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 J1659.0-0140

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J1659.0-0140 Swift-XRT detections in the field for 4FGL J1659.0-0140

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 16 59 22.13 -01 41 11.02 5.64 (6 ± 2) x 10-3 23 3.614 3.197

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 59 34.36 -01 39 05.23 5.59 (3.8 ± 1.3) x 10-3 16 3.040 2.823
2 16 59 54.87 -01 40 23.97 6.93 (2.2 ± 1.0) x 10-3 9 2.283 2.274

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J1659.0-0140 Swift-XRT image with known radio, optical and UV sources for 4FGL J1659.0-0140


No known X-ray or gamma ray sources found.

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 HIP 83137 16 59 21.48 -01 41 15.72 4.48 HIPPARCOS
HD 153377 16 59 21.48 -01 41 15.72 4.48 HIC
PPM 179972 16 59 21.50 -01 41 15.36 4.49 PPM
BD-01 3278 16 59 21.50 -01 41 15.72 4.49 ACRS
SAO 141470 16 59 21.55 -01 41 14.64 4.49 SAO
2 PGC 1113291 16 58 43.99 -01 39 59.04 4.97 PGC2003
3 PPM 179971 16 59 06.12 -01 45 55.08 5.30 PPM
BD-01 3277 16 59 06.17 -01 45 55.44 5.31 ACRS
SAO 141467 16 59 06.14 -01 45 57.24 5.34 SAO
4 NVSS J165901-014754 16 59 01.51 -01 47 53.88 7.27 NVSS
5 NVSS J165931-014332 16 59 31.90 -01 43 32.88 7.62 NVSS
6 PPM 706669 16 59 37.42 -01 38 25.44 8.71 PPM
7 [SPT2015] ATCA J1659-0149 16 59 04.80 -01 49 24.96 8.77 FER2FUSRID
8 NVSS J165835-013357 16 58 36.00 -01 33 57.96 9.63 NVSS
9 PGC 1108766 16 58 54.91 -01 50 07.08 9.72 PGC2003
10 NVSS J165945-014339 16 59 45.31 -01 43 40.08 10.82 NVSS
[SPT2015] ATCA J1659-0143 16 59 45.60 -01 43 40.08 10.89 FER2FUSRID
11 ZW 1656-0145 16 58 35.76 -01 49 30.00 11.28 ZWCLUSTERS
TGSSADR J165923.7-015046 16 59 23.71 -01 50 45.96 11.29 GMRTAS150M
12 NVSS J165923-015047 16 59 23.59 -01 50 48.12 11.30 NVSS
GLEAM J165923-015052 16 59 23.30 -01 50 52.08 11.33 GLEAMEGCAT
TGSSADR J165920.9-015113 16 59 20.90 -01 51 12.96 11.41 GMRTAS150M
13 NVSS J165819-014306 16 58 19.10 -01 43 05.88 11.43 NVSS
14 NVSS J165920-015120 16 59 20.21 -01 51 20.16 11.46 NVSS
15 1655-0127L 16 58 32.81 -01 32 04.92 11.54 NORTH20CM
16 NVSS J165950-014054 16 59 50.40 -01 40 54.12 11.66 NVSS
17 PGC 1115643 16 59 43.70 -01 34 03.00 11.97 PGC2003
18 NVSS J165838-012855 16 58 38.40 -01 28 55.92 13.32 NVSS
GLEAM J165835-012842 16 58 35.21 -01 28 41.88 13.91 GLEAMEGCAT
19 PGC 1108643 16 58 23.50 -01 50 20.04 13.96 PGC2003

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