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.

3FGL J0855.4+7142

Field

Detected Excesses
Swift-XRT image of the field for 3FGL J0855.4+7142 Swift-XRT detections in the field for 3FGL J0855.4+7142

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 08 56 54.63 +71 46 22.28 4.11 (1.9 ± 0.2) x 10-2 120 10.260 10.240
2 08 55 34.89 +71 34 10.55 8.62 (3.7 ± 0.9) x 10-3 8 2.383 4.123

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 08 55 23.20 +71 48 34.84 5.82 (1.8 ± 0.7) x 10-3 17 3.318 2.709

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 3FGL J0855.4+7142 Swift-XRT image with known radio, optical and UV sources for 3FGL J0855.4+7142

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 2RXS J085655.5+714624 08 56 55.56 +71 46 24.24 7.86 ROSAT
2RXS J085655.5+714624 08 56 55.56 +71 46 24.24 7.86 ROSAT
1RXS J085655.8+714622 08 56 55.80 +71 46 22.44 7.87 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 NVSS J085545+714346 08 55 45.91 +71 43 45.84 1.82 NVSS
2 NVSS J085623+714340 08 56 23.40 +71 43 41.16 4.54 NVSS
3 PCCS2 070 G142.03+35.28 08 56 34.10 +71 47 08.16 6.86 PCCS070GHZ
PCCS2 100 G142.04+35.30 08 56 51.00 +71 46 05.88 7.41 PCCS100GHZ
WN 0851.9+7157A 08 56 54.19 +71 46 23.16 7.76 WENSS
TGSSADR J085654.5+714624 08 56 54.60 +71 46 24.96 7.80 GMRTAS150M
CRATES J085655+714627 08 56 54.91 +71 46 23.88 7.81 CRATES
4 NVSS J085654+714624 08 56 54.79 +71 46 24.96 7.81 NVSS
0851+7158 08 56 54.00 +71 46 32.16 7.81 NORTH6CM
0851+7158 08 56 54.00 +71 46 32.16 7.81 NORTH20CM
PCCS2 217 G142.03+35.31 08 56 55.90 +71 46 14.88 7.82 PCCS217GHZ
WN 0851.9+7157 08 56 55.61 +71 46 18.12 7.82 WENSS
GB6 J0856+7146 08 56 55.30 +71 46 27.12 7.87 GB6
5 NVSS J085656+713823 08 56 56.30 +71 38 22.92 8.27 NVSS
TGSSADR J085656.2+713822 08 56 56.30 +71 38 22.92 8.28 GMRTAS150M
PCCS2 143 G142.02+35.31 08 57 00.00 +71 46 41.88 8.31 PCCS143GHZ
WN 0851.9+7149 08 56 57.19 +71 38 18.96 8.37 WENSS
WN 0851.9+7157B 08 57 12.00 +71 45 42.12 8.76 WENSS
6 NVSS J085711+714607 08 57 11.30 +71 46 06.96 8.86 NVSS
7 NVSS J085548+715145 08 55 48.79 +71 51 45.00 9.18 NVSS
7C 085119.0+714446 08 56 18.91 +71 33 16.92 10.31 UC7C151MHZ
8 NVSS J085620+713319 08 56 20.40 +71 33 20.16 10.32 NVSS
TGSSADR J085620.1+713318 08 56 20.21 +71 33 19.08 10.32 GMRTAS150M
WN 0851.3+7144 08 56 20.40 +71 33 18.00 10.34 WENSS
VLSSr J085620.1+713313 08 56 20.11 +71 33 14.04 10.39 VLSSR
9 8C 0851+717 08 56 21.79 +71 32 20.04 11.28 RRS8C38MHZ
10 NVSS J085318+714835 08 53 18.60 +71 48 34.92 11.61 NVSS
11 PCCS2 545 G142.33+35.38 08 56 40.80 +71 31 00.84 13.10 PCCS545GHZ
12 NVSS J085317+715106 08 53 17.30 +71 51 06.84 13.14 NVSS
PCCS2 857 G142.34+35.38 08 56 41.71 +71 30 45.00 13.37 PCCS857GHZ

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