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 J1239.7-3455

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J1239.7-3455 Swift-XRT detections in the field for 4FGL J1239.7-3455

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 12 39 33.85 -34 54 27.25 4.24 (1.9 ± 0.2) x 10-2 99 9.050 8.837

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 39 11.47 -34 58 10.78 6.78 (2.3 ± 0.8) x 10-3 13 2.962 2.978
2 12 39 48.81 -35 03 07.47 6.21 (2.0 ± 0.7) x 10-3 15 2.874 2.752
3 12 39 49.73 -34 48 51.34 5.96 (2.1 ± 0.8) x 10-3 16 2.876 2.651
4 12 38 34.95 -34 53 03.25 9.05 (2.0 ± 0.8) x 10-3 7 2.276 2.457
5 12 39 54.57 -34 59 23.41 7.48 (1.9 ± 0.8) x 10-3 9 2.536 2.370
6 12 40 00.35 -34 58 26.68 6.04 (1.7 ± 0.7) x 10-3 20 2.539 2.282
7 12 39 15.02 -34 47 32.47 6.52 (1.3 ± 0.6) x 10-3 10 2.465 2.114

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J1239.7-3455 Swift-XRT image with known radio, optical and UV sources for 4FGL J1239.7-3455

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 1RXS J123933.7-345414 12 39 33.70 -34 54 14.40 2.45 ROSAT
2RXS J123933.5-345415 12 39 33.58 -34 54 15.48 2.47 ROSAT
2RXS J123933.5-345415 12 39 33.58 -34 54 15.48 2.47 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
SUMSS J123933-345434 12 39 33.50 -34 54 33.84 2.32 SUMSS
QORG J123933.6-345427 12 39 33.60 -34 54 27.00 2.36 QORGCAT
1 NVSS J123933-345425 12 39 33.41 -34 54 24.84 2.40 NVSS
2 NVSS J124010-345542 12 40 10.20 -34 55 41.88 5.46 NVSS
3 NVSS J124009-345649 12 40 09.70 -34 56 48.84 5.47 NVSS
4 PGC 656830 12 39 54.70 -34 50 25.08 5.67 PGC2003
5 NVSS J123930-344906 12 39 30.50 -34 49 06.96 7.04 NVSS
6 NVSS J123915-345115 12 39 15.70 -34 51 15.84 7.19 NVSS
7 PGC 654309 12 39 16.01 -35 01 23.88 8.09 PGC2003
8 PGC 656506 12 39 03.91 -34 51 55.08 8.94 PGC2003
TGSSADR J123914.8-344744 12 39 14.90 -34 47 44.88 9.83 GMRTAS150M
GLEAM J123914-344742 12 39 14.90 -34 47 42.00 9.86 GLEAMEGCAT
SUMSS J123914-344743 12 39 14.71 -34 47 44.16 9.87 SUMSS
9 NVSS J123914-344739 12 39 14.59 -34 47 39.84 9.93 NVSS
SUMSS J124032-345648 12 40 32.90 -34 56 48.12 10.17 SUMSS
10 NVSS J124033-345644 12 40 33.00 -34 56 44.88 10.19 NVSS
QORG J124033.0-345647 12 40 33.00 -34 56 47.04 10.19 QORGCAT
11 PPM 290401 12 38 55.03 -34 51 43.20 10.70 PPM
CD-34 8320 12 38 54.96 -34 51 43.56 10.71 ACRS
SAO 203664 12 38 54.89 -34 51 44.28 10.72 SAO
12 A1236-3430 12 39 08.35 -34 47 13.92 11.07 ZCAT
ESO 123628-3430.5 12 39 09.36 -34 46 58.80 11.13 ESOUPPSALA
Unknown 12 39 09.41 -34 46 58.08 11.14 RC3
PGC 42313 12 39 09.60 -34 46 50.88 11.20 PGC2003
13 NVSS J123849-345755 12 38 49.20 -34 57 56.16 11.39 NVSS
14 NVSS J124000-350632 12 40 00.60 -35 06 33.12 11.47 NVSS

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