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.

1FGL J0857.7-4345

Field

Detected Excesses

Swift-XRT image of the field for 1FGL J0857.7-4345 Swift-XRT detections in the field for 1FGL J0857.7-4345


No detected excesses found.

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 27.91 -43 40 58.89 6.31 (2.5 ± 1.0) x 10-3 15 2.612 2.643
2 08 56 49.56 -43 47 14.47 6.31 (2.1 ± 0.9) x 10-3 10 2.264 2.249

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 1FGL J0857.7-4345 Swift-XRT image with known radio, optical and UV sources for 1FGL J0857.7-4345

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 XMMSL1 J085740.0-435335 08 57 40.06 -43 53 34.80 7.99 XMM-NEWTON

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 MGPS J085719-433854 08 57 19.39 -43 38 54.96 7.98 MGPS2
2 PPM 313812 08 57 04.34 -43 37 40.08 10.63 PPM
NN 08 57 04.30 -43 37 39.72 10.64 ACRS
SAO 220687 08 57 04.22 -43 37 39.00 10.66 SAO
3 WDS J08567-4348 08 56 42.00 -43 47 60.00 11.34 WDS
4 CD-43 4785 08 56 46.99 -43 39 23.76 11.94 ACRS
PPM 313806 08 56 46.97 -43 39 24.12 11.94 PPM
SAO 220683 08 56 46.85 -43 39 24.12 11.96 SAO
5 WDS J08567-4355 08 56 42.00 -43 55 00.12 14.52 WDS
6 Rns 21650 08 56 39.00 -43 55 28.92 15.24 CPSTARS
PPM 313802 08 56 39.05 -43 55 29.64 15.24 PPM
NN 08 56 39.05 -43 55 29.64 15.24 ACRS
SAO 220680 08 56 38.83 -43 55 28.56 15.26 SAO
7 MGPS J085639-433509 08 56 39.31 -43 35 09.96 15.60 MGPS2

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