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 J2321.9-4842

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J2321.9-4842 Swift-XRT detections in the field for 4FGL J2321.9-4842

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 23 21 00.15 -48 38 03.59 5.64 (1.1 ± 0.2) x 10-2 25 4.673 4.573

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 23 22 16.51 -48 36 13.11 8.62 (2.8 ± 1.3) x 10-3 7 2.183 2.218

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J2321.9-4842 Swift-XRT image with known radio, optical and UV sources for 4FGL J2321.9-4842

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 1RXS J232104.4-483825 23 21 04.39 -48 38 25.08 9.91 ROSAT
1RXS J232104.4-483825 23 21 04.39 -48 38 25.08 9.91 ROSAT
2RXS J232104.4-483824 23 21 04.42 -48 38 24.00 9.91 ROSAT
2RXS J232104.4-483824 23 21 04.42 -48 38 24.00 9.91 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 [HBM2016] J232139.59-484523.07 23 21 39.60 -48 45 23.04 4.33 ASKAPBETA
2 [HBM2016] J232131.15-484550.17 23 21 31.20 -48 45 50.04 5.69 ASKAPBETA
3 SUMSS J232240-484405 23 22 40.61 -48 44 04.92 7.04 SUMSS
4 PGC 485213 23 21 11.59 -48 39 12.96 8.50 PGC2003
5 MWACS J2321.1-4845 23 21 07.90 -48 45 51.12 9.09 MWACS
GLEAM J232107-484608 23 21 07.51 -48 46 09.12 9.26 GLEAMEGCAT
TGSSADR J232107.6-484617 23 21 07.61 -48 46 17.04 9.30 GMRTAS150M
SUMSS J232107-484616 23 21 07.61 -48 46 15.96 9.30 SUMSS
[HBM2016] J232107.38-484614.17 23 21 07.39 -48 46 14.16 9.31 ASKAPBETA
6 PPM 329223 23 22 53.78 -48 38 23.64 9.91 PPM
7 PGC 485021 23 20 59.59 -48 40 19.92 10.06 PGC2003
PGC 485037 23 20 58.80 -48 40 14.16 10.21 PGC2003
8 SPASS J232100-484606 23 21 00.79 -48 46 05.88 10.28 SPASS2P3GH
9 PGC 485179 23 20 57.79 -48 39 24.12 10.58 PGC2003
10 PGC 486115 23 22 37.01 -48 33 51.12 10.67 PGC2003
11 PGC 483014 23 21 08.90 -48 51 12.96 12.02 PGC2003
12 PGC 483453 23 23 07.20 -48 48 46.08 12.86 PGC2003

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