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 J1840.4-1705

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J1840.4-1705 Swift-XRT detections in the field for 4FGL J1840.4-1705


No detected excesses found.

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J1840.4-1705 Swift-XRT image with known radio, optical and UV sources for 4FGL J1840.4-1705


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
TGSSADR J184000.3-170650 18 40 00.31 -17 06 51.12 5.86 GMRTAS150M
1 NVSS J184000-170652 18 40 00.31 -17 06 51.84 5.88 NVSS
2 NSV 24542 18 40 48.60 -17 04 37.92 5.89 GCVSNSVARS
3 BD -17 5283 18 40 33.14 -17 00 00.00 5.97 HIC
HIP 91581 18 40 33.07 -16 59 57.48 6.00 HIPPARCOS
-17:5283 18 40 32.83 -16 59 52.08 6.07 NLTT
4 NVSS J183957-170312 18 39 57.10 -17 03 11.88 6.92 NVSS
5 NVSS J183952-170411 18 39 52.39 -17 04 10.92 7.74 NVSS
6 -17:5287 18 40 58.03 -17 09 44.28 9.08 NLTT
7 NVSS J183957-171550 18 39 57.31 -17 15 50.04 12.10 NVSS
8 NVSS J184111-165951 18 41 11.11 -16 59 52.08 12.58 NVSS
9 PPM 234881 18 40 57.55 -17 15 50.76 12.99 PPM
10 CGMW 3-2484 18 41 09.36 -17 13 49.08 13.56 CGMW
PGC 202743 18 41 09.41 -17 13 49.08 13.57 PGC2003
11 WDS J18396-1713 18 39 36.00 -17 13 00.12 13.71 WDS
12 CGMW 3-2483 18 41 08.78 -16 55 25.32 14.71 CGMW
PGC 202742 18 41 08.81 -16 55 24.96 14.72 PGC2003

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