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.

1FGL J1835.3+1345

Field

Detected Excesses

Swift-XRT image of the field for 1FGL J1835.3+1345 Swift-XRT detections in the field for 1FGL J1835.3+1345

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 18 35 22.07 +13 57 31.94 4.60 (1.9 ± 0.3) x 10-2 59 7.389 7.228
2 18 35 39.46 +13 50 48.00 6.21 (7 ± 2) x 10-3 21 3.985 4.190
3 18 35 35.80 +13 48 31.00 5.96 (4.7 ± 1.4) x 10-3 20 3.347 3.386

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 1FGL J1835.3+1345 Swift-XRT image with known radio, optical and UV sources for 1FGL J1835.3+1345

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 2RXS J183521.8+135748 18 35 21.89 +13 57 48.24 11.88 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1833+1346 18 35 35.81 +13 48 38.88 4.35 NORTH6CM
[SPT2015] VLA J1835+1348 18 35 35.40 +13 48 48.96 4.38 FER2FUSRID
GB6 J1835+1348 18 35 35.90 +13 48 42.12 4.41 GB6
VLSSr J183535.0+134856 18 35 35.11 +13 48 56.88 4.42 VLSSR
1 NVSS J183535+134853 18 35 35.30 +13 48 52.92 4.42 NVSS
TGSSADR J183535.2+134857 18 35 35.21 +13 48 57.96 4.45 GMRTAS150M
TXS 1833+137 18 35 35.40 +13 48 56.88 4.48 TEXAS
2 NVSS J183534+134944 18 35 34.20 +13 49 44.04 4.86 NVSS
3 OU+155 18 35 35.50 +13 52 30.00 7.36 DIXON
4 NVSS J183453+134017 18 34 53.21 +13 40 18.12 8.95 NVSS
TGSSADR J183453.0+135449 18 34 52.99 +13 54 50.04 11.32 GMRTAS150M
5 NVSS J183452+135452 18 34 52.99 +13 54 51.84 11.35 NVSS

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