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 J1258.5-3406

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J1258.5-3406 Swift-XRT detections in the field for 4FGL J1258.5-3406


No detected excesses found.

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 12 59 08.49 -34 02 58.32 6.52 (2.3 ± 0.9) x 10-3 12 2.778 2.615

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J1258.5-3406 Swift-XRT image with known radio, optical and UV sources for 4FGL J1258.5-3406


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 666805 12 58 27.70 -34 07 23.16 1.75 PGC2003
2 PGC 667625 12 58 39.60 -34 04 01.92 2.48 PGC2003
SUMSS J125838-340313 12 58 38.59 -34 03 12.96 3.15 SUMSS
3 NVSS J125839-340311 12 58 39.00 -34 03 11.16 3.21 NVSS
TGSSADR J125838.7-340306 12 58 38.71 -34 03 06.12 3.28 GMRTAS150M
4 PGC 667786 12 58 43.30 -34 03 21.96 3.44 PGC2003
5 NVSS J125821-340217 12 58 22.01 -34 02 17.88 4.67 NVSS
6 PGC 44531 12 58 59.71 -34 09 05.04 6.02 PGC2003
DENISP_G_J1258599-340905 12 58 59.90 -34 09 05.04 6.05 DENISIGAL
ESO 125615-3352.9 12 59 00.00 -34 09 03.60 6.06 ESOUPPSALA
A1256-3352 12 58 59.98 -34 09 05.04 6.07 ZCAT
7 NVSS J125902-340325 12 59 02.40 -34 03 25.92 6.50 NVSS
8 NVSS J125758-340300 12 57 58.61 -34 03 01.08 8.03 NVSS
SUMSS J125758-340255 12 57 58.70 -34 02 54.96 8.05 SUMSS
TGSSADR J125758.3-340301 12 57 58.30 -34 03 02.16 8.08 GMRTAS150M
9 NVSS J125801-340152 12 58 01.10 -34 01 51.96 8.11 NVSS
10 V486 Cen 12 57 59.62 -34 10 46.20 8.46 GCVS
11 NVSS J125755-340954 12 57 55.51 -34 09 55.08 8.80 NVSS
SUMSS J125900-335751 12 59 00.70 -33 57 51.84 10.02 SUMSS
12 NVSS J125901-335754 12 59 01.30 -33 57 55.08 10.05 NVSS
13 NVSS J125802-341717 12 58 02.50 -34 17 17.88 12.85 NVSS

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