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 J1818.6-3206

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J1818.6-3206 Swift-XRT detections in the field for 4FGL J1818.6-3206


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 18 53.87 -32 02 22.12 7.48 (4 ± 2) x 10-3 9 2.331 2.153
2 18 19 06.31 -32 12 37.81 7.48 (4 ± 2) x 10-3 6 2.191 1.922
3 18 18 09.96 -32 10 05.65 7.71 (3 ± 2) x 10-3 8 2.363 1.684

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J1818.6-3206 Swift-XRT image with known radio, optical and UV sources for 4FGL J1818.6-3206

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 4XMMs J181857.0-320929 18 18 57.00 -32 09 29.88 4.54 XMM-NEWTON
4XMM J181856.9-320930 18 18 56.93 -32 09 30.96 4.54 XMM-NEWTON
4XMM J181856.9-320930 18 18 56.98 -32 09 30.60 4.55 XMM-NEWTON
2 4XMMs J181833.8-321158 18 18 33.84 -32 11 58.56 5.58 XMM-NEWTON
3 4XMM J181839.2-321336 18 18 39.29 -32 13 36.12 7.03 XMM-NEWTON
4XMMs J181839.2-321336 18 18 39.22 -32 13 36.48 7.04 XMM-NEWTON
4XMM J181839.2-321336 18 18 39.12 -32 13 37.20 7.05 XMM-NEWTON
4 4XMMs J181836.2-321353 18 18 36.19 -32 13 53.40 7.37 XMM-NEWTON
4XMM J181836.2-321354 18 18 36.24 -32 13 54.12 7.38 XMM-NEWTON
4XMM J181836.2-321354 18 18 36.17 -32 13 54.48 7.39 XMM-NEWTON
5 4XMM J181906.3-321237 18 19 06.22 -32 12 38.16 8.13 XMM-NEWTON
4XMMs J181906.3-321237 18 19 06.38 -32 12 37.44 8.15 XMM-NEWTON
4XMM J181906.3-321237 18 19 06.46 -32 12 37.80 8.16 XMM-NEWTON
6 4XMMs J181856.3-321436 18 18 56.38 -32 14 36.96 8.70 XMM-NEWTON
4XMM J181856.4-321438 18 18 56.45 -32 14 38.04 8.73 XMM-NEWTON
7 4XMM J181837.0-321522 18 18 37.08 -32 15 21.60 8.82 XMM-NEWTON
4XMMs J181837.0-321522 18 18 37.03 -32 15 22.32 8.83 XMM-NEWTON
4XMM J181837.0-321522 18 18 37.03 -32 15 24.48 8.87 XMM-NEWTON
8 4XMMs J181915.9-321321 18 19 15.91 -32 13 21.00 10.09 XMM-NEWTON
4XMM J181915.9-321320 18 19 16.01 -32 13 20.28 10.10 XMM-NEWTON
4XMM J181915.9-321320 18 19 16.01 -32 13 21.36 10.11 XMM-NEWTON
9 4XMM J181909.3-321603 18 19 09.36 -32 16 03.36 11.27 XMM-NEWTON
4XMMs J181909.4-321603 18 19 09.43 -32 16 03.00 11.27 XMM-NEWTON
10 4XMMs J181841.1-321802 18 18 41.16 -32 18 02.16 11.46 XMM-NEWTON
11 4XMMs J181926.0-321259 18 19 25.99 -32 12 59.40 11.56 XMM-NEWTON
12 4XMM J181932.9-321621 18 19 32.90 -32 16 20.64 14.76 XMM-NEWTON
4XMMs J181932.9-321621 18 19 32.95 -32 16 22.08 14.78 XMM-NEWTON
4XMM J181932.9-321621 18 19 32.95 -32 16 22.44 14.79 XMM-NEWTON

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 HD 319271 18 18 38.69 -32 04 17.76 2.32 HDEC
2 HD 319270 18 18 29.23 -32 03 05.76 4.23 HDEC
3 HD 319272 18 18 56.93 -32 09 31.68 4.55 HDEC
4 NVSS J181902-320609 18 19 02.50 -32 06 09.00 4.67 NVSS
5 V2965 Sgr 18 18 27.12 -32 10 41.52 5.01 GCVS
6 V2974 Sgr 18 18 39.22 -32 11 40.20 5.10 GCVS
7 PGC 205904 18 18 18.91 -32 09 10.08 5.27 PGC2003
8 NSV 10505 18 18 20.50 -32 03 23.04 5.32 GCVSNSVARS
9 CGMW 4-494 18 18 59.30 -32 11 15.00 6.13 CGMW
10 V3013 Sgr 18 19 12.60 -32 07 42.60 6.87 GCVS
11 WDS J18182-3212 18 18 12.00 -32 12 00.00 8.13 WDS
12 NVSS J181826-321437 18 18 26.40 -32 14 36.96 8.59 NVSS
MGPS J181825-321439 18 18 25.99 -32 14 39.12 8.65 MGPS2
13 OU-324 18 18 02.50 -32 01 48.00 9.37 DIXON
PPM 749576 18 18 01.20 -32 02 07.80 9.45 PPM
HD 319192 18 18 01.22 -32 02 07.08 9.46 HDEC
14 V2961 Sgr 18 18 19.15 -32 14 58.56 9.54 GCVS
15 V2989 Sgr 18 18 54.65 -32 16 14.88 10.12 GCVS
16 NSV 10589 18 19 27.50 -32 03 42.12 10.35 GCVSNSVARS
PPM 297540 18 19 28.68 -32 03 34.56 10.62 PPM
CD-3214005 18 19 28.68 -32 03 34.56 10.62 ACRS
SAO 209990 18 19 28.73 -32 03 35.28 10.62 SAO
MGPS J181911-315801 18 19 11.21 -31 58 00.84 10.74 MGPS2
17 NVSS J181911-315749 18 19 11.50 -31 57 48.96 10.94 NVSS
18 V2939 Sgr 18 18 02.62 -31 59 09.24 10.95 GCVS
19 HD 319269 18 18 52.51 -31 55 54.12 10.97 HDEC
20 H 2-46 18 18 37.30 -31 54 51.84 11.73 PLNEBULAE
ESO 181522-3156.0 18 18 37.20 -31 54 50.40 11.76 ESOUPPSALA
21 V3027 Sgr 18 19 31.90 -32 01 56.28 11.82 GCVS
22 V2918 Sgr 18 17 43.97 -32 08 56.04 12.22 GCVS
23 SAO 209967 18 17 51.58 -32 13 09.84 12.29 SAO
HD 167708 18 17 51.55 -32 13 09.84 12.29 HIC
PPM 297516 18 17 51.53 -32 13 09.84 12.30 PPM
CD-3213974 18 17 51.50 -32 13 09.84 12.30 ACRS
HIP 89661 18 17 51.48 -32 13 09.84 12.30 HIPPARCOS
24 CGMW 4-518 18 19 24.10 -32 14 48.84 12.36 CGMW
25 CGMW 4-456 18 17 58.30 -31 58 04.08 12.36 CGMW
PGC 205892 18 17 58.30 -31 58 04.08 12.36 PGC2003
26 V2948 Sgr 18 18 09.77 -32 17 22.20 12.61 GCVS
27 V3031 Sgr 18 19 35.90 -32 11 31.56 12.72 GCVS
28 PGC 205963 18 19 33.70 -32 13 41.16 13.30 PGC2003
29 V1286 Sgr 18 17 45.12 -31 59 31.56 13.71 GCVS

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