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 J1650.9-4420

Field

Detected Excesses

Swift-XRT image of the field for 4FGL J1650.9-4420 Swift-XRT detections in the field for 4FGL J1650.9-4420

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 16 51 24.51 -44 21 43.73 4.59 (1.6 ± 0.2) x 10-2 58 6.900 6.761

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 52 18.60 -44 14 04.55 7.97 (1.9 ± 0.8) x 10-3 7 2.379 2.284
2 16 51 12.15 -44 25 19.12 7.09 (2.2 ± 1.0) x 10-3 12 2.668 2.208

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 4FGL J1650.9-4420 Swift-XRT image with known radio, optical and UV sources for 4FGL J1650.9-4420

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 X165124.74-442145.2 16 51 24.74 -44 21 45.36 4.77 CHANDRA
2RXS J165123.8-442210 16 51 23.86 -44 22 10.20 4.78 ROSAT
2 1RXS J165124.4-442243 16 51 24.41 -44 22 42.96 5.11 ROSAT
1RXS J165124.4-442243 16 51 24.41 -44 22 43.68 5.11 ROSAT
3 2RXS J165138.6-441800 16 51 38.62 -44 18 00.36 7.34 ROSAT
4 1RXS J165123.3-443029 16 51 23.30 -44 30 29.16 11.12 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 MGPS J165109-441730 16 51 09.60 -44 17 30.84 3.24 MGPS2
2 V1005 Sco 16 51 02.18 -44 23 29.04 3.31 GCVS
3 HD 328883 16 50 52.73 -44 16 10.92 4.20 HDEC
PPM 762219 16 50 52.73 -44 16 10.56 4.21 PPM
WDS J16509-4416 16 50 54.00 -44 16 00.12 4.32 WDS
4 EUVE J1651-443 16 51 27.60 -44 21 33.12 5.20 EUVERAP2
5 HD 328884 16 50 33.50 -44 16 08.76 6.18 HDEC
6 HD 328897 16 50 58.32 -44 27 05.76 6.89 HDEC
7 HD 328877 16 51 04.75 -44 13 09.84 7.11 HDEC
8 SAO 227310 16 51 33.36 -44 25 36.84 8.11 SAO
CD-4411193 16 51 33.43 -44 25 38.64 8.14 ACRS
PPM 322282 16 51 33.43 -44 25 39.00 8.15 PPM
HD 328898 16 51 33.43 -44 25 39.00 8.15 HDEC
9 HD 328882 B 16 51 44.54 -44 21 59.04 8.25 HDEC
HD 328882 A 16 51 45.22 -44 21 57.24 8.36 HDEC
10 [WBH2005] G341.284+0.118 16 51 06.79 -44 11 12.12 9.11 WBHGP20CM
11 PMN J1651-4429a 16 51 08.59 -44 29 30.84 9.45 PMN
12 HD 328879 16 51 21.94 -44 11 26.52 9.64 HDEC
13 V889 SCO 16 51 10.44 -44 10 22.80 10.02 WOODEBCAT
14 PCCS2 030 G341.17-00.14 16 51 48.50 -44 26 39.12 10.86 PCCS030GHZ
15 HD 328878 16 51 19.30 -44 09 55.08 10.88 HDEC
16 HD 328893 16 49 58.22 -44 21 14.04 11.00 HDEC
17 PPM 762213 16 50 39.36 -44 30 36.72 11.01 PPM
HD 328896 16 50 39.29 -44 30 36.72 11.01 HDEC
18 HD 328885 16 50 05.04 -44 14 40.92 11.20 HDEC
19 SAO 227311 16 51 35.09 -44 29 36.24 11.34 SAO
CD-4411195 16 51 35.21 -44 29 35.88 11.35 ACRS
PPM 322284 16 51 35.23 -44 29 35.88 11.35 PPM
20 TD 341.1-00.1 16 51 31.30 -44 30 02.88 11.36 DIXON
SAO 227312 16 51 36.67 -44 29 36.60 11.51 SAO
PPM 322286 16 51 36.72 -44 29 36.60 11.51 PPM
21 HD 328903 16 51 05.35 -44 32 09.96 12.00 HDEC
22 SAO 227320 16 51 49.97 -44 28 08.40 12.01 SAO
PPM 322289 16 51 49.97 -44 28 08.76 12.01 PPM
NN 16 51 49.97 -44 28 08.76 12.01 ACRS
23 PMN J1651-4429b 16 51 42.41 -44 29 49.92 12.30 PMN
24 HD 328881 16 51 52.32 -44 11 44.52 12.69 HDEC
25 HD 328886 16 49 53.64 -44 15 23.76 12.73 HDEC
26 [WBH2005] G341.242+0.246 16 50 24.79 -44 08 15.00 13.47 WBHGP20CM
27 ADG341.1-00.2 16 51 51.41 -44 31 13.08 14.39 DIXON
28 ESO 164620-4406.0 16 49 56.40 -44 11 16.80 14.40 ESOUPPSALA
BH 200 16 49 55.99 -44 10 59.88 14.63 OPENCLUST
29 [WBH2005] G341.110-0.216 16 51 55.90 -44 32 00.96 15.52 WBHGP20CM

Penn State University Goddard Space Flight Center Swift