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 J0931.4-3559

Field

Detected Excesses

Swift-XRT image of the field for 4FGL J0931.4-3559 Swift-XRT detections in the field for 4FGL J0931.4-3559

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 09 31 37.50 -35 52 44.73 5.44 (2.0 ± 0.6) x 10-3 23 3.523 3.685
2 09 30 52.23 -35 56 10.40 5.44 (2.0 ± 0.6) x 10-3 23 3.626 3.451
3 09 31 38.89 -35 57 00.40 5.64 (2.0 ± 0.6) x 10-3 24 3.154 3.323

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 09 31 36.15 -36 09 34.97 5.14 (1.4 ± 0.5) x 10-3 23 2.975 2.828
2 09 31 51.62 -36 09 15.38 5.11 (1.3 ± 0.5) x 10-3 24 2.917 2.688
3 09 30 43.59 -36 00 03.81 5.49 (1.1 ± 0.5) x 10-3 14 2.492 2.430
4 09 32 02.77 -35 56 15.04 4.90 (1.2 ± 0.5) x 10-3 19 2.510 2.370
5 09 31 53.98 -35 56 34.31 5.20 (1.1 ± 0.5) x 10-3 19 2.542 2.234
6 09 31 21.09 -35 49 00.67 5.59 (1.0 ± 0.5) x 10-3 13 2.473 2.178
7 09 30 56.58 -36 08 00.20 5.28 (10 ± 5) x 10-4 20 2.583 2.120
8 09 31 58.60 -35 56 17.31 4.86 (10 ± 5) x 10-4 21 2.528 2.012

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 4FGL J0931.4-3559 Swift-XRT image with known radio, optical and UV sources for 4FGL J0931.4-3559


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 NVSS J093121-360025 09 31 21.50 -36 00 24.84 0.87 NVSS
SUMSS J093121-360029 09 31 21.19 -36 00 29.16 0.96 SUMSS
2 NVSS J093119-360442 09 31 19.51 -36 04 41.88 4.97 NVSS
3 SAO 200453 09 31 10.13 -35 55 34.68 5.19 SAO
HD 82465 09 31 10.06 -35 55 33.60 5.22 HIC
CD-35 5746 09 31 10.06 -35 55 33.24 5.22 ACRS
PPM 286556 09 31 10.06 -35 55 33.24 5.22 PPM
HIP 46697 09 31 10.03 -35 55 33.24 5.22 HIPPARCOS
4 NVSS J093110-360534 09 31 10.20 -36 05 34.08 6.44 NVSS
5 NVSS J093130-355306 09 31 30.91 -35 53 07.08 6.85 NVSS
GLEAM J093055-355623 09 30 55.10 -35 56 22.92 6.93 GLEAMEGCAT
6 NVSS J093054-355624 09 30 54.60 -35 56 25.08 6.99 NVSS
TGSSADR J093054.2-355628 09 30 54.19 -35 56 29.04 7.04 GMRTAS150M
7 PPM 742066 09 32 05.47 -36 01 00.48 8.32 PPM
8 NVSS J093201-360348 09 32 01.10 -36 03 47.88 8.34 NVSS
9 PPM 742065 09 32 05.04 -35 53 49.92 10.13 PPM
10 SAO 200475 09 32 16.54 -36 01 07.68 10.55 SAO
HD 82641 09 32 16.56 -36 01 06.24 10.56 HIC
CD-35 5764 09 32 16.56 -36 01 06.60 10.56 ACRS
PPM 286582 09 32 16.58 -36 01 06.60 10.56 PPM
HIP 46807 09 32 16.58 -36 01 06.24 10.56 HIPPARCOS
GLEAM J093152-360858 09 31 52.30 -36 08 58.92 10.70 GLEAMEGCAT
TGSSADR J093152.1-360904 09 31 52.10 -36 09 05.04 10.76 GMRTAS150M
11 NVSS J093152-360904 09 31 52.30 -36 09 03.96 10.77 NVSS
CRATES J093158-360929 09 31 52.30 -36 09 05.04 10.79 CRATES
SUMSS J093152-360905 09 31 52.20 -36 09 06.12 10.79 SUMSS
CRATES J093158-360929 09 31 52.30 -36 09 05.04 10.79 CRATES
12 NVSS J093120-354809 09 31 20.40 -35 48 09.00 11.73 NVSS
13 NVSS J093027-355814 09 30 27.19 -35 58 14.16 11.75 NVSS
14 PMN J0931-3609 09 31 58.39 -36 09 29.16 11.80 PMN
SUMSS J093203-354753 09 32 03.50 -35 47 53.16 14.30 SUMSS
GLEAM J093220-361005 09 32 20.40 -36 10 05.16 15.21 GLEAMEGCAT
TGSSADR J093220.1-361009 09 32 20.11 -36 10 09.84 15.22 GMRTAS150M
SUMSS J093220-361010 09 32 20.40 -36 10 09.84 15.26 SUMSS
15 NVSS J093220-361009 09 32 20.50 -36 10 09.84 15.27 NVSS

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