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 J0815.5+6554

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J0815.5+6554 Swift-XRT detections in the field for 4FGL J0815.5+6554

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 08 15 40.00 +65 50 04.32 4.02 (1.7 ± 0.2) x 10-2 144 11.280 11.030
2 08 16 21.45 +66 00 49.58 4.30 (9.9 ± 1.2) x 10-3 86 8.568 8.592
3 08 15 55.14 +66 01 26.59 5.64 (2.6 ± 0.6) x 10-3 23 4.160 4.085
4 08 15 36.72 +66 03 06.13 5.53 (1.8 ± 0.6) x 10-3 17 3.300 3.270

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 15 40.00 +65 50 04.32 4.02 (2.1 ± 0.8) x 10-3 144 3.804 2.585
2 08 15 07.40 +65 52 37.25 6.31 (1.2 ± 0.5) x 10-3 11 2.450 2.572
3 08 14 29.38 +65 59 49.50 5.70 (1.1 ± 0.5) x 10-3 14 2.494 2.457
4 08 16 35.00 +66 00 47.12 5.82 (1.1 ± 0.5) x 10-3 18 2.566 2.401
5 08 15 46.90 +65 52 11.83 5.44 (1.2 ± 0.5) x 10-3 27 2.484 2.373

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J0815.5+6554 Swift-XRT image with known radio, optical and UV sources for 4FGL J0815.5+6554

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 XMMSL2 J081540.6+655005 08 15 40.58 +65 50 04.56 4.04 XMM-NEWTON
XMMSL2 J081540.6+655005 08 15 40.58 +65 50 04.56 4.04 XMM-NEWTON
2 RX J0816.2+6600 08 16 17.81 +66 00 51.84 8.35 ROSAT
1RXS J081617.9+660056 08 16 17.90 +66 00 56.16 8.41 ROSAT
2RXS J081618.3+660055 08 16 18.38 +66 00 55.80 8.44 ROSAT
2RXS J081618.3+660055 08 16 18.38 +66 00 55.80 8.44 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 NVSS J081510+655619 08 15 10.70 +65 56 20.04 3.13 NVSS
TGSSADR J081510.4+655622 08 15 10.39 +65 56 21.84 3.18 GMRTAS150M
2 PGC 2681157 08 15 43.10 +65 50 21.84 3.83 PGC2003
3 GB6 J0815+6550 08 15 33.41 +65 50 00.96 3.99 GB6
4 NVSS J081539+655003 08 15 39.19 +65 50 03.12 4.03 NVSS
TGSSADR J081535.0+654957 08 15 35.11 +65 49 58.08 4.06 GMRTAS150M
WN 0810.9+6559 08 15 38.40 +65 49 58.08 4.09 WENSS
TGSSADR J081542.1+654952 08 15 42.10 +65 49 53.04 4.27 GMRTAS150M
5 PGC 2681353 08 16 32.81 +65 51 36.00 6.74 PGC2003
RXS J08162+6600 08 16 17.81 +66 00 51.84 8.35 VERONCAT
TGSSADR J081619.8+660053 08 16 19.80 +66 00 54.00 8.49 GMRTAS150M
QORG J081621.0+660049 08 16 21.00 +66 00 48.96 8.50 QORGCAT
WN 0811.6+6610 08 16 19.99 +66 00 54.00 8.50 WENSS
6 NVSS J081620+660054 08 16 20.21 +66 00 55.08 8.53 NVSS
7C 081141.1+661008 08 16 20.50 +66 00 55.08 8.55 UC7C151MHZ
8C 0811+661 08 16 22.39 +66 00 48.96 8.58 RRS8C38MHZ
0811+6610 08 16 20.11 +66 01 08.04 8.70 NORTH6CM
GB6 J0816+6601 08 16 20.59 +66 01 09.12 8.74 GB6
7 NVSS J081630+660053 08 16 30.00 +66 00 52.92 9.14 NVSS
8 PPM 16535 08 15 14.50 +66 04 03.00 10.19 PPM
NN 08 15 14.50 +66 04 03.00 10.19 ACRS
9 TGSSADR J081635.2+654454 08 16 35.21 +65 44 54.96 11.21 GMRTAS150M
10 NVSS J081634+654414 08 16 34.30 +65 44 13.92 11.71 NVSS
WN 0811.9+6553 08 16 34.61 +65 44 12.84 11.75 WENSS
TGSSADR J081633.8+654401 08 16 33.79 +65 44 02.04 11.86 GMRTAS150M
QORG J081407.6+654428 08 14 07.61 +65 44 27.96 12.81 QORGCAT
11 NVSS J081406+654428 08 14 06.60 +65 44 27.96 12.87 NVSS
12 NVSS J081342+660539 08 13 42.10 +66 05 39.84 16.09 NVSS

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