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.

3FGL J1225.4-3448

Field

Detected Excesses

Swift-XRT image of the field for 3FGL J1225.4-3448 Swift-XRT detections in the field for 3FGL J1225.4-3448

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 12 25 36.66 -34 47 23.81 3.82 (7.9 ± 0.6) x 10-2 264 14.560 14.460
2 12 25 31.35 -34 46 04.38 4.51 (1.1 ± 0.3) x 10-2 59 5.674 3.905

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 25 05.31 -34 43 51.79 5.53 (3.7 ± 1.4) x 10-3 16 2.722 2.748
2 12 25 34.31 -34 41 09.93 5.64 (3.6 ± 1.4) x 10-3 22 2.463 2.553
3 12 24 44.70 -34 44 59.56 5.96 (2.9 ± 1.1) x 10-3 14 2.466 2.503
4 12 25 23.45 -34 42 33.44 4.88 (3.5 ± 1.4) x 10-3 25 2.688 2.451
5 12 25 57.24 -34 37 27.26 5.44 (3.1 ± 1.3) x 10-3 15 2.438 2.362
6 12 25 42.11 -34 41 01.62 5.64 (2.8 ± 1.2) x 10-3 18 2.494 2.346
7 12 25 48.02 -34 43 46.24 5.40 (2.7 ± 1.3) x 10-3 18 2.598 2.192
8 12 25 31.40 -34 46 02.97 4.55 (2.5 ± 1.3) x 10-3 59 2.564 1.918
9 12 25 54.12 -34 43 49.54 4.92 (2.5 ± 1.3) x 10-3 23 2.620 1.838

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 3FGL J1225.4-3448 Swift-XRT image with known radio, optical and UV sources for 3FGL J1225.4-3448

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 2RXS J122533.9-344737 12 25 33.96 -34 47 37.68 1.90 ROSAT
2RXS J122533.9-344737 12 25 33.96 -34 47 37.68 1.90 ROSAT
1RXS J122534.0-344737 12 25 34.01 -34 47 36.96 1.91 ROSAT
1RXS J122534.0-344737 12 25 34.01 -34 47 36.96 1.91 ROSAT
2 XMMSL2 J122536.4-344726 12 25 36.55 -34 47 25.80 2.47 XMM-NEWTON
XMMSL2 J122536.4-344726 12 25 36.55 -34 47 25.80 2.47 XMM-NEWTON
XMMSL2 J122536.4-344726 12 25 37.10 -34 47 32.28 2.53 XMM-NEWTON
XMMSL2 J122537.5-344720 12 25 37.68 -34 47 19.68 2.72 XMM-NEWTON
XMMSL2 J122537.5-344720 12 25 37.68 -34 47 19.68 2.72 XMM-NEWTON

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
SUMSS J122536-344720 12 25 36.89 -34 47 20.04 2.57 SUMSS
1 NVSS J122536-344719 12 25 36.89 -34 47 18.96 2.58 NVSS
2 NVSS J122514-344530 12 25 15.00 -34 45 29.88 3.63 NVSS
3 NVSS J122522-345554 12 25 22.30 -34 55 54.84 7.52 NVSS
4 NVSS J122503-344033 12 25 03.89 -34 40 33.96 9.03 NVSS
5 NVSS J122544-343834 12 25 44.71 -34 38 35.16 10.60 NVSS
TXS 1223-346 12 26 11.50 -34 53 36.96 10.78 TEXAS
GLEAM J122611-345338 12 26 11.59 -34 53 38.04 10.79 GLEAMEGCAT
SUMSS J122612-345333 12 26 12.10 -34 53 34.08 10.85 SUMSS
6 NVSS J122612-345333 12 26 12.19 -34 53 33.00 10.86 NVSS
TGSSADR J122612.1-345334 12 26 12.10 -34 53 34.08 10.86 GMRTAS150M
7 NVSS J122612-344158 12 26 12.60 -34 41 58.92 11.62 NVSS
SUMSS J122613-344202 12 26 13.10 -34 42 02.16 11.68 SUMSS
8 NVSS J122556-343747 12 25 56.11 -34 37 48.00 12.34 NVSS
9 NVSS J122618-350025 12 26 18.10 -35 00 24.84 16.13 NVSS

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