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 J0916.9+7756

Field

Detected Excesses

Swift-XRT image of the field for 4FGL J0916.9+7756 Swift-XRT detections in the field for 4FGL J0916.9+7756

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 09 17 17.63 +78 00 54.07 6.65 (7 ± 2) x 10-3 16 3.695 3.659
2 09 17 04.99 +77 50 18.63 6.65 (5 ± 2) x 10-3 14 3.354 3.313

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 09 16 29.35 +77 55 30.54 6.93 (4 ± 2) x 10-3 14 2.968 2.700

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 4FGL J0916.9+7756 Swift-XRT image with known radio, optical and UV sources for 4FGL J0916.9+7756

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 1RXS J091649.7+775023 09 16 49.70 +77 50 22.92 5.78 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 NVSS J091628+775530 09 16 28.99 +77 55 31.08 1.62 NVSS
TGSSADR J091743.4+775447 09 17 43.51 +77 54 47.16 2.77 GMRTAS150M
WN 0911.7+7807 09 17 44.21 +77 54 51.84 2.77 WENSS
2 NVSS J091744+775447 09 17 44.21 +77 54 47.88 2.80 NVSS
WN 0912.9+7810 09 18 57.41 +77 58 13.08 6.60 WENSS
TGSSADR J091902.2+775815 09 19 02.30 +77 58 14.88 6.85 GMRTAS150M
3 NVSS J091904+775816 09 19 04.30 +77 58 17.04 6.96 NVSS
WN 0911.2+7815 09 17 21.79 +78 03 24.84 7.38 WENSS
TGSSADR J091723.1+780325 09 17 23.11 +78 03 24.84 7.40 GMRTAS150M
QORG J091724.6+780327 09 17 24.60 +78 03 27.00 7.44 QORGCAT
4 NVSS J091724+780329 09 17 24.31 +78 03 29.16 7.48 NVSS
5 WDS J09150+7802 09 15 00.00 +78 01 59.88 8.46 WDS
TGSSADR J091412.8+775351 09 14 12.89 +77 53 51.00 8.91 GMRTAS150M
6 NVSS J091412+775347 09 14 13.01 +77 53 48.12 8.92 NVSS
WN 0908.0+7805 09 14 10.70 +77 53 34.08 9.10 WENSS
7 SAO 6811 09 19 52.32 +77 58 05.52 9.33 SAO
BD+78 303 09 19 52.42 +77 58 04.44 9.34 ACRS
HIP 45760 09 19 52.49 +77 58 04.44 9.34 HIPPARCOS
PPM 7341 09 19 52.51 +77 58 04.44 9.34 PPM
HD 79262 09 19 52.49 +77 58 04.44 9.34 HIC
8 ZW 0908+7812 09 14 06.72 +77 59 38.40 9.56 ZWCLUSTERS
9 NVSS J091627+780537 09 16 27.60 +78 05 36.96 9.60 NVSS
QORG J091628.6+780542 09 16 28.61 +78 05 42.00 9.67 QORGCAT
10 SAO 6774 09 13 46.92 +78 01 44.04 11.38 SAO
PPM 7301 09 13 46.15 +78 01 59.88 11.54 PPM
NN 09 13 45.98 +78 02 00.96 11.56 ACRS
11 NVSS J091350+780326 09 13 50.40 +78 03 27.00 12.16 NVSS
WN 0907.0+7802 09 13 08.71 +77 50 02.04 13.47 WENSS
WE 0907+78W1 09 13 08.81 +77 49 59.16 13.49 DIXON
12 NVSS J091307+774957 09 13 07.90 +77 49 58.08 13.54 NVSS
QORG J091308.0+774957 09 13 07.99 +77 49 57.00 13.54 QORGCAT
13 SAO 6779 09 14 39.02 +78 07 47.64 13.68 SAO
PPM 7304 09 14 39.26 +78 07 48.72 13.69 PPM
BD+78 300 09 14 39.26 +78 07 49.08 13.69 ACRS
14 PGC 2775500 09 20 37.61 +78 04 00.84 13.89 PGC2003
15 NVSS J091430+774432 09 14 30.00 +77 44 33.00 13.96 NVSS

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