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 J2120.4-1256

Field

Detected Excesses
Swift-XRT image of the field for 3FGL J2120.4-1256 Swift-XRT detections in the field for 3FGL J2120.4-1256

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 21 20 51.55 -12 53 00.41 5.08 (3.4 ± 0.9) x 10-3 28 4.349 4.023
2 21 20 55.86 -12 50 50.87 5.49 (2.3 ± 0.7) x 10-3 25 3.687 3.445
3 21 20 10.63 -12 49 53.25 5.89 (2.4 ± 0.7) x 10-3 17 3.420 3.408
4 21 20 47.36 -12 53 11.65 4.78 (3.4 ± 1.0) x 10-3 30 4.652 3.307
5 21 20 42.31 -12 54 06.29 4.38 (3.2 ± 1.0) x 10-3 60 5.013 3.266
6 21 19 39.90 -12 47 51.19 5.59 (2.3 ± 0.7) x 10-3 13 3.183 3.178

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 21 20 18.88 -12 56 15.06 6.65 (1.6 ± 0.6) x 10-3 11 2.460 2.838
2 21 20 48.73 -12 57 18.76 6.21 (1.3 ± 0.6) x 10-3 14 2.347 2.342
3 21 20 42.20 -12 54 09.00 4.37 (1.5 ± 0.7) x 10-3 65 3.454 2.182
4 21 19 56.98 -12 49 54.61 6.31 (9 ± 5) x 10-4 10 2.407 2.029
5 21 20 37.83 -12 54 39.46 4.78 (1.2 ± 0.6) x 10-3 40 3.127 1.971
6 21 20 44.50 -12 54 10.36 4.33 (6 ± 6) x 10-4 50 2.402 1.016

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 3FGL J2120.4-1256 Swift-XRT image with known radio, optical and UV sources for 3FGL J2120.4-1256

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 2RXS J212037.3-125418 21 20 37.32 -12 54 18.36 3.11 ROSAT
2RXS J212037.3-125418 21 20 37.32 -12 54 18.36 3.11 ROSAT
1RXS J212037.4-125417 21 20 37.39 -12 54 17.64 3.13 ROSAT
2 SWXCS J212042-1254.2 21 20 41.95 -12 54 12.96 3.95 SWIFT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
GLEAM J212036-125447 21 20 36.10 -12 54 47.88 2.53 GLEAMEGCAT
WISH B2117.8-1307 21 20 35.50 -12 54 42.12 2.53 WISH
QORG J212035.7-125442 21 20 35.69 -12 54 42.12 2.55 QORGCAT
1 NVSS J212035-125443 21 20 35.90 -12 54 43.92 2.55 NVSS
TGSSADR J212035.8-125440 21 20 35.81 -12 54 41.04 2.58 GMRTAS150M
2 SAO 164322 21 20 46.85 -12 53 10.32 5.53 SAO
HD 203162 21 20 46.87 -12 53 10.32 5.54 HIC
PPM 238705 21 20 46.87 -12 53 10.32 5.54 PPM
BD-13 5912 21 20 46.87 -12 53 10.32 5.54 ACRS
HIP 105385 21 20 46.87 -12 53 09.96 5.54 HIPPARCOS
3 PGC 3093673 21 20 20.50 -13 03 10.08 6.76 PGC2003
4 BD-13 5910 21 20 01.99 -12 59 11.04 7.15 ACRS
PPM 238690 21 20 01.99 -12 59 11.04 7.15 PPM
HD 203035 21 20 01.99 -12 59 11.04 7.15 HIC
HIP 105325 21 20 01.97 -12 59 11.04 7.15 HIPPARCOS
SAO 164311 21 20 01.85 -12 59 08.88 7.17 SAO
5 PGC 946996 21 20 44.90 -12 49 44.04 7.97 PGC2003
6 NVSS J212019-130435 21 20 19.61 -13 04 35.04 8.18 NVSS
QORG J212019.7-130438 21 20 19.70 -13 04 37.92 8.22 QORGCAT
7 PGC 947031 21 20 50.11 -12 49 35.04 8.76 PGC2003
8 PGC 943960 21 20 58.61 -13 02 08.16 8.86 PGC2003
9 PGC 947477 21 20 37.99 -12 47 47.04 9.22 PGC2003
10 WISH B2117.6-1318 21 20 19.90 -13 05 44.88 9.28 WISH
11 PGC 947705 21 20 16.90 -12 46 50.16 10.42 PGC2003
12 NVSS J211948-125107 21 19 48.60 -12 51 06.84 11.50 NVSS
13 PGC 947493 21 21 10.61 -12 47 43.08 13.49 PGC2003
14 ABELL2340 21 21 12.14 -12 46 59.88 14.25 ABELL
15 PGC 947955 21 21 14.50 -12 45 45.00 15.53 PGC2003

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