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 J1553.1+5437

Field

Detected Excesses

Swift-XRT image of the field for 3FGL J1553.1+5437 Swift-XRT detections in the field for 3FGL J1553.1+5437


No detected excesses found.

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 53 06.87 +54 46 24.23 5.24 (5 ± 2) x 10-3 22 3.503 2.798
2 15 53 34.32 +54 42 31.79 5.53 (4 ± 2) x 10-3 21 2.700 2.587
3 15 52 26.04 +54 38 53.69 5.89 (3.4 ± 1.4) x 10-3 18 2.453 2.424

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 3FGL J1553.1+5437 Swift-XRT image with known radio, optical and UV sources for 3FGL J1553.1+5437

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 1RXS J155300.6+543319 15 53 00.60 +54 33 19.08 4.36 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
WN 1552.0+5446 15 53 13.80 +54 37 44.04 0.60 WENSS
FIRST J155313.8+543750 15 53 13.80 +54 37 50.88 0.68 FIRST
1 NVSS J155313+543751 15 53 13.90 +54 37 50.88 0.69 NVSS
2 PSR J1552+5437 15 52 53.30 +54 37 05.88 2.45 ATNFPULSAR
FIRST J155335.1+544414 15 53 35.11 +54 44 13.92 7.69 FIRST
FIRST J155336.2+544408 15 53 36.31 +54 44 08.88 7.69 FIRST
TGSSADR J155335.9+544411 15 53 36.00 +54 44 11.04 7.71 GMRTAS150M
WN 1552.3+5453 15 53 35.81 +54 44 12.84 7.73 WENSS
3 NVSS J155335+544413 15 53 35.81 +54 44 13.92 7.73 NVSS
FIRST J155335.6+544417 15 53 35.71 +54 44 17.88 7.79 FIRST
4 FIRST J155240.0+543040 15 52 40.10 +54 30 41.04 8.05 FIRST
5 FIRST J155342.3+543031 15 53 42.41 +54 30 32.04 8.36 FIRST
6 FIRST J155210.7+543841 15 52 10.70 +54 38 40.92 8.67 FIRST
7 NVSS J155311+544611 15 53 11.81 +54 46 10.92 8.74 NVSS
FIRST J155410.5+543807 15 54 10.51 +54 38 07.08 8.78 FIRST
8 FIRST J155312.6+542839 15 53 12.70 +54 28 40.08 8.80 FIRST
FIRST J155411.3+543815 15 54 11.40 +54 38 15.00 8.91 FIRST
WN 1552.9+5447 15 54 11.40 +54 38 18.96 8.92 WENSS
9 NVSS J155411+543816 15 54 11.50 +54 38 17.16 8.93 NVSS
10 NVSS J155203+544016 15 52 04.01 +54 40 15.96 9.97 NVSS
11 FIRST J155200.9+543807 15 52 00.91 +54 38 07.08 10.02 FIRST
12 NVSS J155219+544500 15 52 19.61 +54 45 01.08 10.50 NVSS
FIRST J155219.3+544500 15 52 19.39 +54 45 01.08 10.53 FIRST
TGSSADR J155219.4+544501 15 52 19.39 +54 45 01.08 10.53 GMRTAS150M
WN 1551.0+5453 15 52 19.20 +54 45 03.96 10.58 WENSS
WN 1550.7+5442 15 51 59.21 +54 33 55.08 10.85 WENSS
FIRST J155212.0+544422 15 52 12.10 +54 44 21.84 10.87 FIRST
FIRST J155159.1+543345 15 51 59.21 +54 33 45.00 10.91 FIRST
13 NVSS J155159+543342 15 51 59.09 +54 33 42.12 10.95 NVSS
14 NVSS J155211+544427 15 52 11.81 +54 44 27.96 10.96 NVSS
15 FIRST J155153.3+543936 15 51 53.30 +54 39 37.08 11.31 FIRST
16 NVSS J155200+543138 15 52 00.79 +54 31 37.92 11.60 NVSS
FIRST J155158.1+543126 15 51 58.20 +54 31 27.12 12.02 FIRST
17 NVSS J155423+543011 15 54 23.21 +54 30 11.16 12.85 NVSS
FIRST J155422.9+543008 15 54 22.99 +54 30 07.92 12.85 FIRST
FIRST J155223.3+542559 15 52 23.30 +54 25 59.16 13.32 FIRST
18 NVSS J155223+542556 15 52 23.30 +54 25 57.00 13.36 NVSS

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