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 J1651.7-4359

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J1651.7-4359 Swift-XRT detections in the field for 4FGL J1651.7-4359

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 16 51 11.32 -44 02 37.88 4.21 (8.4 ± 0.9) x 10-3 98 9.076 9.032
2 16 51 01.13 -43 51 24.21 4.21 (8.8 ± 1.0) x 10-3 94 9.217 8.843
3 16 52 19.01 -44 14 07.14 7.27 (9 ± 3) x 10-4 11 2.829 3.034

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 16 53 24.53 -43 51 38.61 7.48 (9 ± 3) x 10-4 10 3.002 2.993
2 16 50 24.73 -43 55 02.11 7.48 (7 ± 3) x 10-4 9 2.284 2.573

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J1651.7-4359 Swift-XRT image with known radio, optical and UV sources for 4FGL J1651.7-4359

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 X165128.02-440133.8 16 51 28.03 -44 01 33.96 3.61 CHANDRA
1RXS J165111.8-440231 16 51 11.81 -44 02 30.84 6.63 ROSAT
2 2CXO J165111.6-440238 16 51 11.64 -44 02 38.76 6.71 CHANDRA
X165111.63-440238.8 16 51 11.64 -44 02 38.76 6.71 CHANDRA
ChI J165105-4403_1 16 51 11.64 -44 02 38.76 6.72 CHANDRA
CXOGSG J165111.6-440238 16 51 11.64 -44 02 38.76 6.72 CHANDRA
3 2CXO J165212.9-440427 16 52 12.96 -44 04 27.84 6.94 CHANDRA
4 X165158.49-440621.2 16 51 58.49 -44 06 21.24 7.11 CHANDRA
5 AX J1651.0-4403 16 51 06.00 -44 03 29.88 8.01 INTEGRAL
AX J165105-4403 16 51 05.76 -44 03 28.80 8.04 ASCA
6 CXOGSG J165047.5-440138 16 50 47.54 -44 01 38.64 10.54 CHANDRA
X165047.55-440138.9 16 50 47.54 -44 01 39.00 10.54 CHANDRA
2CXO J165047.5-440139 16 50 47.52 -44 01 39.36 10.54 CHANDRA
7 2CXO J165039.4-435911 16 50 39.48 -43 59 11.76 11.81 CHANDRA
X165039.48-435911.2 16 50 39.48 -43 59 11.04 11.81 CHANDRA
8 2CXO J165121.4-434833 16 51 21.48 -43 48 33.12 11.90 CHANDRA
9 2CXO J165225.6-441049 16 52 25.68 -44 10 49.08 13.32 CHANDRA
X165225.70-441049.0 16 52 25.70 -44 10 49.08 13.33 CHANDRA
CXOGSG J165225.7-441049 16 52 25.70 -44 10 49.08 13.33 CHANDRA
10 CXOGSG J165243.6-441137 16 52 43.63 -44 11 36.96 15.92 CHANDRA

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 PMN J1651-4400 16 51 35.90 -44 00 00.00 1.69 PMN
2 PPM 762229 16 51 33.72 -43 58 23.88 2.41 PPM
HD 326281 16 51 33.55 -43 58 23.16 2.44 HDEC
3 HD 326269 16 51 29.33 -43 53 26.88 6.83 HDEC
4 HD 326447 16 52 28.54 -43 59 02.76 7.84 HDEC
5 HD 326283 16 51 09.24 -44 04 45.12 8.21 HDEC
6 HD 326446 16 52 12.31 -43 52 57.36 8.31 HDEC
7 MGPS J165114-440642 16 51 14.21 -44 06 42.12 8.96 MGPS2
8 HD 326282 16 50 54.05 -44 02 40.20 9.66 HDEC
9 SAO 227295 16 50 50.86 -44 02 25.44 10.13 SAO
10 PMN J1652-4350 16 52 09.19 -43 50 29.04 10.16 PMN
CD-4311161 16 50 50.57 -44 02 23.64 10.18 ACRS
PPM 322266 16 50 50.54 -44 02 23.64 10.18 PPM
11 PPM 762241 16 52 32.83 -43 53 18.60 10.69 PPM
HD 326445 16 52 32.81 -43 53 17.88 10.69 HDEC
12 HD 328880 16 52 10.22 -44 09 42.84 11.02 HDEC
13 HD 328878 16 51 19.30 -44 09 55.08 11.25 HDEC
14 MGPS J165054-440659 16 50 54.50 -44 07 00.12 11.67 MGPS2
15 HD 326433 16 52 04.13 -43 48 15.84 11.90 HDEC
16 V889 SCO 16 51 10.44 -44 10 22.80 12.39 WOODEBCAT
17 HD 328879 16 51 21.94 -44 11 26.52 12.49 HDEC
18 HD 326434 16 52 25.39 -43 49 02.28 12.87 HDEC
19 [WBH2005] G341.284+0.118 16 51 06.79 -44 11 12.12 13.43 WBHGP20CM
20 HD 326435 16 52 44.40 -43 48 19.80 15.58 HDEC

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