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 J2045.6-6838

Field

Detected Excesses

Swift-XRT image of the field for 3FGL J2045.6-6838 Swift-XRT detections in the field for 3FGL J2045.6-6838

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 20 44 44.75 -68 45 36.75 4.21 (3.7 ± 0.7) x 10-3 66 5.634 5.314
2 20 44 46.74 -68 50 20.12 4.57 (2.2 ± 0.5) x 10-3 34 3.955 4.101
3 20 44 47.32 -68 52 35.18 4.71 (1.5 ± 0.5) x 10-3 24 3.408 3.283
4 20 45 49.96 -68 40 45.87 4.43 (1.9 ± 0.6) x 10-3 58 3.523 3.192
5 20 44 00.21 -68 52 41.53 5.11 (1.3 ± 0.4) x 10-3 19 2.859 3.141
6 20 46 03.81 -68 41 44.48 4.26 (1.6 ± 0.5) x 10-3 61 3.478 3.012

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 20 44 13.26 -68 39 09.24 4.74 (1.3 ± 0.5) x 10-3 30 2.659 2.902
2 20 44 14.23 -68 40 36.04 4.52 (1.3 ± 0.4) x 10-3 36 2.850 2.870
3 20 45 47.30 -68 46 07.84 4.34 (1.1 ± 0.5) x 10-3 41 2.869 2.223
4 20 45 52.75 -68 43 16.92 4.43 (1.1 ± 0.5) x 10-3 35 3.350 2.069
5 20 46 07.76 -68 47 25.57 4.28 (9 ± 5) x 10-4 32 2.727 2.001
6 20 45 29.95 -68 41 22.19 4.38 (9 ± 5) x 10-4 59 2.663 1.929

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 3FGL J2045.6-6838 Swift-XRT image with known radio, optical and UV sources for 3FGL J2045.6-6838

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 SACSSP J204339.5-682630 20 43 39.10 -68 26 26.88 15.91 SWIFT
SACSTP J204339.4-682630 20 43 39.50 -68 26 26.52 15.92 SWIFT
SACSHP J204339.2-682628 20 43 38.88 -68 26 25.08 15.94 SWIFT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 SUMSS J204606-683313 20 46 06.91 -68 33 14.04 5.53 SUMSS
2 SUMSS J204528-683108 20 45 28.30 -68 31 09.12 6.99 SUMSS
GLEAM J204529-683107 20 45 29.40 -68 31 06.96 7.01 GLEAMEGCAT
3 SUMSS J204654-683613 20 46 54.91 -68 36 12.96 7.27 SUMSS
4 PCCS2 857 G325.95-35.31 20 44 42.60 -68 44 53.88 8.46 PCCS857GHZ
5 SUMSS J204621-684557 20 46 21.79 -68 45 56.88 8.83 SUMSS
GLEAM J204623-684602 20 46 23.69 -68 46 01.92 8.98 GLEAMEGCAT
6 PCCS2 353 G325.94-35.30 20 44 38.21 -68 45 20.88 9.06 PCCS353GHZ
PCCS2 545 G325.94-35.29 20 44 34.99 -68 45 11.88 9.11 PCCS545GHZ
7 SUMSS J204707-683313 20 47 07.51 -68 33 12.96 9.52 SUMSS

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