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 J0447.1-2540

Field

Detected Excesses

Swift-XRT image of the field for 3FGL J0447.1-2540 Swift-XRT detections in the field for 3FGL J0447.1-2540

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 04 47 22.52 -25 39 37.48 5.00 (9 ± 2) x 10-3 40 4.511 4.277

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 04 47 22.49 -25 39 37.45 5.00 (3.9 ± 1.4) x 10-3 40 3.097 2.797
2 04 47 25.41 -25 46 32.13 5.76 (3.4 ± 1.2) x 10-3 16 2.847 2.773
3 04 46 39.20 -25 43 48.16 6.04 (3.2 ± 1.2) x 10-3 13 2.764 2.629
4 04 47 18.00 -25 44 55.35 6.52 (2.8 ± 1.2) x 10-3 15 2.467 2.374

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 3FGL J0447.1-2540 Swift-XRT image with known radio, optical and UV sources for 3FGL J0447.1-2540


No known X-ray or gamma ray sources found.

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 NVSS J044721-253928 04 47 21.31 -25 39 28.08 2.61 NVSS
GLEAM J044704-253640 04 47 04.10 -25 36 41.04 4.14 GLEAMEGCAT
2 NVSS J044704-253641 04 47 04.01 -25 36 41.04 4.15 NVSS
TGSSADR J044704.0-253640 04 47 04.01 -25 36 41.04 4.15 GMRTAS150M
3 NVSS J044642-253625 04 46 42.70 -25 36 25.92 7.55 NVSS
4 NVSS J044746-254343 04 47 46.61 -25 43 42.96 8.67 NVSS
5 NVSS J044723-255043 04 47 23.30 -25 50 43.08 10.56 NVSS

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