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.

2FGL J1808.3-3356

Field

Detected Excesses
Swift-XRT image of the field for 2FGL J1808.3-3356 Swift-XRT detections in the field for 2FGL J1808.3-3356

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 18 08 52.67 -33 52 37.31 4.42 (1.6 ± 0.4) x 10-3 48 4.013 3.891
2 18 08 12.23 -33 57 28.65 4.32 (2.0 ± 0.5) x 10-3 64 3.913 3.750
3 18 08 22.13 -33 57 00.81 4.19 (1.6 ± 0.4) x 10-3 76 3.734 3.492
4 18 08 51.40 -33 56 47.27 4.31 (1.4 ± 0.4) x 10-3 57 4.173 3.430

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 08 18.13 -33 51 56.33 4.66 (1.1 ± 0.4) x 10-3 41 3.032 2.891
2 18 07 33.11 -33 57 49.38 4.41 (10 ± 4) x 10-4 26 2.631 2.597
3 18 07 47.60 -33 53 29.04 4.43 (8 ± 3) x 10-4 30 2.689 2.480
4 18 08 21.07 -33 58 12.81 4.10 (1.0 ± 0.4) x 10-3 89 2.879 2.479
5 18 08 16.64 -34 02 39.13 4.56 (8 ± 4) x 10-4 35 2.850 2.414
6 18 08 21.07 -33 58 12.81 4.10 (1.0 ± 0.4) x 10-3 89 2.957 2.402
7 18 08 31.83 -34 00 37.14 4.30 (8 ± 4) x 10-4 58 2.976 2.167

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 2FGL J1808.3-3356 Swift-XRT image with known radio, optical and UV sources for 2FGL J1808.3-3356


No known X-ray or gamma ray sources found.

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 [PME2013] J1808-3355 18 08 14.59 -33 55 03.00 1.86 AT2FGLUS
[SPT2015] ATCA J1808-3355 18 08 14.59 -33 55 03.00 1.87 FER2FUSRID
2 NVSS J180823-335946 18 08 23.71 -33 59 47.04 3.71 NVSS
3 NVSS J180841-335103 18 08 41.21 -33 51 03.96 6.40 NVSS
[PME2013] J1807-3355 18 07 51.31 -33 55 32.88 6.41 AT2FGLUS
4 NVSS J180751-335529 18 07 51.31 -33 55 30.00 6.42 NVSS
[SPT2015] ATCA J1807-3355 18 07 51.19 -33 55 31.08 6.43 FER2FUSRID
MGPS J180751-335524 18 07 51.10 -33 55 23.88 6.45 MGPS2
TGSSADR J180750.7-335535 18 07 50.81 -33 55 36.12 6.51 GMRTAS150M
5 NVSS J180751-334827 18 07 51.91 -33 48 28.08 9.87 NVSS
TGSSADR J180751.8-334825 18 07 51.91 -33 48 24.84 9.90 GMRTAS150M
MGPS J180751-334825 18 07 51.79 -33 48 25.92 9.90 MGPS2
6 NVSS J180914-335415 18 09 14.71 -33 54 15.12 11.07 NVSS
7 NVSS J180825-334430 18 08 25.30 -33 44 30.12 11.60 NVSS
TGSSADR J180825.2-334428 18 08 25.30 -33 44 27.96 11.63 GMRTAS150M
MGPS J180825-334419 18 08 25.30 -33 44 18.96 11.78 MGPS2
8 NVSS J180727-334903 18 07 27.60 -33 49 04.08 13.30 NVSS
TGSSADR J180727.6-334903 18 07 27.60 -33 49 03.00 13.30 GMRTAS150M
MGPS J180727-334903 18 07 27.50 -33 49 03.00 13.32 MGPS2
TGSSADR J180725.4-340725 18 07 25.51 -34 07 26.04 16.32 GMRTAS150M
MGPS J180725-340731 18 07 25.39 -34 07 31.08 16.38 MGPS2
9 NVSS J180725-340732 18 07 25.39 -34 07 32.16 16.40 NVSS

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