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 J1948.9+3414

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J1948.9+3414 Swift-XRT detections in the field for 4FGL J1948.9+3414

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 19 49 16.82 +34 10 46.07 4.31 (1.7 ± 0.2) x 10-2 71 8.091 7.156
2 19 49 16.35 +34 09 54.15 4.35 (4.8 ± 1.4) x 10-3 29 4.609 3.321

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 48 20.25 +34 16 58.24 7.27 (2.5 ± 0.9) x 10-3 10 2.486 2.820
2 19 48 24.96 +34 10 12.63 5.89 (2.1 ± 0.9) x 10-3 14 2.578 2.370
3 19 49 19.45 +34 21 00.62 7.09 (1.7 ± 0.8) x 10-3 9 2.323 2.234

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J1948.9+3414 Swift-XRT image with known radio, optical and UV sources for 4FGL J1948.9+3414

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 2RXS J194916.8+341039 19 49 16.87 +34 10 39.72 5.97 ROSAT
1RXS J194917.1+341042 19 49 17.11 +34 10 42.60 5.98 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 NVSS J194857+341418 19 48 57.50 +34 14 17.88 0.67 NVSS
2 CGPS J194848+341301 19 48 49.01 +34 13 01.92 1.74 CGPSNGPCAT
3 CGPS J194903+341347 19 49 03.29 +34 13 46.92 1.96 CGPSNGPCAT
4 NVSS J194859+341054 19 48 59.81 +34 10 54.84 3.64 NVSS
CGPS J194859+341049 19 48 59.59 +34 10 49.08 3.72 CGPSNGPCAT
5 V1449 Cyg 19 49 16.63 +34 10 49.80 5.82 GCVS
CV J194916.5+341048 19 49 16.58 +34 10 48.72 5.83 CVCAT
6 WDS J19484+3415 19 48 24.00 +34 15 00.00 6.29 WDS
CGPS J194906+342013 19 49 06.31 +34 20 12.84 6.34 CGPSNGPCAT
7 NVSS J194906+342012 19 49 06.60 +34 20 12.84 6.36 NVSS
8 CGPS J194829+340944 19 48 29.81 +34 09 45.00 6.86 CGPSNGPCAT
9 NVSS J194826+341847 19 48 26.90 +34 18 47.16 7.18 NVSS
CGPS J194818+342021 19 48 18.00 +34 20 21.12 9.59 CGPSNGPCAT
10 NVSS J194817+342031 19 48 17.81 +34 20 30.84 9.72 NVSS
11 WDS J19482+3419 19 48 12.00 +34 19 00.12 9.88 WDS
12 NVSS J194814+342235 19 48 14.50 +34 22 36.12 11.62 NVSS
13 WDS J19497+3421 19 49 42.00 +34 21 00.00 11.87 WDS
14 CGPS J194814+342307 19 48 14.59 +34 23 07.08 11.99 CGPSNGPCAT
15 NVSS J194945+342016 19 49 45.70 +34 20 16.08 12.15 NVSS
CGPS J194947+342017 19 49 47.11 +34 20 17.88 12.41 CGPSNGPCAT
16 SAO 68875 19 48 01.03 +34 07 03.72 13.23 SAO
PPM 83574 19 48 00.84 +34 07 04.44 13.25 PPM
BD+33 3599 19 48 00.82 +34 07 04.80 13.25 ACRS
CGPS J194804+340548 19 48 04.51 +34 05 48.12 13.40 CGPSNGPCAT
17 NVSS J194804+340544 19 48 04.20 +34 05 44.88 13.49 NVSS
18 CGPS J194816+342607 19 48 16.51 +34 26 07.08 14.10 CGPSNGPCAT

Penn State University Goddard Space Flight Center Swift