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 J1904.9+0818

Field

Detected Excesses

Swift-XRT image of the field for 3FGL J1904.9+0818 Swift-XRT detections in the field for 3FGL J1904.9+0818

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 19 05 28.86 +08 20 09.96 6.41 (5 ± 2) x 10-3 16 3.625 3.164

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 19 04 56.52 +08 20 23.71 7.71 (3.6 ± 1.3) x 10-3 11 2.586 2.707

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 3FGL J1904.9+0818 Swift-XRT image with known radio, optical and UV sources for 3FGL J1904.9+0818

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 XMMSL2 J190528.6+082006 19 05 28.56 +08 20 06.00 7.67 XMM-NEWTON

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 NVSS J190437+081931 19 04 37.80 +08 19 31.08 5.20 NVSS
TGSSADR J190437.7+081931 19 04 37.70 +08 19 31.08 5.23 GMRTAS150M
2 NVSS J190442+082156 19 04 42.91 +08 21 56.88 5.24 NVSS
3 NVSS J190501+082551 19 05 01.80 +08 25 51.96 7.55 NVSS
4 NVSS J190452+081011 19 04 52.39 +08 10 10.92 8.30 NVSS
5 NVSS J190449+082706 19 04 49.20 +08 27 06.84 9.03 NVSS
GB6 J1905+0829 19 05 07.70 +08 29 43.08 11.59 GB6
WSRTGP 1902+0825 19 05 06.41 +08 29 47.04 11.59 WSRTGP
6 NVSS J190458+080645 19 04 58.51 +08 06 45.00 11.61 NVSS
VLSSr J190507.0+082954 19 05 07.01 +08 29 54.96 11.75 VLSSR
7 NVSS J190507+082958 19 05 07.10 +08 29 57.84 11.82 NVSS
TXS 1902+084 19 05 07.10 +08 29 58.92 11.82 TEXAS
TGSSADR J190507.1+082958 19 05 07.10 +08 29 58.92 11.82 GMRTAS150M
8 NVSS J190532+082823 19 05 32.11 +08 28 23.16 13.05 NVSS
9 NVSS J190539+082709 19 05 39.79 +08 27 10.08 13.52 NVSS

Penn State University Goddard Space Flight Center Swift