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 J1824.2-0621

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J1824.2-0621 Swift-XRT detections in the field for 4FGL J1824.2-0621

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 18 24 47.10 -06 20 33.28 5.11 (10 ± 2) x 10-3 29 4.247 3.966

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 24 21.51 -06 12 52.58 6.93 (3.1 ± 1.3) x 10-3 9 2.349 2.433
2 18 23 44.46 -06 17 32.75 6.93 (2.8 ± 1.2) x 10-3 12 2.519 2.324
3 18 24 01.52 -06 12 03.66 6.65 (3.1 ± 1.4) x 10-3 12 2.482 2.291

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J1824.2-0621 Swift-XRT image with known radio, optical and UV sources for 4FGL J1824.2-0621

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 2RXS J182447.0-062036 18 24 47.09 -06 20 36.24 7.70 ROSAT
1RXS J182447.1-062036 18 24 47.09 -06 20 35.88 7.70 ROSAT
1RXS J182447.1-062036 18 24 47.09 -06 20 35.88 7.70 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 NVSS J182415-061826 18 24 15.41 -06 18 25.92 3.03 NVSS
2 NVSS J182407-062632 18 24 07.80 -06 26 33.00 5.52 NVSS
TGSSADR J182415.5-062744 18 24 15.50 -06 27 43.92 6.29 GMRTAS150M
3 NVSS J182415-062745 18 24 15.41 -06 27 45.00 6.30 NVSS
4 WDS J18248-0621 18 24 48.00 -06 20 60.00 7.89 WDS
BD -06 4756 18 24 49.20 -06 21 12.24 8.18 HIC
HIP 90246 18 24 49.20 -06 21 13.32 8.18 HIPPARCOS
PPM 201733 18 24 49.22 -06 21 14.04 8.18 PPM
5 NVSS J182403-062923 18 24 03.41 -06 29 24.00 8.56 NVSS
6 NVSS J182425-061259 18 24 25.61 -06 12 59.04 8.78 NVSS
7 NVSS J182423-061105 18 24 22.99 -06 11 04.92 10.50 NVSS
TGSSADR J182457.7-061743 18 24 57.79 -06 17 44.16 10.96 GMRTAS150M
8 NVSS J182457-061746 18 24 57.91 -06 17 47.04 10.97 NVSS
9 NVSS J182438-063153 18 24 38.50 -06 31 53.04 11.80 NVSS
10 PPM 201709 18 23 34.94 -06 15 03.24 12.11 PPM
HD 169155 18 23 34.94 -06 15 03.24 12.11 HIC
BD-06 4751 18 23 34.94 -06 15 03.24 12.11 ACRS
SAO 142266 18 23 34.97 -06 15 02.16 12.11 SAO
HIP 90131 18 23 34.94 -06 15 02.88 12.11 HIPPARCOS
11 NVSS J182348-061051 18 23 48.00 -06 10 50.88 12.72 NVSS

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