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 J1858.1-2218

Field

Detected Excesses
Swift-XRT image of the field for 1FGL J1858.1-2218 Swift-XRT detections in the field for 1FGL J1858.1-2218

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 18 57 54.50 -22 28 46.14 5.89 (3.1 ± 1.0) x 10-3 19 2.835 3.225

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 58 01.32 -22 14 59.33 5.64 (2.3 ± 0.9) x 10-3 19 2.586 2.480
2 18 58 32.90 -22 26 29.18 6.12 (2.1 ± 0.9) x 10-3 11 2.361 2.421
3 18 57 54.46 -22 28 45.19 5.89 (2.1 ± 0.9) x 10-3 19 2.467 2.398
4 18 57 40.13 -22 16 43.35 5.76 (2.1 ± 0.9) x 10-3 14 2.506 2.244

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 1FGL J1858.1-2218 Swift-XRT image with known radio, optical and UV sources for 1FGL J1858.1-2218


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
[SPT2015] ATCA J1858-2219 18 58 04.49 -22 19 14.16 1.05 FER2FUSRID
[PME2013] J1858-2219 18 58 04.39 -22 19 14.16 1.05 AT2FGLUS
1 NVSS J185804-221914 18 58 04.30 -22 19 14.16 1.08 NVSS
2 GLEAM J185803-222003 18 58 03.70 -22 20 03.84 1.70 GLEAMEGCAT
WISH B1855.0-2224 18 58 04.10 -22 20 18.96 1.85 WISH
3 NVSS J185759-222019 18 57 59.11 -22 20 18.96 2.68 NVSS
TGSSADR J185805.2-222143 18 58 05.30 -22 21 43.92 3.05 GMRTAS150M
4 NVSS J185805-222145 18 58 05.30 -22 21 45.00 3.07 NVSS
5 PSR J1858-2216 18 58 00.00 -22 16 00.12 3.39 ATNFPULSAR
6 NVSS J185750-222355 18 57 50.21 -22 23 56.04 6.67 NVSS
7 NVSS J185741-221411 18 57 41.50 -22 14 12.12 7.75 NVSS
8 NVSS J185842-221832 18 58 42.31 -22 18 32.04 7.83 NVSS
TGSSADR J185842.4-221830 18 58 42.50 -22 18 29.88 7.86 GMRTAS150M
TGSSADR J185828.2-222714 18 58 28.30 -22 27 14.04 9.62 GMRTAS150M
GLEAM J185828-222711 18 58 28.80 -22 27 11.16 9.63 GLEAMEGCAT
9 NVSS J185828-222715 18 58 28.39 -22 27 15.12 9.65 NVSS
WISH B1855.4-2231 18 58 28.20 -22 27 20.16 9.70 WISH
WISH B1854.5-2227 18 57 32.59 -22 23 48.12 9.71 WISH
GLEAM J185732-222349 18 57 32.11 -22 23 48.84 9.81 GLEAMEGCAT
10 NVSS J185732-222359 18 57 32.40 -22 23 58.92 9.84 NVSS
TGSSADR J185732.3-222357 18 57 32.30 -22 23 57.84 9.84 GMRTAS150M
11 NVSS J185754-222903 18 57 54.19 -22 29 03.84 10.81 NVSS
12 NVSS J185859-221625 18 58 59.71 -22 16 24.96 12.06 NVSS
13 NVSS J185838-223010 18 58 38.71 -22 30 11.16 13.38 NVSS
14 NVSS J185722-222709 18 57 22.80 -22 27 09.00 13.48 NVSS
GLEAM J185725-222846 18 57 25.01 -22 28 45.84 14.18 GLEAMEGCAT
WISH B1854.4-2232 18 57 24.70 -22 28 50.16 14.28 WISH
TGSSADR J185724.7-222855 18 57 24.70 -22 28 54.84 14.34 GMRTAS150M
15 NVSS J185724-222856 18 57 24.79 -22 28 57.00 14.34 NVSS

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