field for 4FGL J1919.1+2354

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 19 19 30.16 +23 47 37.29 6.65 (2.7 ± 0.8) x 10-3 15 3.332 3.386
2 19 19 33.19 +24 00 38.35 6.31 (1.9 ± 0.6) x 10-3 15 3.216 3.020

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 19 00.69 +24 06 22.83 5.76 (1.5 ± 0.6) x 10-3 12 2.693 2.545
2 19 19 31.23 +24 04 44.90 6.31 (1.4 ± 0.5) x 10-3 12 2.970 2.526
3 19 18 35.30 +24 04 54.48 6.31 (1.3 ± 0.5) x 10-3 14 2.408 2.503

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J1919.1+2354 Swift-XRT image with known radio, optical and UV sources for 4FGL J1919.1+2354

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 1RXS J191928.3+240047 19 19 28.30 +24 00 47.16 8.15 ROSAT
2RXS J191928.3+240047 19 19 28.32 +24 00 47.88 8.17 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 NVSS J191931+235404 19 19 31.10 +23 54 03.96 5.40 NVSS
2 HD 344105 19 19 04.90 +23 59 36.24 5.47 HDEC
CGPS J191931+235404 19 19 31.39 +23 54 05.04 5.48 CGPSNGPCAT
WDS J19191+2400 19 19 06.00 +24 00 00.00 5.85 WDS
3 NVSS J191934+235602 19 19 34.61 +23 56 02.04 6.48 NVSS
CGPS J191847+235912 19 18 47.50 +23 59 12.12 6.80 CGPSNGPCAT
TGSSADR J191847.9+235927 19 18 47.90 +23 59 27.96 6.93 GMRTAS150M
4 NVSS J191847+235926 19 18 47.81 +23 59 26.88 6.94 NVSS
5 SAO 87056 19 18 37.80 +23 51 22.32 7.34 SAO
HIP 94889 19 18 37.78 +23 51 23.04 7.34 HIPPARCOS
PPM 108753 19 18 37.75 +23 51 23.04 7.34 PPM
HD 181211 19 18 37.75 +23 51 23.04 7.35 HIC
BD+23 3621 19 18 37.75 +23 51 22.68 7.35 ACRS
6 NVSS J191839+235948 19 18 39.50 +23 59 48.84 8.52 NVSS
7 NVSS J191849+240225 19 18 49.10 +24 02 26.16 9.28 NVSS
8 HD 344104 19 18 45.96 +24 02 26.16 9.63 HDEC
9 NVSS J191953+235518 19 19 53.90 +23 55 18.84 10.67 NVSS
CGPS J191848+234405 19 18 48.10 +23 44 06.00 11.00 CGPSNGPCAT
PGC 2815197 19 19 55.20 +23 55 41.88 11.01 PGC2003
10 NVSS J191848+234402 19 18 48.41 +23 44 02.04 11.03 NVSS
11 HD 344103 19 18 49.08 +24 05 29.76 12.09 HDEC
12 HD 344106 19 19 55.56 +23 59 30.48 12.22 HDEC
13 PGC 2815162 19 18 28.61 +23 45 11.88 12.63 PGC2003
14 NVSS J191823+234528 19 18 23.11 +23 45 28.08 13.36 NVSS
15 HD 344194 19 19 54.29 +23 45 58.68 13.47 HDEC
16 NVSS J191825+240559 19 18 25.39 +24 06 00.00 15.24 NVSS
17 NVSS J191818+234233 19 18 18.10 +23 42 33.84 16.19 NVSS
TGSSADR J191818.2+234231 19 18 18.31 +23 42 32.04 16.19 GMRTAS150M

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