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 J1709.8-2026

Field

Detected Excesses

Swift-XRT image of the field for 1FGL J1709.8-2026 Swift-XRT detections in the field for 1FGL J1709.8-2026

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 17 09 50.25 -20 33 49.99 5.31 (8 ± 2) x 10-3 27 4.843 4.669
2 17 09 55.36 -20 19 51.74 4.44 (7 ± 2) x 10-3 52 5.758 4.267
3 17 09 52.63 -20 29 25.25 5.96 (4.2 ± 1.2) x 10-3 20 3.470 3.659

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 17 09 55.71 -20 19 59.37 4.37 (4.0 ± 1.4) x 10-3 53 4.787 2.860
2 17 10 17.32 -20 33 55.17 6.21 (2.5 ± 0.9) x 10-3 13 3.066 2.732
3 17 09 36.08 -20 29 38.93 8.27 (1.9 ± 0.8) x 10-3 8 2.261 2.332

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 1FGL J1709.8-2026 Swift-XRT image with known radio, optical and UV sources for 1FGL J1709.8-2026

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 1RXS J170951.7-201945 17 09 51.70 -20 19 45.48 6.34 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 NVSS J171009-202711 17 10 09.19 -20 27 11.16 4.18 NVSS
2 NVSS J170956-202048 17 09 56.90 -20 20 48.84 5.40 NVSS
GLEAM J171009-203026 17 10 09.70 -20 30 25.92 6.00 GLEAMEGCAT
1707-204 17 10 09.60 -20 30 29.88 6.03 MRC
WISH B1707.1-2026 17 10 09.70 -20 30 29.16 6.04 WISH
TGSSADR J171009.7-203029 17 10 09.70 -20 30 29.88 6.05 GMRTAS150M
3 NVSS J171009-203030 17 10 09.70 -20 30 29.88 6.06 NVSS
TXS 1707-204 17 10 09.79 -20 30 29.16 6.06 TEXAS
PMN J1710-2030 17 10 10.10 -20 30 25.92 6.07 PMN
VLSSr J171009.8-203030 17 10 09.91 -20 30 30.96 6.08 VLSSR
4 SPASS J171012-203010 17 10 12.70 -20 30 10.08 6.33 SPASS2P3GH
TGSSADR J170919.1-202347 17 09 19.10 -20 23 48.12 8.04 GMRTAS150M
5 NVSS J170919-202350 17 09 19.01 -20 23 49.92 8.05 NVSS
WISH B1706.3-2020 17 09 18.41 -20 23 58.92 8.14 WISH
6 NVSS J170915-202515 17 09 15.60 -20 25 14.88 8.58 NVSS
7 NVSS J171017-203235 17 10 17.40 -20 32 35.88 8.82 NVSS
8 NVSS J171011-203402 17 10 11.71 -20 34 03.00 9.19 NVSS
9 NVSS J171023-201725 17 10 23.30 -20 17 25.08 11.36 NVSS
10 NVSS J170903-203135 17 09 03.70 -20 31 36.12 12.59 NVSS
11 NVSS J170901-201948 17 09 01.30 -20 19 49.08 13.44 NVSS
TGSSADR J170901.2-201948 17 09 01.20 -20 19 49.08 13.46 GMRTAS150M
WISH B1706.0-2015 17 09 01.10 -20 19 42.96 13.53 WISH
12 NVSS J171039-201803 17 10 39.19 -20 18 02.88 13.68 NVSS
13 NVSS J170910-201455 17 09 10.10 -20 14 56.04 14.87 NVSS

Penn State University Goddard Space Flight Center Swift