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.

3FGL J0420.6-3742

Field

Detected Excesses

Swift-XRT image of the field for 3FGL J0420.6-3742 Swift-XRT detections in the field for 3FGL J0420.6-3742


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 04 21 45.81 -37 46 51.96 7.09 (3.0 ± 1.0) x 10-3 11 3.012 2.994
2 04 21 01.52 -37 47 52.50 6.65 (2.6 ± 1.0) x 10-3 10 2.645 2.639
3 04 20 25.32 -37 44 39.43 7.27 (2.4 ± 1.0) x 10-3 10 2.421 2.482

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 3FGL J0420.6-3742 Swift-XRT image with known radio, optical and UV sources for 3FGL J0420.6-3742


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 NVSS J042035-374512 04 20 35.40 -37 45 11.88 2.44 NVSS
GLEAM J042026-374443 04 20 26.11 -37 44 44.16 3.20 GLEAMEGCAT
2 NVSS J042025-374443 04 20 25.20 -37 44 43.08 3.36 NVSS
[SPT2015] ATCA J0420-3744 04 20 25.10 -37 44 44.88 3.39 FER2FUSRID
[PME2013] J0420-3744 04 20 25.10 -37 44 47.04 3.41 AT2FGLUS
SUMSS J042024-374445 04 20 24.89 -37 44 44.88 3.41 SUMSS
TGSSADR J042024.6-374449 04 20 24.60 -37 44 49.92 3.50 GMRTAS150M
3 NVSS J042115-374137 04 21 15.60 -37 41 38.04 7.27 NVSS
4 NVSS J041954-374247 04 19 54.70 -37 42 47.88 8.83 NVSS
SUMSS J041954-374248 04 19 54.70 -37 42 48.96 8.84 SUMSS
TGSSADR J041954.6-374255 04 19 54.60 -37 42 56.16 8.86 GMRTAS150M
GLEAM J041954-374243 04 19 54.50 -37 42 43.92 8.89 GLEAMEGCAT
GLEAM J042008-373617 04 20 08.21 -37 36 16.92 9.04 GLEAMEGCAT
5 NVSS J042008-373609 04 20 08.90 -37 36 10.08 9.05 NVSS
SUMSS J042024-373259 04 20 24.41 -37 32 58.92 10.34 SUMSS
6 NVSS J042024-373257 04 20 24.41 -37 32 57.12 10.37 NVSS
SUMSS J041948-373914 04 19 48.79 -37 39 14.04 10.67 SUMSS
7 NVSS J041948-373912 04 19 48.79 -37 39 11.88 10.67 NVSS
8 NVSS J042007-375137 04 20 07.70 -37 51 37.08 10.74 NVSS
GLEAM J041947-373905 04 19 47.90 -37 39 06.12 10.87 GLEAMEGCAT
9 NVSS J042051-373105 04 20 51.60 -37 31 05.16 12.05 NVSS
GLEAM J041959-375217 04 19 59.81 -37 52 18.12 12.23 GLEAMEGCAT
10 NVSS J041959-375216 04 19 59.09 -37 52 15.96 12.30 NVSS
SUMSS J041958-375217 04 19 58.99 -37 52 17.04 12.33 SUMSS
TGSSADR J041958.8-375218 04 19 58.80 -37 52 18.84 12.37 GMRTAS150M
SUMSS J042133-375316 04 21 33.91 -37 53 16.08 14.95 SUMSS
11 NVSS J042134-375316 04 21 34.01 -37 53 17.16 14.98 NVSS
TGSSADR J042133.8-375321 04 21 33.79 -37 53 21.12 15.00 GMRTAS150M
GLEAM J042135-375318 04 21 35.21 -37 53 18.96 15.17 GLEAMEGCAT

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