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.

1FGL J1639.5-5152

Field

Detected Excesses

Swift-XRT image of the field for 1FGL J1639.5-5152 Swift-XRT detections in the field for 1FGL J1639.5-5152

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 16 39 47.33 -51 59 47.53 4.26 (1.03 ± 0.13) x 10-2 85 8.152 7.880
2 16 39 26.25 -51 49 32.96 4.48 (7.8 ± 1.2) x 10-3 66 6.460 6.449

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 40 02.97 -51 48 09.30 5.44 (1.6 ± 0.6) x 10-3 22 2.615 2.630
2 16 39 20.69 -51 57 02.40 5.14 (1.7 ± 0.7) x 10-3 25 2.766 2.587
3 16 40 09.84 -51 45 33.31 5.05 (1.6 ± 0.6) x 10-3 21 2.563 2.451
4 16 39 14.10 -51 47 33.03 5.00 (1.6 ± 0.7) x 10-3 25 2.767 2.362
5 16 40 28.03 -51 49 07.85 5.40 (1.2 ± 0.5) x 10-3 13 2.431 2.208

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 1FGL J1639.5-5152 Swift-XRT image with known radio, optical and UV sources for 1FGL J1639.5-5152

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 HD 149813 16 39 46.97 -51 59 39.12 7.26 ROSAT
1RXS J163946.7-515941 16 39 46.70 -51 59 40.92 7.28 ROSAT
1RXS J163946.7-515941 16 39 46.70 -51 59 41.64 7.29 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 SAO 244034 16 39 26.64 -51 54 49.32 2.54 SAO
Rns 42370 16 39 26.59 -51 54 49.68 2.55 CPSTARS
PPM 345273 16 39 26.57 -51 54 50.04 2.56 PPM
2 CD-5110385 16 39 26.40 -51 49 34.68 3.33 ACRS
PPM 345272 16 39 26.40 -51 49 34.32 3.34 PPM
SAO 244035 16 39 26.35 -51 49 34.32 3.34 SAO
3 PMN J1639-5150 16 39 10.90 -51 50 24.00 4.34 PMN
4 MGPS J163906-514857 16 39 06.91 -51 48 56.88 5.68 MGPS2
5 MGPS J163921-515833 16 39 21.70 -51 58 33.96 6.27 MGPS2
6 HIP 81592 16 39 46.85 -51 59 38.76 7.25 HIPPARCOS
CD-5110391 16 39 46.94 -51 59 39.48 7.26 ACRS
HD 149813 16 39 46.90 -51 59 39.48 7.26 HIC
PPM 345282 16 39 46.97 -51 59 39.48 7.26 PPM
SAO 244042 16 39 46.85 -51 59 40.56 7.28 SAO
HIP 81594 16 39 47.52 -51 59 59.28 7.61 HIPPARCOS
CD-5110392 16 39 47.62 -51 59 59.64 7.61 ACRS
SAO 244044 16 39 47.64 -51 59 59.64 7.62 SAO
CCDM 16398-5200 16 39 47.59 -52 00 00.00 7.62 HIC
PPM 345284 16 39 47.62 -52 00 00.00 7.62 PPM
WDS J16398-5200 16 39 48.00 -52 00 00.00 7.64 WDS
7 SAO 244016 16 38 29.81 -51 50 35.52 10.27 SAO
PPM 345254 16 38 29.76 -51 50 35.52 10.28 PPM
8 SAO 244028 16 39 12.62 -52 03 47.88 11.69 SAO
PPM 345267 16 39 12.77 -52 03 51.12 11.73 PPM
9 MGPS J164020-514153 16 40 20.90 -51 41 53.16 12.88 MGPS2

Penn State University Goddard Space Flight Center Swift