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 J1833.0-3840

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J1833.0-3840 Swift-XRT detections in the field for 4FGL J1833.0-3840

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 18 32 24.11 -38 41 34.10 4.27 (2.3 ± 0.3) x 10-2 89 8.987 8.603
2 18 33 22.98 -38 43 26.66 5.20 (8 ± 2) x 10-3 33 4.616 4.481
3 18 33 27.63 -38 45 06.18 5.70 (4.4 ± 1.3) x 10-3 17 3.358 3.291

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 33 29.40 -38 33 14.99 7.27 (2.1 ± 0.9) x 10-3 11 2.350 2.448
2 18 32 45.01 -38 49 22.83 5.76 (2.3 ± 1.0) x 10-3 10 2.341 2.272
3 18 33 10.34 -38 32 44.47 5.89 (1.8 ± 0.9) x 10-3 17 2.707 2.061

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J1833.0-3840 Swift-XRT image with known radio, optical and UV sources for 4FGL J1833.0-3840

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 XMMSL2 J183213.5-384356 18 32 13.70 -38 43 55.92 10.22 XMM-NEWTON

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 TGSSADR J183304.4-384046 18 33 04.51 -38 40 45.84 0.67 GMRTAS150M
SUMSS J183319-384313 18 33 19.20 -38 43 14.16 4.44 SUMSS
2 NVSS J183319-384314 18 33 19.39 -38 43 14.16 4.48 NVSS
3 HIP 90969 18 33 23.09 -38 43 12.00 5.00 HIPPARCOS
CD-3812895 18 33 23.09 -38 43 12.36 5.01 ACRS
HD 170867 18 33 23.09 -38 43 12.36 5.01 HIC
PPM 297868 18 33 23.09 -38 43 12.72 5.01 PPM
SAO 210296 18 33 23.28 -38 43 12.72 5.04 SAO
HR 6952 18 33 23.30 -38 43 13.08 5.05 BSC5P
PPM 297869 18 33 23.11 -38 43 33.60 5.23 PPM
HIP 90968 18 33 23.14 -38 43 33.24 5.23 HIPPARCOS
CD-3812895 18 33 23.14 -38 43 33.24 5.23 ACRS
HD 170868 18 33 23.09 -38 43 34.32 5.23 HIC
HR 6953 18 33 23.11 -38 43 33.96 5.23 BSC5P
SAO 210295 18 33 23.11 -38 43 34.32 5.24 SAO
4 WDS J18334-3844 18 33 24.00 -38 43 59.88 5.65 WDS
5 CGMW 4-1344 18 32 30.10 -38 41 17.88 6.42 CGMW
6 NVSS J183317-384609 18 33 17.90 -38 46 09.84 6.67 NVSS
GLEAM J183318-384608 18 33 18.19 -38 46 09.12 6.67 GLEAMEGCAT
TGSSADR J183317.7-384613 18 33 17.71 -38 46 14.16 6.71 GMRTAS150M
ATPMN J183317.8-384613 18 33 17.90 -38 46 14.16 6.72 ATPMNCAT
SUMSS J183317-384614 18 33 17.81 -38 46 14.16 6.73 SUMSS
7 NVSS J183327-384509 18 33 27.70 -38 45 09.00 6.96 NVSS
8 SPASS J183322-384600 18 33 22.39 -38 46 00.84 6.98 SPASS2P3GH
SUMSS J183327-384522 18 33 27.19 -38 45 21.96 7.06 SUMSS
9 PPM 297876 18 33 39.55 -38 39 07.20 7.31 PPM
CD-3812901 18 33 39.60 -38 39 07.56 7.32 ACRS
SAO 210301 18 33 39.67 -38 39 08.64 7.33 SAO
10 PPM 749799 18 32 23.95 -38 41 31.20 7.64 PPM
11 NVSS J183306-383211 18 33 06.91 -38 32 11.04 8.07 NVSS
12 PMN J1833-3848 18 33 17.40 -38 48 16.92 8.58 PMN
13 NVSS J183211-383820 18 32 11.59 -38 38 21.12 10.12 NVSS
14 NVSS J183255-385015 18 32 55.80 -38 50 16.08 10.14 NVSS
SUMSS J183255-385023 18 32 55.80 -38 50 24.00 10.27 SUMSS
CRATES J183317-384817 18 33 19.10 -38 49 58.08 10.27 CRATES
ATPMN J183319.0-384958 18 33 19.10 -38 49 59.16 10.28 ATPMNCAT
15 NVSS J183319-384959 18 33 19.20 -38 49 59.16 10.30 NVSS
16 NVSS J183345-384634 18 33 45.50 -38 46 33.96 10.52 NVSS
17 NVSS J183358-384043 18 33 58.90 -38 40 44.04 11.02 NVSS
18 CGMW 4-1483 18 33 52.20 -38 34 46.92 11.12 CGMW
19 NVSS J183228-385106 18 32 28.39 -38 51 06.12 12.76 NVSS
TGSSADR J183201.9-383032 18 32 01.99 -38 30 32.04 15.29 GMRTAS150M
SUMSS J183201-383031 18 32 01.90 -38 30 32.04 15.30 SUMSS
GLEAM J183202-383025 18 32 02.30 -38 30 24.84 15.32 GLEAMEGCAT
20 NVSS J183201-383030 18 32 01.90 -38 30 29.88 15.32 NVSS

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