Comments and questions about the
APOD on the main view screen.
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johnnydeep
- Commodore
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Post
by johnnydeep » Sun Aug 18, 2024 4:49 pm
A quiescent prominence typically lasts about a month and may erupt in a Coronal Mass Ejection (CME)
Why the adjective "quiescent"? I assume not all prominences result in a CME, right? Do non-"quiescent" prominences end in CMEs more or less often than "quiescent" ones? And, what even does "quiescent" mean here? One in a less active state after beginning in a more active state?
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"To B̬̻̋̚o̞̮̚̚l̘̲̀᷾d̫͓᷅ͩḷ̯᷁ͮȳ͙᷊͠ Go......Beyond The F͇̤i̙̖e̤̟l̡͓d͈̹s̙͚ We Know."{ʲₒʰₙNYᵈₑᵉₚ}
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Chris Peterson
- Abominable Snowman
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Post
by Chris Peterson » Sun Aug 18, 2024 5:08 pm
johnnydeep wrote: ↑Sun Aug 18, 2024 4:49 pm
A quiescent prominence typically lasts about a month and may erupt in a Coronal Mass Ejection (CME)
Why the adjective "quiescent"? I assume not all prominences result in a CME, right? Do non-"quiescent" prominences end in CMEs more or less often than "quiescent" ones? And, what even does "quiescent" mean here? One in a less active state after beginning in a more active state?
"Quiescent" in this context is just the label used for prominences that are stable for days or weeks, rather than the time scale of hours with "active" prominences. Quiescent prominences may or may not evolve to active ones that can produce eruptions.
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johnnydeep
- Commodore
- Posts: 3267
- Joined: Sun Feb 20, 2011 8:57 pm
Post
by johnnydeep » Sun Aug 18, 2024 6:26 pm
Chris Peterson wrote: ↑Sun Aug 18, 2024 5:08 pm
johnnydeep wrote: ↑Sun Aug 18, 2024 4:49 pm
A quiescent prominence typically lasts about a month and may erupt in a Coronal Mass Ejection (CME)
Why the adjective "quiescent"? I assume not all prominences result in a CME, right? Do non-"quiescent" prominences end in CMEs more or less often than "quiescent" ones? And, what even does "quiescent" mean here? One in a less active state after beginning in a more active state?
"Quiescent" in this context is just the label used for prominences that are stable for days or weeks, rather than the time scale of hours with "active" prominences. Quiescent prominences may or may not evolve to active ones that can produce eruptions.
Ah, thanks. And I supposed active, shorter lived prominences can also produce CMEs (or not) just as often (or not) as quiescent ones?
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"To B̬̻̋̚o̞̮̚̚l̘̲̀᷾d̫͓᷅ͩḷ̯᷁ͮȳ͙᷊͠ Go......Beyond The F͇̤i̙̖e̤̟l̡͓d͈̹s̙͚ We Know."{ʲₒʰₙNYᵈₑᵉₚ}