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 J1908.5-0138

Field

Detected Excesses
Swift-XRT image of the field for 1FGL J1908.5-0138 Swift-XRT detections in the field for 1FGL J1908.5-0138

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 19 08 43.57 -01 29 56.09 5.02 (4.5 ± 0.9) x 10-3 34 5.155 5.112
2 19 08 08.66 -01 26 18.03 6.65 (1.9 ± 0.6) x 10-3 15 3.037 3.423

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 36.77 -01 26 48.21 6.12 (1.4 ± 0.5) x 10-3 9 2.409 2.592
2 19 08 03.42 -01 27 06.66 6.12 (1.3 ± 0.5) x 10-3 12 2.555 2.468

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 1FGL J1908.5-0138 Swift-XRT image with known radio, optical and UV sources for 1FGL J1908.5-0138


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
1 NVSS J190830-014119 19 08 30.19 -01 41 18.96 3.23 NVSS
TGSSADR J190830.1-014120 19 08 30.19 -01 41 21.12 3.26 GMRTAS150M
2 NVSS J190844-013506 19 08 45.00 -01 35 06.00 4.46 NVSS
[SPT2015] ATCA J1908-0135 19 08 45.29 -01 35 04.92 4.54 FER2FUSRID
[PME2013] J1908-0135 19 08 45.29 -01 35 04.92 4.54 AT2FGLUS
3 VLSSr J190813.0-014102 19 08 13.10 -01 41 03.12 5.52 VLSSR
4 NVSS J190835-013140 19 08 35.11 -01 31 41.16 6.49 NVSS
5 NVSS J190842-014423 19 08 42.50 -01 44 22.92 6.81 NVSS
6 [PME2013] J1908-0133 19 08 58.20 -01 33 15.84 8.18 AT2FGLUS
[SPT2015] ATCA J1908-0133 19 08 58.20 -01 33 15.12 8.20 FER2FUSRID
7 NVSS J190800-014015 19 08 00.10 -01 40 15.96 8.20 NVSS
8 NVSS J190849-014646 19 08 49.61 -01 46 46.92 9.74 NVSS
TGSSADR J190907.2-013140 19 09 07.30 -01 31 41.16 10.96 GMRTAS150M
9 NVSS J190907-013132 19 09 07.20 -01 31 32.16 11.03 NVSS
10 OV-009.4 19 08 12.79 -01 48 11.16 11.14 DIXON
TGSSADR J190836.8-012643 19 08 36.91 -01 26 44.16 11.46 GMRTAS150M
11 NVSS J190836-012642 19 08 36.91 -01 26 43.08 11.47 NVSS
12 NVSS J190853-014851 19 08 54.00 -01 48 51.12 12.09 NVSS
TGSSADR J190854.1-014854 19 08 54.10 -01 48 54.00 12.15 GMRTAS150M
TGSSADR J190808.1-012626 19 08 08.11 -01 26 26.88 13.08 GMRTAS150M
13 NVSS J190808-012625 19 08 08.21 -01 26 25.08 13.09 NVSS
14 NVSS J190744-014511 19 07 44.90 -01 45 11.88 13.69 NVSS
15 NVSS J190801-015005 19 08 01.90 -01 50 04.92 14.11 NVSS

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