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 J1845.8-2521

Field

Detected Excesses

Swift-XRT image of the field for 4FGL J1845.8-2521 Swift-XRT detections in the field for 4FGL J1845.8-2521


No detected excesses found.

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 18 46 06.84 -25 19 34.65 7.09 (5 ± 2) x 10-3 13 2.674 2.754

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 4FGL J1845.8-2521 Swift-XRT image with known radio, optical and UV sources for 4FGL J1845.8-2521

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 1RXS J184529.5-252613 18 45 29.50 -25 26 12.84 6.85 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 V1934 Sgr 18 45 58.99 -25 18 06.48 3.79 GCVS
[SPT2015] ATCA J1846-2524 18 46 00.50 -25 24 46.08 3.84 FER2FUSRID
2 NVSS J184601-252446 18 46 01.30 -25 24 47.16 3.95 NVSS
3 PPM 734377 18 45 32.83 -25 18 45.72 5.04 PPM
4 PMN J1845-2517 18 45 33.19 -25 17 30.12 5.77 PMN
5 PGC 208352 18 45 33.31 -25 14 24.00 8.22 PGC2003
6 PGC 208373 18 45 48.60 -25 12 57.96 8.57 PGC2003
7 PPM 734404 18 46 31.68 -25 21 00.72 9.08 PPM
8 PGC 208412 18 46 17.30 -25 29 12.84 9.65 PGC2003
9 NVSS J184602-251143 18 46 02.81 -25 11 44.16 10.11 NVSS
10 NVSS J184516-251400 18 45 16.20 -25 13 59.88 10.96 NVSS
11 NSV 11285 18 45 09.79 -25 15 50.04 11.01 GCVSNSVARS
12 NVSS J184549-253303 18 45 49.70 -25 33 02.88 11.55 NVSS
13 PGC 208408 18 46 13.39 -25 10 41.16 11.90 PGC2003
14 PPM 734402 18 46 28.58 -25 11 16.08 13.23 PPM
WDS J18465-2511 18 46 30.00 -25 10 59.88 13.64 WDS
15 PGC 208326 18 45 10.01 -25 11 24.00 13.80 PGC2003
16 PMN J1844-2513 18 44 58.70 -25 13 51.96 14.18 PMN

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