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.

4FGL J1908.8-0131

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J1908.8-0131 Swift-XRT detections in the field for 4FGL J1908.8-0131

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 19 08 43.35 -01 29 54.11 5.00 (5.0 ± 1.0) x 10-3 40 5.327 5.133

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 08 36.60 -01 26 58.66 6.65 (1.3 ± 0.5) x 10-3 13 2.417 2.372
2 19 08 46.87 -01 27 43.96 5.89 (1.2 ± 0.6) x 10-3 12 2.651 2.182

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J1908.8-0131 Swift-XRT image with known radio, optical and UV sources for 4FGL J1908.8-0131

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 1RXS J190803.7-011956 19 08 03.70 -01 19 56.64 16.75 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 [SPT2015] ATCA J1908-0133 19 08 58.20 -01 33 15.12 2.32 FER2FUSRID
[PME2013] J1908-0133 19 08 58.20 -01 33 15.84 2.33 AT2FGLUS
[SPT2015] ATCA J1908-0135 19 08 45.29 -01 35 04.92 3.51 FER2FUSRID
[PME2013] J1908-0135 19 08 45.29 -01 35 04.92 3.51 AT2FGLUS
2 NVSS J190844-013506 19 08 45.00 -01 35 06.00 3.56 NVSS
3 NVSS J190835-013140 19 08 35.11 -01 31 41.16 3.93 NVSS
4 NVSS J190907-013132 19 09 07.20 -01 31 32.16 4.12 NVSS
TGSSADR J190907.2-013140 19 09 07.30 -01 31 41.16 4.13 GMRTAS150M
TGSSADR J190836.8-012643 19 08 36.91 -01 26 44.16 6.19 GMRTAS150M
5 NVSS J190836-012642 19 08 36.91 -01 26 43.08 6.20 NVSS
6 NVSS J190830-014119 19 08 30.19 -01 41 18.96 10.77 NVSS
TGSSADR J190830.1-014120 19 08 30.19 -01 41 21.12 10.80 GMRTAS150M
7 BD-01 3666 19 08 46.32 -01 20 11.76 11.71 ACRS
PPM 180566 19 08 46.32 -01 20 11.40 11.72 PPM
8 NVSS J190808-012625 19 08 08.21 -01 26 25.08 11.95 NVSS
TGSSADR J190808.1-012626 19 08 08.11 -01 26 26.88 11.96 GMRTAS150M
9 HIP 94092 19 09 15.72 -01 42 42.12 12.51 HIPPARCOS
BD-01 3668 19 09 15.72 -01 42 42.12 12.51 ACRS
PPM 180569 19 09 15.74 -01 42 42.12 12.51 PPM
HD 178575 19 09 15.72 -01 42 42.48 12.52 HIC
SAO 143079 19 09 15.70 -01 42 43.92 12.53 SAO
10 VLSSr J190813.0-014102 19 08 13.10 -01 41 03.12 13.17 VLSSR
11 NVSS J190807-012130 19 08 07.30 -01 21 30.96 15.01 NVSS

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