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.

3FGL J1830.8-3136

Field

Detected Excesses

Swift-XRT image of the field for 3FGL J1830.8-3136 Swift-XRT detections in the field for 3FGL J1830.8-3136


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 31 04.85 -31 26 33.48 5.70 (3.9 ± 1.3) x 10-3 16 3.276 2.981
2 18 31 45.60 -31 40 22.92 7.48 (3.5 ± 1.2) x 10-3 11 2.725 2.970

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 3FGL J1830.8-3136 Swift-XRT image with known radio, optical and UV sources for 3FGL J1830.8-3136


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
TGSSADR J183038.7-313504 18 30 38.71 -31 35 03.84 2.75 GMRTAS150M
1 NVSS J183038-313506 18 30 38.59 -31 35 06.00 2.75 NVSS
2 NVSS J183033-313608 18 30 33.60 -31 36 09.00 3.61 NVSS
3 NVSS J183109-313731 18 31 09.00 -31 37 31.08 4.16 NVSS
4 NVSS J183027-313738 18 30 27.70 -31 37 39.00 5.08 NVSS
TGSSADR J183027.5-313737 18 30 27.60 -31 37 36.84 5.10 GMRTAS150M
MGPS J183027-313740 18 30 27.60 -31 37 40.08 5.12 MGPS2
5 NVSS J183015-313601 18 30 15.00 -31 36 01.08 7.56 NVSS
6 NVSS J183035-312832 18 30 36.00 -31 28 32.16 8.23 NVSS
7 [PME2013] J1830-312A 18 30 49.51 -31 26 57.84 9.20 AT2FGLUS
TGSSADR J183049.4-312657 18 30 49.39 -31 26 57.84 9.21 GMRTAS150M
[SPT2015] ATCA J1830-312A 18 30 49.61 -31 26 56.04 9.23 FER2FUSRID
MGPS J183107-312731 18 31 07.61 -31 27 30.96 9.38 MGPS2
[SPT2015] ATCA J1831-3127 18 31 07.51 -31 27 29.16 9.40 FER2FUSRID
MGPS J183046-312646 18 30 46.61 -31 26 47.04 9.42 MGPS2
8 NVSS J183046-312646 18 30 46.80 -31 26 45.96 9.42 NVSS
TGSSADR J183107.9-312729 18 31 07.99 -31 27 29.16 9.44 GMRTAS150M
9 NVSS J183107-312720 18 31 07.30 -31 27 20.88 9.51 NVSS
TGSSADR J183046.2-312641 18 30 46.30 -31 26 40.92 9.52 GMRTAS150M
[PME2013] J1831-3127 18 31 07.20 -31 27 19.08 9.54 AT2FGLUS
[SPT2015] ATCA J1830-3126 18 30 45.91 -31 26 39.84 9.54 FER2FUSRID
[PME2013] J1830-3126 18 30 46.01 -31 26 39.12 9.56 AT2FGLUS
10 PKS J1830-3126 18 30 52.51 -31 26 27.96 9.70 PKSCAT90
PKS1827-314 18 30 52.30 -31 26 22.92 9.78 DIXON
PMN J1830-3126 18 30 53.50 -31 26 12.12 9.98 PMN
11 [SPT2015] ATCA J1831-3126 18 31 04.70 -31 26 31.92 10.09 FER2FUSRID
12 NVSS J183116-312706 18 31 16.80 -31 27 06.84 10.63 NVSS
13 NVSS J183102-312544 18 31 02.50 -31 25 45.12 10.72 NVSS
MGPS J183102-312542 18 31 02.30 -31 25 41.88 10.75 MGPS2
[PME2013] J1831-3125 18 31 02.30 -31 25 41.16 10.77 AT2FGLUS
TGSSADR J183102.2-312539 18 31 02.30 -31 25 40.08 10.79 GMRTAS150M
14 TXS 1827-314 18 30 42.19 -31 24 42.84 11.59 TEXAS
15 NVSS J183032-314754 18 30 32.30 -31 47 53.88 12.37 NVSS
16 OU-347 18 31 40.39 -31 28 49.08 12.91 DIXON
17 NVSS J183139-312521 18 31 39.91 -31 25 22.08 15.08 NVSS

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