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 J0031.5-5648

Field

Detected Excesses

Swift-XRT image of the field for 4FGL J0031.5-5648 Swift-XRT detections in the field for 4FGL J0031.5-5648

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 00 31 35.10 -56 46 40.07 5.14 (1.3 ± 0.2) x 10-2 39 5.847 5.856
2 00 32 21.80 -56 41 02.07 5.89 (4.7 ± 1.4) x 10-3 17 3.716 3.422

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 00 32 38.46 -56 55 26.32 7.27 (2.2 ± 0.9) x 10-3 10 2.500 2.321
2 00 31 57.18 -56 58 57.40 6.21 (2.4 ± 1.1) x 10-3 9 2.354 2.166

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 4FGL J0031.5-5648 Swift-XRT image with known radio, optical and UV sources for 4FGL J0031.5-5648


No known X-ray or gamma ray sources found.

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 PGC 396974 00 31 34.30 -56 48 33.84 0.24 PGC2003
2 SUMSS J003136-564637 00 31 36.41 -56 46 36.84 1.80 SUMSS
3 PGC 397284 00 31 21.70 -56 46 27.84 2.73 PGC2003
4 SUMSS J003122-564403 00 31 22.30 -56 44 03.12 4.73 SUMSS
5 PGC 396427 00 32 08.81 -56 52 05.16 5.83 PGC2003
6 PPM 330289 00 30 51.84 -56 51 39.60 6.82 PPM
7 PGC 398024 00 31 25.80 -56 41 27.96 7.08 PGC2003
8 SAO 232080 00 31 54.19 -56 57 53.64 9.81 SAO
PPM 330306 00 31 54.05 -56 57 54.36 9.82 PPM
CD-57 105 00 31 54.07 -56 57 54.72 9.82 ACRS
9 SUMSS J003048-565704 00 30 48.79 -56 57 05.04 10.78 SUMSS
10 GLEAM J003153-565954 00 31 53.21 -56 59 53.88 11.74 GLEAMEGCAT
SUMSS J003152-570000 00 31 52.80 -57 00 01.08 11.83 SUMSS
11 GLEAM J003256-564201 00 32 56.90 -56 42 02.16 12.84 GLEAMEGCAT
SUMSS J003257-564205 00 32 57.50 -56 42 05.04 12.88 SUMSS
12 PGC 128471 00 33 01.20 -56 41 15.00 13.74 PGC2003
13 MWACS J0030.5-5659 00 30 35.90 -56 59 36.96 13.86 MWACS
SUMSS J003035-565946 00 30 35.40 -56 59 45.96 14.03 SUMSS
GLEAM J003033-565941 00 30 33.79 -56 59 40.92 14.08 GLEAMEGCAT
14 SUMSS J003258-563729 00 32 58.61 -56 37 28.92 15.78 SUMSS

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