lightning interferometry
TRANSCRIPT
Lightning InterferometryNRAO Synthesis Imaging Workshop – 2014
Michael Stock
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Langmuir Laboratory2/114
Langmuir Laboratory3/114
Langmuir Laboratory4/114
Langmuir Laboratory5/114
Interferometer Site6/114
Interferometer Site7/114
Interferometer Site8/114
Interferometer Site9/114
The Instrument10/114
The Instrument
20132012
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Interferometric Map12/114
Interferometric Map13/114
Image Projection14/114
Image Projection15/114
Interferometric Map16/114
Interferometric Map17/114
Interferometric Map18/114
Video
Video
The Baselines21/114
The Baselines
Bandwidth: 20-80 MHz
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u-v Coverage
Bandwidth: 20-80 MHz
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u-v Coverage
Very Short Baseline Array
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u-v Coverage25/114
Point Spread Function26/114
Imaging
𝐼 𝑙, 𝑚 =
𝑢
𝑣
𝑉 𝑢, 𝑣 𝑒2𝜋𝑖(𝑢𝑙+𝑣𝑚)
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Imaging
𝐼 𝑙, 𝑚 =
𝑢
𝑣
𝑉 𝑢, 𝑣 𝑒2𝜋𝑖(𝑢𝑙+𝑣𝑚)
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Imaging
𝐼 𝑙,𝑚 =
𝐵
𝑓
𝑉 𝑓 𝑒2𝜋𝑖(𝑢𝑓𝑙+𝑣𝑓𝑚)
𝑢𝑓 =𝐵𝑥𝑐𝑓
𝑣𝑓 =𝐵𝑦
𝑐𝑓
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Imaging
𝐼 𝑙,𝑚 =
𝐵
𝑓
𝑉 𝑓 𝑒2𝜋𝑖(𝑢𝑓𝑙+𝑣𝑓𝑚)
𝑢𝑓 =𝐵𝑥𝑐𝑓
𝑣𝑓 =𝐵𝑦
𝑐𝑓
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Imaging
𝐼 𝑙, 𝑚 =
𝐵
𝑋𝐵(𝜏𝐵)
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Imaging
𝐼 𝑙, 𝑚 =
𝐵
𝑋𝐵(𝜏𝐵)
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Imaging
Bright Source
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Imaging
Point Spread
Bright Source
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Resolution35/114
Resolution36/114
Resolution37/114
Interferometric Mapping
Bright Source
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Interferometric Mapping
Bright Source
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Interferometric Mapping
Bright Source
Faint Source
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Interferometric Mapping41/114
What is Lightning?42/114
What is Lightning?43/114
What is Lightning?44/114
What is Lightning?45/114
What is Lightning?46/114
What is Lightning?47/114
What is Lightning?48/114
What is Lightning?49/114
What is Lightning?50/114
What is Lightning?
Almost all we know about lightning comes from measuring the electric field
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A Bolt from the Blue52/114
Photograph by Kara Swanson
A Bolt from the Blue53/114
Photograph by Kara Swanson
A Bolt from the Blue54/114
A Bolt from the Blue55/114
A Bolt from the Blue56/114
A Bolt from the Blue57/114
A Bolt from the Blue58/114
A Bolt from the Blue59/114
Video
Video
Lightning Leaders62/114
Lightning Leaders63/114
Lightning Leaders64/114
Lightning Leaders65/114
Lightning Leaders66/114
Lightning Leaders
Leader (10,000 K)
Streamer (< 1500 K)
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Lightning Leaders68/114
Lightning Leaders69/114
Lightning Leaders70/114
Lightning Leaders71/114
Lightning Leaders72/114
Lightning Leaders73/114
Lightning Leaders74/114
Lightning Leaders75/114
Lightning Leaders76/114
Lightning Leaders
Dark
Faint
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Lightning Leaders
Dark
Space Stem
Faint
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Lightning Leaders
Dark
Faint
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Lightning Leaders
Dark
Faint
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Lightning Leaders
Dark
Faint
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Lightning Leaders
Dark
Bright
Faint
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Negative Leader
Negative Leader
SubtitlePositive Leader
SubtitlePositive Leader
What is a Recoil Leader?
Recoil Leader?
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What is a Recoil Leader?88/114
What is a Recoil Leader?89/114
What is a Recoil Leader?90/114
What is a Recoil Leader?91/114
What is a Recoil Leader?92/114
What is a Recoil Leader?93/114
What is a Recoil Leader?94/114
What is a Recoil Leader?95/114
What is a Recoil Leader?96/114
What is a Recoil Leader?97/114
What is a Recoil Leader?98/114
What is a Recoil Leader?99/114
Recoil Leader
Recoil Leader
What is a Recoil Leader
Bolt from the Blue103/114
Inverted Intra-cloud104/114
Cloud-to-Ground105/114
Inverted Intra-cloud106/114
Leader Step Length
Dark
Faint
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Leader Step Length
Dark
Faint
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Normal Intra-cloud110/114
Large Intra-cloud
Large Intra-cloud
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