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 J1258.4+6554

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J1258.4+6554 Swift-XRT detections in the field for 4FGL J1258.4+6554

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 12 56 40.83 +66 00 21.15 5.96 (3.7 ± 0.9) x 10-3 20 4.050 3.946
2 12 59 01.94 +66 03 50.94 5.24 (4.2 ± 1.1) x 10-3 21 3.843 3.735
3 13 00 23.29 +65 51 23.97 6.78 (4.0 ± 1.1) x 10-3 13 2.688 3.586
4 12 58 46.22 +66 06 09.61 4.92 (3.2 ± 0.9) x 10-3 36 4.656 3.441
5 12 58 14.49 +65 56 43.39 6.52 (2.8 ± 0.8) x 10-3 17 3.090 3.293
6 12 57 31.58 +65 55 22.20 5.96 (2.5 ± 0.8) x 10-3 16 2.992 3.038

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 12 59 08.28 +66 02 58.67 5.35 (2.4 ± 0.9) x 10-3 17 3.390 2.789
2 13 00 11.57 +65 53 16.53 6.41 (1.8 ± 0.7) x 10-3 10 2.568 2.543
3 12 59 17.56 +66 01 19.31 5.08 (2.1 ± 0.8) x 10-3 25 3.667 2.485
4 12 57 33.35 +65 51 01.75 5.89 (1.7 ± 0.7) x 10-3 15 2.850 2.401
5 12 56 57.25 +65 50 27.36 6.04 (1.6 ± 0.7) x 10-3 11 2.691 2.210
6 12 59 22.66 +66 00 40.84 5.05 (2.0 ± 0.9) x 10-3 18 3.160 2.186
7 13 00 02.29 +65 54 38.76 6.52 (1.5 ± 0.7) x 10-3 12 2.449 2.182
8 12 57 48.72 +66 03 08.89 5.70 (1.4 ± 0.7) x 10-3 17 2.449 2.170
9 12 59 26.20 +66 00 07.64 5.70 (1.6 ± 0.8) x 10-3 18 2.741 2.103
10 12 59 43.59 +65 57 24.23 5.35 (1.4 ± 0.7) x 10-3 18 2.708 2.010
11 12 58 46.23 +66 06 09.54 4.92 (1.0 ± 0.7) x 10-3 36 2.984 1.498

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J1258.4+6554 Swift-XRT image with known radio, optical and UV sources for 4FGL J1258.4+6554


No known X-ray or gamma ray sources found.

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 PGC 2681999 12 58 52.39 +65 55 45.84 3.00 PGC2003
2 NVSS J125846+655116 12 58 46.80 +65 51 15.84 3.54 NVSS
TGSSADR J125826.2+655744 12 58 26.21 +65 57 45.00 3.56 GMRTAS150M
3 NVSS J125827+655748 12 58 27.70 +65 57 48.96 3.62 NVSS
WN 1257.0+6614 12 58 58.99 +65 58 44.04 5.57 WENSS
4 NVSS J125859+655843 12 58 59.50 +65 58 44.04 5.60 NVSS
TGSSADR J125859.8+655844 12 58 59.81 +65 58 45.12 5.63 GMRTAS150M
5 PGC 2680803 12 58 48.19 +65 48 12.96 6.34 PGC2003
6 NVSS J125733+655058 12 57 33.31 +65 50 58.92 6.39 NVSS
QORG J125733.0+655100 12 57 33.00 +65 50 60.00 6.41 QORGCAT
7 NVSS J125820+654738 12 58 20.11 +65 47 39.12 6.59 NVSS
8 PGC 2682520 12 59 14.50 +65 59 08.16 6.89 PGC2003
9 NVSS J125740+660100 12 57 40.20 +66 01 00.12 8.33 NVSS
10 ZW 1257+6605 12 59 31.92 +65 48 50.40 8.50 ZWCLUSTERS
11 PGC 2681410 13 00 01.90 +65 51 52.92 9.93 PGC2003
12 NVSS J125808+660432 12 58 08.30 +66 04 32.16 10.52 NVSS
13 NVSS J125929+660255 12 59 29.30 +66 02 54.96 10.77 NVSS
14 NVSS J125644+655715 12 56 44.50 +65 57 15.12 10.93 NVSS
15 GB6 J1258+6605 12 58 10.30 +66 05 08.16 11.08 GB6
16 QORG J125640.2+660019 12 56 40.20 +66 00 19.08 12.52 QORGCAT
SDSS J12566+6600 12 56 40.10 +66 00 19.08 12.53 VERONCAT
17 NVSS J125914+654229 12 59 14.11 +65 42 29.16 12.65 NVSS
18 PCCS2 353 G122.08+51.09 12 56 39.00 +66 01 41.16 13.34 PCCS353GHZ
19 NVSS J125644+660311 12 56 44.40 +66 03 11.88 13.82 NVSS
TGSSADR J125714.9+660558 12 57 14.90 +66 05 57.84 13.89 GMRTAS150M
20 NVSS J130017+654601 13 00 17.81 +65 46 00.84 13.94 NVSS
21 NVSS J125715+660602 12 57 15.10 +66 06 02.88 13.95 NVSS
WN 1255.2+6622 12 57 14.11 +66 06 03.96 14.02 WENSS

Penn State University Goddard Space Flight Center Swift