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 32.35 +45 12 31.47 4.03 (3.9 ± 0.5) x 10-3 92 8.416 7.984
2 18 15 40.89 +45 10 42.62 3.96 (2.9 ± 0.4) x 10-3 92 6.838 6.698
3 18 16 53.19 +45 07 33.05 4.07 (2.3 ± 0.4) x 10-3 95 5.172 5.440
4 18 16 32.20 +45 04 29.73 4.10 (1.5 ± 0.3) x 10-3 83 4.027 4.500
5 18 17 00.09 +45 05 41.26 4.02 (1.6 ± 0.4) x 10-3 80 4.439 4.469
6 18 17 04.76 +45 06 05.49 3.98 (1.7 ± 0.4) x 10-3 81 4.844 4.439
7 18 17 15.08 +45 17 06.68 4.14 (1.3 ± 0.3) x 10-3 53 4.235 4.128
8 18 16 08.35 +45 03 01.04 4.10 (1.2 ± 0.3) x 10-3 62 4.235 3.880
9 18 16 07.37 +45 06 47.10 4.06 (1.1 ± 0.3) x 10-3 72 3.599 3.502
10 18 17 51.37 +45 11 03.52 5.00 (8 ± 2) x 10-4 24 3.120 3.416
11 18 16 32.40 +45 17 42.90 3.96 (1.1 ± 0.3) x 10-3 79 3.999 3.378

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 50.06 +45 01 59.34 4.20 (8 ± 3) x 10-4 46 2.898 2.800

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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