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.

4FGL J2042.1-5320

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J2042.1-5320 Swift-XRT detections in the field for 4FGL J2042.1-5320

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 20 42 20.35 -53 26 43.22 3.86 (6.0 ± 0.4) x 10-2 216 14.840 13.540
2 20 42 43.44 -53 28 26.33 7.09 (3.2 ± 1.1) x 10-3 11 2.902 3.011

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 42 10.23 -53 10 55.11 7.97 (2.0 ± 0.9) x 10-3 9 2.323 2.355

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J2042.1-5320 Swift-XRT image with known radio, optical and UV sources for 4FGL J2042.1-5320

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 1RXS J204220.7-532643 20 42 20.69 -53 26 43.08 6.79 ROSAT
1RXS J204220.7-532643 20 42 20.69 -53 26 43.08 6.79 ROSAT
2RXS J204220.8-532643 20 42 20.83 -53 26 43.44 6.81 ROSAT
2RXS J204220.8-532643 20 42 20.83 -53 26 43.44 6.81 ROSAT
6dFGS J2042211-532648 20 42 21.14 -53 26 48.48 6.90 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 GLEAM J204217-532058 20 42 17.90 -53 20 58.92 1.60 GLEAMEGCAT
SUMSS J204217-532107 20 42 17.50 -53 21 06.84 1.62 SUMSS
QORG J204217.6-532108 20 42 17.59 -53 21 07.92 1.65 QORGCAT
2 PGC 430500 20 42 41.59 -53 23 07.08 5.73 PGC2003
3 PGC 431438 20 42 48.91 -53 18 19.08 6.28 PGC2003
QORG J204220.4-532643 20 42 20.40 -53 26 43.08 6.78 QORGCAT
4 SUMSS J204220-532654 20 42 20.30 -53 26 54.96 6.96 SUMSS
5 GLEAM J204129-532517 20 41 29.30 -53 25 17.04 7.79 GLEAMEGCAT
SUMSS J204128-532526 20 41 28.39 -53 25 27.12 8.00 SUMSS
6 PGC 431220 20 43 02.50 -53 19 21.00 8.08 PGC2003
PGC 430051 20 41 28.30 -53 25 37.92 8.13 PGC2003
7 PGC 92610 20 41 57.41 -53 11 58.92 8.36 PGC2003
8 PGC 65247 20 43 07.80 -53 19 21.00 8.86 PGC2003
ESO 203925-5330.2 20 43 08.40 -53 19 30.00 8.94 ESOUPPSALA
9 GLEAM J204307-531348 20 43 07.10 -53 13 49.08 10.80 GLEAMEGCAT
10 PGC 429238 20 42 34.39 -53 30 28.08 10.99 PGC2003
QORG J204107.7-532635 20 41 07.70 -53 26 35.16 11.13 QORGCAT
11 SUMSS J204107-532629 20 41 07.20 -53 26 29.04 11.14 SUMSS
GLEAM J204106-532627 20 41 06.50 -53 26 26.88 11.20 GLEAMEGCAT
12 PGC 429095 20 42 20.40 -53 31 14.88 11.22 PGC2003
13 PGC 429249 20 42 41.50 -53 30 21.96 11.31 PGC2003
14 PGC 128870 20 43 10.01 -53 27 56.88 12.00 PGC2003
15 SUMSS J204328-532122 20 43 28.99 -53 21 21.96 12.04 SUMSS
16 PGC 433269 20 41 18.70 -53 10 08.04 12.51 PGC2003
17 PGC 429019 20 42 50.59 -53 31 41.16 13.10 PGC2003
18 PGC 65187 20 41 07.39 -53 29 48.84 13.29 PGC2003
Unknown 20 41 07.39 -53 29 53.88 13.35 RC3
A2037-5340 20 41 07.39 -53 29 54.24 13.35 ZCAT
ESO 203724-5340.5 20 41 07.20 -53 29 52.80 13.35 ESOUPPSALA
19 PGC 429270 20 43 17.40 -53 30 15.12 14.37 PGC2003
QORG J204048.3-531136 20 40 48.31 -53 11 35.88 14.76 QORGCAT
20 PGC 433665 20 40 55.90 -53 08 22.92 16.05 PGC2003
21 PGC 428991 20 43 28.51 -53 31 53.04 16.69 PGC2003

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