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 J1811.0-2725

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J1811.0-2725 Swift-XRT detections in the field for 4FGL J1811.0-2725

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 18 10 28.35 -27 29 54.55 4.27 (1.2 ± 0.2) x 10-2 73 7.584 7.331

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 09 48.82 -27 28 33.55 4.86 (1.4 ± 0.7) x 10-3 17 2.493 2.094

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J1811.0-2725 Swift-XRT image with known radio, optical and UV sources for 4FGL J1811.0-2725

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 1WGA J1811.2-2727 18 11 15.10 -27 27 06.48 3.15 ROSAT
2 CXOGSG J181108.8-271418 18 11 08.83 -27 14 18.24 11.08 CHANDRA
3 1WGA J1811.4-2735 18 11 29.59 -27 35 12.84 11.47 ROSAT
CXOGSG J181110.3-271355 18 11 10.30 -27 13 55.56 11.50 CHANDRA
4 CXOGSG J181110.7-271345 18 11 10.70 -27 13 45.12 11.68 CHANDRA
5 1WGA J1811.7-2733 18 11 42.70 -27 33 24.12 11.88 ROSAT
6 CXOGSG J181115.7-271337 18 11 15.74 -27 13 37.20 12.01 CHANDRA
7 CXOGSG J181126.4-271403 18 11 26.47 -27 14 03.84 12.37 CHANDRA
CXOGSG J181127.1-271357 18 11 27.19 -27 13 57.00 12.53 CHANDRA
8 1RXS J181149.7-271721 18 11 49.70 -27 17 21.12 13.00 ROSAT
9 CXOGSG J181142.7-271448 18 11 42.77 -27 14 48.84 13.67 CHANDRA

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 HD 317207 18 10 59.83 -27 23 24.36 2.07 HDEC
2 NVSS J181108-272744 18 11 08.40 -27 27 43.92 2.65 NVSS
3 NVSS J181049-272817 18 10 49.70 -27 28 17.04 4.26 NVSS
4 NVSS J181101-272942 18 11 01.01 -27 29 43.08 4.42 NVSS
5 NVSS J181111-272109 18 11 11.81 -27 21 10.08 4.56 NVSS
6 SAO 186408 18 10 40.01 -27 25 10.20 5.20 SAO
PPM 267993 18 10 39.94 -27 25 09.84 5.22 PPM
7 NVSS J181048-272938 18 10 48.19 -27 29 39.12 5.49 NVSS
8 V5811 Sgr 18 11 05.23 -27 30 51.12 5.55 GCVS
9 NVSS J181038-272347 18 10 38.90 -27 23 47.04 5.67 NVSS
TGSSADR J181039.0-272338 18 10 39.10 -27 23 38.04 5.67 GMRTAS150M
MGPS J181038-272336 18 10 38.81 -27 23 35.88 5.74 MGPS2
10 WDS J18116-2724 18 11 36.00 -27 23 60.00 7.35 WDS
11 CV J181030.8-272726 18 10 30.86 -27 27 26.64 7.53 CVCAT
12 SAO 186398 18 10 28.99 -27 24 48.96 7.66 SAO
PPM 267984 18 10 28.94 -27 24 48.60 7.67 PPM
HD 317205 18 10 28.92 -27 24 48.60 7.68 HDEC
13 V5590 Sgr 18 11 03.70 -27 17 29.40 7.83 GCVS
14 HD 317206 18 10 32.54 -27 30 10.80 8.40 HDEC
PPM 267989 18 10 32.54 -27 30 10.80 8.40 PPM
CD-2712507 18 10 32.52 -27 30 11.16 8.41 ACRS
SAO 186401 18 10 32.50 -27 30 12.60 8.43 SAO
15 NVSS J181127-273205 18 11 27.70 -27 32 06.00 8.65 NVSS
16 V5810 Sgr 18 11 04.10 -27 15 29.88 9.82 GCVS
17 PPM 733762 18 11 38.88 -27 18 29.88 10.42 PPM
18 NSV 10314 18 11 01.80 -27 14 22.92 10.94 GCVSNSVARS
19 NVSS J181143-273222 18 11 43.80 -27 32 21.84 11.39 NVSS
20 V5806 Sgr 18 10 16.94 -27 30 29.88 11.54 GCVS
21 NVSS J181122-273606 18 11 22.61 -27 36 06.12 11.59 NVSS
22 NVSS J181023-271736 18 10 23.30 -27 17 35.88 11.79 NVSS
23 HD 315348 18 11 22.03 -27 14 06.72 11.95 HDEC
24 CGMW 4-249 18 11 36.91 -27 15 55.08 11.99 CGMW
25 HD 317208 18 11 55.08 -27 21 28.44 12.09 HDEC
26 V5805 Sgr 18 10 10.01 -27 22 54.84 12.10 GCVS
27 NVSS J181139-271528 18 11 39.50 -27 15 29.16 12.69 NVSS
TGSSADR J181139.4-271527 18 11 39.50 -27 15 27.00 12.71 GMRTAS150M
MGPS J181140-271513 18 11 40.30 -27 15 12.96 12.99 MGPS2
TGSSADR J181141.9-271452 18 11 42.00 -27 14 52.08 13.51 GMRTAS150M
28 NVSS J181142-271448 18 11 42.19 -27 14 48.12 13.59 NVSS
TGSSADR J181153.5-273339 18 11 53.50 -27 33 39.96 13.89 GMRTAS150M
29 NVSS J181153-273338 18 11 53.71 -27 33 38.16 13.91 NVSS
30 KFL 11 18 10 12.31 -27 16 36.12 14.31 PLNEBULAE

Penn State University Goddard Space Flight Center Swift