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 J1822.6-2502

Field

Detected Excesses

Swift-XRT image of the field for 4FGL J1822.6-2502 Swift-XRT detections in the field for 4FGL J1822.6-2502


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 22 44.46 -25 08 56.58 6.65 (5 ± 2) x 10-3 11 2.302 2.241
2 18 22 37.81 -25 05 40.64 6.04 (5 ± 2) x 10-3 19 2.453 2.189

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 4FGL J1822.6-2502 Swift-XRT image with known radio, optical and UV sources for 4FGL J1822.6-2502

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 1WGA J1822.8-2506 18 22 48.91 -25 06 18.00 4.46 ROSAT
2 1RXS J182200.5-251317 18 22 00.50 -25 13 17.04 13.95 ROSAT
2RXS J182200.6-251318 18 22 00.60 -25 13 18.48 13.95 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 CD-2513063 18 22 36.00 -24 58 26.04 4.05 ACRS
HD 315564 18 22 36.00 -24 58 26.04 4.05 HDEC
PPM 268326 18 22 36.00 -24 58 26.04 4.05 PPM
SAO 186735 18 22 35.98 -24 58 24.96 4.07 SAO
2 V3808 Sgr 18 22 31.97 -25 07 32.16 5.36 GCVS
3 NVSS J182301-250438 18 23 01.99 -25 04 37.92 5.62 NVSS
4 NSV 24411 18 22 19.99 -24 58 41.16 5.73 GCVSNSVARS
5 NVSS J182240-250815 18 22 40.20 -25 08 16.08 5.84 NVSS
6 GP Sgr 18 22 17.04 -24 58 34.68 6.32 GCVS
7 GQ Sgr 18 22 40.75 -24 53 26.88 8.99 GCVS
8 NVSS J182254-251113 18 22 54.70 -25 11 12.84 9.47 NVSS
9 SAO 186722 18 22 14.06 -24 54 19.44 9.90 SAO
PPM 268312 18 22 13.92 -24 54 20.52 9.90 PPM
CD-2414244 18 22 13.92 -24 54 20.16 9.91 ACRS
168709 18 22 13.63 -24 54 17.64 9.98 WACKERLING
10 HD 315620 18 23 26.86 -25 01 03.36 10.89 HDEC
11 NVSS J182219-251243 18 22 19.80 -25 12 43.92 11.20 NVSS
TXS 1819-252 18 22 20.11 -25 12 45.00 11.20 TEXAS
TGSSADR J182219.8-251244 18 22 19.80 -25 12 43.92 11.21 GMRTAS150M
12 V511 Sgr 18 21 48.65 -25 01 13.44 11.51 GCVS
13 NVSS J182246-245056 18 22 46.90 -24 50 56.04 11.62 NVSS
14 HD 315565 18 21 53.40 -24 56 47.76 11.80 HDEC
15 HD 168710 18 22 10.25 -25 14 13.20 13.49 BATTEN
16 NVSS J182158-251224 18 21 58.10 -25 12 24.84 13.64 NVSS
17 SAO 186718 18 22 07.01 -25 14 24.36 14.02 SAO
XZ Sgr 18 22 06.86 -25 14 23.64 14.03 HIC
CD-2513054 18 22 06.79 -25 14 23.64 14.03 ACRS
PPM 268310 18 22 06.79 -25 14 23.64 14.04 PPM
HIP 90019 18 22 06.77 -25 14 23.64 14.04 HIPPARCOS
XZ Sgr 18 22 06.77 -25 14 24.00 14.04 GCVS
18 V1969 Sgr 18 21 46.87 -25 11 40.92 15.03 GCVS

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