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 J0858.0-4834

Field

Detected Excesses
Swift-XRT image of the field for 3FGL J0858.0-4834 Swift-XRT detections in the field for 3FGL J0858.0-4834

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 08 57 55.77 -48 34 22.92 5.20 (8 ± 2) x 10-3 37 4.693 5.229
2 08 57 20.35 -48 37 45.76 5.44 (4.5 ± 1.2) x 10-3 22 3.761 3.780
3 08 59 02.15 -48 27 25.94 5.82 (3.4 ± 1.0) x 10-3 17 3.452 3.381

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 08 57 44.77 -48 44 15.92 6.04 (2.2 ± 0.9) x 10-3 10 2.517 2.459
2 08 58 21.67 -48 41 01.80 6.21 (2.0 ± 0.8) x 10-3 17 2.340 2.371

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 3FGL J0858.0-4834 Swift-XRT image with known radio, optical and UV sources for 3FGL J0858.0-4834

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 3XMM J085809.3-482359 08 58 09.31 -48 23 60.00 10.18 XMM-NEWTON
2 3XMM J085823.3-482423 08 58 23.35 -48 24 23.04 10.24 XMM-NEWTON
3 3XMM J085831.1-482418 08 58 31.18 -48 24 18.36 10.78 XMM-NEWTON
4 3XMM J085728.2-482407 08 57 28.20 -48 24 07.20 11.70 XMM-NEWTON
5 3XMM J085721.0-482432 08 57 21.29 -48 24 32.04 12.02 XMM-NEWTON
6 3XMM J085729.3-482327 08 57 29.40 -48 23 27.60 12.17 XMM-NEWTON
7 3XMM J085746.0-482209 08 57 46.20 -48 22 09.48 12.37 XMM-NEWTON
8 3XMM J085726.5-482248 08 57 26.59 -48 22 48.72 12.96 XMM-NEWTON
9 3XMM J085658.1-482521 08 56 58.18 -48 25 21.72 14.07 XMM-NEWTON

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 PMN J0857-4831 08 57 16.49 -48 31 45.84 8.30 PMN
2 PMN J0858-4823 08 58 04.30 -48 23 27.96 10.68 PMN
3 MGPS J085910-483242 08 59 10.30 -48 32 42.00 10.98 MGPS2
4 MGPS J085832-484443 08 58 33.00 -48 44 44.16 11.57 MGPS2
5 TGSSADR J085823.4-482243 08 58 23.50 -48 22 42.96 11.84 GMRTAS150M

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