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 J1550.4+6027

Field

Detected Excesses

Swift-XRT image of the field for 3FGL J1550.4+6027 Swift-XRT detections in the field for 3FGL J1550.4+6027

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 15 50 52.65 +60 22 59.67 6.41 (3.5 ± 1.1) x 10-3 15 3.125 3.190

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 49 38.15 +60 21 13.77 8.62 (1.8 ± 0.8) x 10-3 8 2.318 2.382
2 15 50 23.45 +60 19 19.21 7.48 (1.9 ± 0.8) x 10-3 9 2.294 2.311
3 15 50 08.17 +60 36 17.22 6.21 (2.3 ± 1.0) x 10-3 12 2.685 2.229

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 3FGL J1550.4+6027 Swift-XRT image with known radio, optical and UV sources for 3FGL J1550.4+6027

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 2RXS J155053.8+602258 15 50 53.88 +60 22 58.08 5.61 ROSAT
2RXS J155053.8+602258 15 50 53.88 +60 22 58.08 5.61 ROSAT
1RXS J155054.5+602300 15 50 54.50 +60 22 59.88 5.63 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 FIRST J155037.1+602731 15 50 37.10 +60 27 30.96 0.95 FIRST
WN 1549.4+6038 15 50 22.10 +60 29 39.12 2.15 WENSS
FIRST J155021.9+602946 15 50 21.91 +60 29 47.04 2.27 FIRST
TGSSADR J155021.9+602947 15 50 22.01 +60 29 47.04 2.27 GMRTAS150M
2 NVSS J155021+602951 15 50 21.79 +60 29 51.00 2.34 NVSS
FIRST J155007.4+603008 15 50 07.51 +60 30 09.00 3.65 FIRST
3 NVSS J155007+603012 15 50 07.51 +60 30 12.96 3.69 NVSS
FIRST J155008.0+603020 15 50 07.99 +60 30 20.16 3.73 FIRST
7C 155006.3+604001 15 51 00.00 +60 31 05.16 5.03 UC7C151MHZ
WN 1550.0+6040 15 50 59.59 +60 31 12.00 5.08 WENSS
FIRST J155059.9+603111 15 50 59.90 +60 31 12.00 5.11 FIRST
TGSSADR J155100.2+603110 15 51 00.19 +60 31 10.92 5.12 GMRTAS150M
4 NVSS J155059+603112 15 51 00.00 +60 31 13.08 5.12 NVSS
5 FIRST J155011.8+603300 15 50 11.90 +60 33 01.08 5.73 FIRST
6 FIRST J155122.1+602812 15 51 22.10 +60 28 12.00 6.49 FIRST
7 NVSS J154930+602347 15 49 30.00 +60 23 47.04 8.33 NVSS
FIRST J154928.1+602337 15 49 28.10 +60 23 38.04 8.62 FIRST
FIRST J155101.9+603525 15 51 01.99 +60 35 25.08 8.67 FIRST
8 NVSS J155102+603528 15 51 02.59 +60 35 27.96 8.75 NVSS
FIRST J155010.5+603623 15 50 10.61 +60 36 23.04 8.99 FIRST
9 NVSS J155010+603623 15 50 10.61 +60 36 24.12 8.99 NVSS
10 FIRST J155014.1+603714 15 50 14.21 +60 37 14.88 9.72 FIRST
11 GB6 J1551+6021 15 51 47.71 +60 21 47.88 11.31 GB6
WN 1548.1+6041 15 49 03.10 +60 32 48.12 11.80 WENSS
7C 154809.2+604157 15 49 03.31 +60 32 53.88 11.82 UC7C151MHZ
TGSSADR J154902.8+603247 15 49 02.81 +60 32 48.12 11.83 GMRTAS150M
12 NVSS J154902+603248 15 49 02.59 +60 32 48.84 11.86 NVSS
FIRST J154902.3+603245 15 49 02.40 +60 32 45.96 11.86 FIRST
FIRST J154902.8+603257 15 49 02.90 +60 32 57.84 11.90 FIRST
13 FIRST J155058.8+603918 15 50 58.80 +60 39 19.08 12.14 FIRST
FIRST J155146.4+601921 15 51 46.39 +60 19 21.00 12.65 FIRST
14 NVSS J155146+601910 15 51 46.80 +60 19 10.92 12.80 NVSS
TGSSADR J154856.3+602138 15 48 56.30 +60 21 38.16 13.02 GMRTAS150M
FIRST J154856.0+602139 15 48 56.11 +60 21 39.96 13.04 FIRST
15 NVSS J154856+602138 15 48 55.99 +60 21 38.16 13.05 NVSS
WN 1547.9+6030 15 48 54.10 +60 21 47.16 13.19 WENSS
16 NVSS J155156+603547 15 51 56.90 +60 35 48.12 13.44 NVSS
FIRST J155156.7+603550 15 51 56.81 +60 35 51.00 13.46 FIRST
WN 1551.0+6044 15 51 58.20 +60 35 49.92 13.58 WENSS
FIRST J154852.7+603522 15 48 52.80 +60 35 22.92 14.17 FIRST
17 NVSS J154852+603531 15 48 52.80 +60 35 31.92 14.25 NVSS
18 FIRST J154852.9+603915 15 48 52.90 +60 39 15.12 16.56 FIRST

Penn State University Goddard Space Flight Center Swift