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 J1816.7+4509

Field

Detected Excesses

Swift-XRT image of the field for 1FGL J1816.7+4509 Swift-XRT detections in the field for 1FGL J1816.7+4509

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 18 15 40.99 +45 10 45.07 4.63 (2.2 ± 0.5) x 10-3 40 5.189 4.713
2 18 16 52.56 +45 07 29.94 4.63 (2.4 ± 0.5) x 10-3 49 5.106 4.706
3 18 15 32.10 +45 12 35.10 4.71 (2.1 ± 0.5) x 10-3 34 4.858 4.557
4 18 16 59.67 +45 05 43.69 4.50 (1.9 ± 0.5) x 10-3 44 4.715 4.055
5 18 17 04.83 +45 06 05.05 4.48 (1.8 ± 0.5) x 10-3 41 4.689 3.906
6 18 16 08.30 +45 03 06.61 4.80 (1.5 ± 0.4) x 10-3 28 3.781 3.644
7 18 16 06.68 +45 06 51.39 4.81 (1.4 ± 0.4) x 10-3 28 3.486 3.504
8 18 16 31.81 +45 04 23.78 5.17 (1.2 ± 0.4) x 10-3 33 3.214 3.435
9 18 17 15.27 +45 17 03.81 4.81 (1.0 ± 0.3) x 10-3 29 3.244 3.111

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 18 16 32.26 +45 17 42.05 4.44 (10 ± 4) x 10-4 42 3.995 2.703
2 18 16 55.00 +45 14 40.65 5.00 (9 ± 3) x 10-4 27 2.604 2.684
3 18 16 19.96 +45 05 55.88 5.00 (9 ± 4) x 10-4 30 2.534 2.570
4 18 16 32.37 +45 17 39.95 4.43 (7 ± 3) x 10-4 44 2.516 2.127

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 1FGL J1816.7+4509 Swift-XRT image with known radio, optical and UV sources for 1FGL J1816.7+4509

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 CXOGSG J181648.2+451029 18 16 48.26 +45 10 29.64 1.46 CHANDRA
2 CXOGSG J181635.9+451033 18 16 35.90 +45 10 33.96 1.59 CHANDRA
3 CXOGSG J181639.4+450752 18 16 39.43 +45 07 52.32 1.67 CHANDRA
4 CXOGSG J181651.8+450834 18 16 51.86 +45 08 34.44 1.89 CHANDRA
5 CXOGSG J181654.4+450918 18 16 54.43 +45 09 18.72 2.12 CHANDRA
6 CXOGSG J181652.7+450729 18 16 52.73 +45 07 29.64 2.68 CHANDRA
SWIFT J181652.8+450728 18 16 52.82 +45 07 28.92 2.70 SWIFT
7 CXOGSG J181642.6+451214 18 16 42.70 +45 12 14.04 2.77 CHANDRA
8 CXOGSG J181632.4+451205 18 16 32.45 +45 12 05.04 3.16 CHANDRA
9 CXOGSG J181624.4+450952 18 16 24.43 +45 09 52.56 3.20 CHANDRA
10 CXOGSG J181658.0+450728 18 16 58.01 +45 07 28.56 3.39 CHANDRA
11 CXOGSG J181646.6+450555 18 16 46.66 +45 05 55.32 3.62 CHANDRA
12 CXOGSG J181635.8+451313 18 16 35.88 +45 13 13.44 3.94 CHANDRA
13 CXOGSG J181630.6+451314 18 16 30.65 +45 13 14.16 4.31 CHANDRA
14 CXOGSG J181641.4+451406 18 16 41.40 +45 14 07.08 4.66 CHANDRA
15 CXOGSG J181645.4+451406 18 16 45.43 +45 14 06.72 4.68 CHANDRA
16 CXOGSG J181659.4+450551 18 16 59.47 +45 05 51.72 4.69 CHANDRA
17 CXOGSG J181705.2+451217 18 17 05.26 +45 12 17.64 4.92 CHANDRA
18 CXOGSG J181618.5+451211 18 16 18.50 +45 12 11.52 5.02 CHANDRA
CXOGSG J181639.5+451427 18 16 39.55 +45 14 27.60 5.02 CHANDRA
19 CXOGSG J181705.1+450612 18 17 05.16 +45 06 12.24 5.17 CHANDRA
20 CXOGSG J181623.7+451409 18 16 23.74 +45 14 09.60 5.73 CHANDRA
21 CXOGSG J181618.2+451320 18 16 18.22 +45 13 20.64 5.76 CHANDRA
22 CXOGSG J181613.7+451301 18 16 13.75 +45 13 01.20 6.18 CHANDRA
23 CXOGSG J181717.6+450744 18 17 17.69 +45 07 44.40 6.45 CHANDRA
24 CXOGSG J181714.1+451245 18 17 14.14 +45 12 45.00 6.49 CHANDRA
25 CXOGSG J181604.8+450932 18 16 04.87 +45 09 32.40 6.62 CHANDRA
26 CXOGSG J181605.4+451207 18 16 05.50 +45 12 07.20 7.03 CHANDRA

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 VLSSr J181636.5+451023 18 16 36.60 +45 10 23.88 1.39 VLSSR
TGSSADR J181635.9+451033 18 16 36.00 +45 10 32.88 1.57 GMRTAS150M
PSR J1816+4510 18 16 35.90 +45 10 33.96 1.59 ATNFPULSAR
2 NVSS J181634+451729 18 16 34.70 +45 17 30.12 8.14 NVSS
3 NVSS J181559+451228 18 15 59.11 +45 12 28.08 8.20 NVSS
4 NVSS J181552+451331 18 15 52.01 +45 13 31.08 9.77 NVSS
5 NVSS J181659+451934 18 16 58.99 +45 19 33.96 10.52 NVSS
6 NVSS J181650+445801 18 16 50.59 +44 58 01.92 11.53 NVSS
7 NVSS J181707+445833 18 17 07.70 +44 58 32.88 11.79 NVSS

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