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.

2FGL J0458.4+0654

Field

Detected Excesses

Swift-XRT image of the field for 2FGL J0458.4+0654 Swift-XRT detections in the field for 2FGL J0458.4+0654

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 04 58 02.61 +06 50 12.38 4.28 (1.9 ± 0.2) x 10-2 95 9.237 9.193
2 04 58 56.90 +06 56 02.22 6.78 (2.9 ± 0.8) x 10-3 15 2.918 3.531
3 04 57 27.30 +07 01 35.93 7.27 (2.3 ± 0.7) x 10-3 11 2.842 3.124

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 58 02.09 +07 02 40.86 6.93 (2.0 ± 0.7) x 10-3 12 2.342 2.833
2 04 57 57.22 +06 53 51.54 5.11 (2.6 ± 0.9) x 10-3 23 3.281 2.808
3 04 58 16.27 +06 57 25.01 7.71 (1.7 ± 0.7) x 10-3 10 2.415 2.500
4 04 57 53.04 +06 54 31.51 5.64 (1.5 ± 0.7) x 10-3 12 2.544 2.080

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 2FGL J0458.4+0654 Swift-XRT image with known radio, optical and UV sources for 2FGL J0458.4+0654

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 1RXS J045802.4+065023 04 58 02.40 +06 50 23.64 6.69 ROSAT
2RXS J045802.3+065022 04 58 02.33 +06 50 22.56 6.71 ROSAT
2RXS J045802.3+065022 04 58 02.33 +06 50 22.56 6.71 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 [SPT2015] VLA J0458+0650 04 58 06.70 +06 50 13.92 5.95 FER2FUSRID
[PME2013] J0458+0650 04 58 06.79 +06 50 12.12 5.96 AT2FGLUS
2 NVSS J045753+065638 04 57 53.50 +06 56 39.12 8.07 NVSS
3 [SPT2015] VLA J0457+0659 04 57 57.00 +06 59 22.92 8.54 FER2FUSRID
4 NVSS J045854+064956 04 58 54.79 +06 49 55.92 8.66 NVSS
5 NVSS J045900+064849 04 59 00.41 +06 48 50.04 10.43 NVSS
6 0455+0659 04 58 02.09 +07 03 45.00 11.03 NORTH6CM
7 VLSSr J045903.1+065944 04 59 03.10 +06 59 44.16 11.06 VLSSR

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