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 J1548.4+1455

Field

Detected Excesses
Swift-XRT image of the field for 3FGL J1548.4+1455 Swift-XRT detections in the field for 3FGL J1548.4+1455

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 15 48 15.63 +14 53 33.25 4.42 (1.3 ± 0.2) x 10-2 76 7.534 7.414
2 15 48 24.23 +15 06 31.75 5.89 (2.8 ± 0.9) x 10-3 16 3.209 3.244
3 15 48 18.60 +15 02 03.86 5.70 (2.5 ± 0.8) x 10-3 20 3.208 3.030

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 15 48 52.34 +15 01 14.50 5.24 (2.4 ± 0.9) x 10-3 17 3.137 2.787
2 15 48 37.20 +14 50 06.48 5.64 (2.0 ± 0.8) x 10-3 20 2.898 2.528

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 3FGL J1548.4+1455 Swift-XRT image with known radio, optical and UV sources for 3FGL J1548.4+1455

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 2RXS J154843.0+145630 15 48 43.70 +14 56 30.12 4.16 ROSAT
2RXS J154843.0+145630 15 48 43.70 +14 56 30.12 4.16 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
FIRST J154824.3+145702 15 48 24.41 +14 57 02.88 1.58 FIRST
[SPT2015] VLA J1548+1457 15 48 24.41 +14 57 02.88 1.58 FER2FUSRID
1 NVSS J154824+145702 15 48 24.31 +14 57 02.88 1.59 NVSS
FIRST J154818.7+145605 15 48 18.79 +14 56 04.92 1.90 FIRST
2 NVSS J154818+145546 15 48 18.41 +14 55 46.92 1.93 NVSS
3 GB6 J1548+1457 15 48 26.90 +14 57 33.84 2.04 GB6
4 FIRST J154817.4+145446 15 48 17.50 +14 54 46.08 2.27 FIRST
5 FIRST J154819.4+145736 15 48 19.51 +14 57 36.00 2.65 FIRST
FIRST J154818.4+145735 15 48 18.50 +14 57 34.92 2.79 FIRST
FIRST J154818.7+145747 15 48 18.79 +14 57 47.16 2.89 FIRST
6 FIRST J154815.6+145751 15 48 15.70 +14 57 51.12 3.47 FIRST
7 FIRST J154841.1+145811 15 48 41.21 +14 58 12.00 4.47 FIRST
8 4C+15.51 15 48 07.20 +14 54 56.16 4.66 DIXON
9 FIRST J154813.6+145943 15 48 13.61 +14 59 44.16 5.20 FIRST
10 NVSS J154844+145841 15 48 44.81 +14 58 41.16 5.47 NVSS
FIRST J154845.4+145836 15 48 45.41 +14 58 36.12 5.54 FIRST
MITG J1548+1451 15 48 08.50 +14 51 25.92 5.95 MITGB6CM
GB6 J1548+1451 15 48 07.90 +14 51 20.16 6.12 GB6
FIRST J154807.3+145937 15 48 07.30 +14 59 36.96 6.14 FIRST
11 NVSS J154807+145937 15 48 07.30 +14 59 38.04 6.15 NVSS
VLSSr J154807.7+145115 15 48 07.80 +14 51 15.84 6.19 VLSSR
[SPT2015] VLA J1548+145C 15 48 07.90 +14 51 11.88 6.21 FER2FUSRID
[SPT2015] VLA J1548+145B 15 48 07.90 +14 51 11.88 6.21 FER2FUSRID
FIRST J154807.9+145112 15 48 07.90 +14 51 11.88 6.21 FIRST
12 NVSS J154807+145117 15 48 07.51 +14 51 18.00 6.23 NVSS
TGSSADR J154807.5+145116 15 48 07.51 +14 51 15.84 6.23 GMRTAS150M
[SPT2015] VLA J1548+1451 15 48 07.20 +14 51 20.88 6.23 FER2FUSRID
[SPT2015] VLA J1548+145A 15 48 07.20 +14 51 20.88 6.23 FER2FUSRID
TXS 1545+150 15 48 07.39 +14 51 18.00 6.24 TEXAS
FIRST J154807.1+145121 15 48 07.20 +14 51 20.88 6.24 FIRST
1545+1500 15 48 07.70 +14 51 11.16 6.26 NORTH6CM
1545+1500 15 48 07.70 +14 51 11.16 6.26 NORTH20CM
GLEAM J154807+145116 15 48 07.30 +14 51 16.92 6.27 GLEAMEGCAT
1545+150 15 48 07.30 +14 51 11.16 6.33 MRC
13 FIRST J154803.9+145944 15 48 04.01 +14 59 44.16 6.84 FIRST
FIRST J154851.5+145128 15 48 51.50 +14 51 29.16 7.32 FIRST
14 NVSS J154851+145131 15 48 51.70 +14 51 30.96 7.33 NVSS
15 NVSS J154756+145638 15 47 56.30 +14 56 39.12 7.34 NVSS
FIRST J154755.6+145639 15 47 55.70 +14 56 39.12 7.49 FIRST
16 FIRST J154803.2+150257 15 48 03.31 +15 02 57.12 9.27 FIRST
17 NVSS J154855+144838 15 48 55.30 +14 48 38.16 9.82 NVSS
FIRST J154855.2+144833 15 48 55.20 +14 48 33.12 9.87 FIRST
18 OR+176 15 47 44.81 +14 57 48.96 10.29 DIXON
19 NVSS J154823+150548 15 48 23.30 +15 05 48.12 10.29 NVSS
FIRST J154823.0+150550 15 48 23.11 +15 05 49.92 10.33 FIRST
FIRST J154854.5+150352 15 48 54.60 +15 03 51.84 10.77 FIRST
20 NVSS J154854+150400 15 48 55.01 +15 04 00.84 10.94 NVSS
21 NVSS J154908+145953 15 49 08.81 +14 59 53.88 11.15 NVSS
FIRST J154908.8+145952 15 49 08.90 +14 59 53.16 11.16 FIRST
22 FIRST J154856.9+144639 15 48 57.00 +14 46 39.00 11.56 FIRST

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