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 J0954.8-3948

Field

Detected Excesses
Swift-XRT image of the field for 3FGL J0954.8-3948 Swift-XRT detections in the field for 3FGL J0954.8-3948

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 09 55 18.85 -39 40 10.62 4.18 (9.9 ± 1.2) x 10-3 90 8.582 8.203
2 09 55 27.75 -39 47 53.32 5.00 (3.4 ± 0.8) x 10-3 30 4.162 4.338
3 09 55 11.99 -39 51 59.43 4.90 (2.9 ± 0.7) x 10-3 35 4.099 4.076
4 09 54 51.45 -39 41 31.53 4.78 (2.8 ± 0.7) x 10-3 31 4.166 3.766

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 54 54.60 -39 54 11.95 5.40 (1.6 ± 0.6) x 10-3 16 3.049 2.861
2 09 55 07.67 -39 54 56.80 5.49 (1.6 ± 0.6) x 10-3 23 3.089 2.825
3 09 55 15.64 -39 53 16.33 5.20 (1.5 ± 0.5) x 10-3 22 3.205 2.714
4 09 54 45.54 -39 41 52.51 5.00 (1.7 ± 0.7) x 10-3 31 3.308 2.626
5 09 55 06.50 -39 53 46.06 5.14 (1.2 ± 0.5) x 10-3 22 2.696 2.215
6 09 55 04.60 -39 38 08.94 5.14 (1.0 ± 0.5) x 10-3 14 2.420 2.106
7 09 55 33.38 -39 50 49.62 5.70 (1.0 ± 0.5) x 10-3 18 2.484 2.022
8 09 54 22.89 -39 48 53.09 5.02 (9 ± 5) x 10-4 19 2.705 1.928

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 3FGL J0954.8-3948 Swift-XRT image with known radio, optical and UV sources for 3FGL J0954.8-3948

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 SWIFT J095527.7-394748 09 55 27.74 -39 47 48.84 7.11 SWIFT
2 SWIFT J095518.9-394010 09 55 18.96 -39 40 10.56 9.94 SWIFT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 NVSS J095458-394560 09 54 58.70 -39 46 00.12 2.93 NVSS
2 NVSS J095449-394520 09 54 49.80 -39 45 20.88 3.18 NVSS
3 NVSS J095511-394317 09 55 11.59 -39 43 17.04 6.58 NVSS
4 TGSSADR J095527.7-394755 09 55 27.70 -39 47 54.96 7.10 GMRTAS150M
GLEAM J095530-395632 09 55 30.79 -39 56 31.92 11.08 GLEAMEGCAT
5 NVSS J095530-395636 09 55 30.60 -39 56 35.88 11.11 NVSS
TGSSADR J095530.6-395636 09 55 30.70 -39 56 35.88 11.12 GMRTAS150M
SUMSS J095530-395637 09 55 30.70 -39 56 38.04 11.13 SUMSS
6 NVSS J095422-395919 09 54 22.90 -39 59 20.04 12.07 NVSS
7 NVSS J095349-395701 09 53 49.10 -39 57 01.08 14.59 NVSS

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