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 J0950.4+7550

Field

Detected Excesses

Swift-XRT image of the field for 3FGL J0950.4+7550 Swift-XRT detections in the field for 3FGL J0950.4+7550

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 09 50 18.68 +75 44 51.23 4.80 (7.7 ± 1.4) x 10-3 41 5.463 5.371
2 09 48 27.83 +75 57 45.25 5.82 (3.8 ± 0.9) x 10-3 21 3.897 4.207
3 09 51 34.03 +75 48 36.84 5.05 (4.6 ± 1.1) x 10-3 28 4.160 4.068
4 09 50 56.42 +75 45 11.12 5.76 (2.9 ± 0.9) x 10-3 18 3.385 3.372

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 09 48 12.74 +75 52 25.38 6.12 (2.0 ± 0.8) x 10-3 15 2.664 2.618
2 09 50 57.98 +75 56 40.94 5.44 (1.9 ± 0.8) x 10-3 20 2.651 2.486
3 09 49 21.27 +75 58 49.51 5.64 (1.5 ± 0.7) x 10-3 13 2.494 2.236

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 3FGL J0950.4+7550 Swift-XRT image with known radio, optical and UV sources for 3FGL J0950.4+7550

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 2RXS J095021.1+754454 09 50 21.12 +75 44 53.88 6.08 ROSAT
2RXS J095021.1+754454 09 50 21.12 +75 44 53.88 6.08 ROSAT
1RXS J095021.0+754454 09 50 21.00 +75 44 53.88 6.08 ROSAT
1RXS J095021.0+754454 09 50 21.00 +75 44 53.88 6.08 ROSAT
1RXS J095021.0+754454 09 50 21.00 +75 44 53.88 6.08 ROSAT
MCG+13-07-038 09 50 18.60 +75 44 53.16 6.10 ROSAT
2 2MAXI J0949+757 09 49 12.00 +75 42 00.00 10.06 MAXI

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 NVSS J095107+755101 09 51 07.90 +75 51 01.08 2.54 NVSS
2 NVSS J095015+754702 09 50 15.79 +75 47 03.12 3.98 NVSS
TGSSADR J095039.9+755604 09 50 40.01 +75 56 04.92 5.18 GMRTAS150M
3 NVSS J095040+755605 09 50 40.10 +75 56 04.92 5.19 NVSS
WN 0945.6+7610 09 50 39.31 +75 56 21.84 5.46 WENSS
4 NVSS J095025+754444 09 50 25.99 +75 44 44.88 6.22 NVSS
5 NVSS J095208+754826 09 52 08.40 +75 48 25.92 6.74 NVSS
WN 0945.4+7614 09 50 27.00 +76 00 24.12 9.42 WENSS
6 NVSS J095027+760026 09 50 27.50 +76 00 27.00 9.48 NVSS
7 NVSS J095339+754410 09 53 39.19 +75 44 09.96 13.65 NVSS
WN 0948.7+7558 09 53 38.90 +75 44 07.08 13.66 WENSS
TGSSADR J095339.2+754408 09 53 39.19 +75 44 08.88 13.66 GMRTAS150M

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