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 J1823.5-3454

Field

Detected Excesses

Swift-XRT image of the field for 1FGL J1823.5-3454 Swift-XRT detections in the field for 1FGL J1823.5-3454

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 18 23 38.84 -34 54 12.63 3.55 (6.7 ± 0.2) x 10-1 2045 46.350 43.470
2 18 22 57.52 -34 50 58.04 4.92 (1.1 ± 0.2) x 10-2 41 5.563 5.389

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 23 15.03 -34 44 21.09 7.97 (4 ± 2) x 10-3 9 2.393 2.781
2 18 23 08.23 -34 54 28.49 5.89 (2.9 ± 1.1) x 10-3 16 2.479 2.562

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 1FGL J1823.5-3454 Swift-XRT image with known radio, optical and UV sources for 1FGL J1823.5-3454

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 AXS_J182335-3454 18 23 35.16 -34 54 23.04 0.42 ASCA
2 XMMSL2 J182338.4-345413 18 23 38.52 -34 54 13.32 0.91 XMM-NEWTON
XMMSL2 J182338.4-345413 18 23 38.81 -34 54 16.20 0.92 XMM-NEWTON
[MML2015] 5BZU J1823-3454 18 23 38.59 -34 54 11.88 0.93 null
3 1RXS J182334.6-345352 18 23 34.61 -34 53 52.44 0.94 ROSAT
6dFGS J1823394-345419 18 23 39.36 -34 54 18.72 1.00 ROSAT
2RXS J182339.1-345412 18 23 39.17 -34 54 12.60 1.02 ROSAT
1RXS J182339.2-345412 18 23 39.19 -34 54 12.60 1.03 ROSAT
1RXS J182339.2-345412 18 23 39.19 -34 54 11.88 1.03 ROSAT
4 2E 1820.2-3454 18 23 38.14 -34 52 58.44 1.93 EINSTEIN
2E 1820.3-3454 18 23 38.11 -34 52 58.08 1.94 EINSTEIN
5 2RXS J182257.7-345101 18 22 57.79 -34 51 01.44 8.54 ROSAT
1RXS J182257.8-345100 18 22 57.79 -34 51 00.00 8.55 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
AT20G J182338-345412 18 23 38.59 -34 54 11.88 0.93 AT20G
[MML2015] 5BZU J1823-3454 18 23 38.59 -34 54 11.88 0.93 ROMABZCAT
1 NVSS J182338-345412 18 23 38.59 -34 54 11.88 0.94 NVSS
MGPS J182338-345410 18 23 38.59 -34 54 11.16 0.94 MGPS2
TGSSADR J182338.6-345409 18 23 38.59 -34 54 10.08 0.96 GMRTAS150M
2 PMN J1823-3453 18 23 36.70 -34 53 30.84 1.33 PMN
MGPS J182313-345358 18 23 13.30 -34 53 57.84 4.56 MGPS2
3 NVSS J182313-345356 18 23 13.20 -34 53 56.04 4.58 NVSS
4 NVSS J182406-345038 18 24 06.89 -34 50 38.04 7.74 NVSS
5 NVSS J182355-350149 18 23 55.39 -35 01 49.08 8.15 NVSS
SUMSS J182355-350150 18 23 55.61 -35 01 50.88 8.20 SUMSS
6 NVSS J182251-345529 18 22 52.01 -34 55 28.92 8.87 NVSS
MGPS J182251-345526 18 22 51.91 -34 55 26.04 8.88 MGPS2
MGPS J182309-350241 18 23 09.70 -35 02 40.92 9.44 MGPS2
7 NVSS J182345-350400 18 23 45.50 -35 04 00.84 9.45 NVSS
8 NVSS J182310-350248 18 23 10.20 -35 02 48.84 9.49 NVSS
GLEAM J182424-345247 18 24 24.89 -34 52 46.92 10.41 GLEAMEGCAT
SUMSS J182424-345241 18 24 24.89 -34 52 41.88 10.42 SUMSS
9 NVSS J182424-345243 18 24 24.89 -34 52 42.96 10.43 NVSS
TGSSADR J182424.9-345238 18 24 25.01 -34 52 39.00 10.45 GMRTAS150M
10 NVSS J182421-344935 18 24 21.31 -34 49 35.04 10.82 NVSS
11 NVSS J182315-344425 18 23 15.10 -34 44 25.08 11.17 NVSS
12 NVSS J182420-344824 18 24 20.59 -34 48 24.12 11.31 NVSS
13 NVSS J182315-344318 18 23 15.60 -34 43 18.84 12.17 NVSS
14 NVSS J182237-345001 18 22 37.10 -34 50 02.04 12.83 NVSS
SUMSS J182408-350628 18 24 08.90 -35 06 29.16 13.58 SUMSS
15 NVSS J182409-350627 18 24 09.10 -35 06 28.08 13.58 NVSS
16 NVSS J182252-344407 18 22 52.20 -34 44 08.16 13.85 NVSS

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