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What is the Universe expanding into..
What is the Universe expanding into..
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View Poll Results: Do you think there was anything before the big bang?
I don't think there was anything before the Big Bang 23 9.50%
I think something existed before the Big Bang 100 41.32%
I don't think the big bang happened 27 11.16%
I think the universe is part of a mutiverse 117 48.35%
Multiple Choice Poll. Voters: 242. You may not vote on this poll

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Old Yesterday, 11:28 PM   #4631
Bonsai is online now Bonsai  Europe
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What is the Universe expanding into..
Magnetars and neutron stars interest me. Magnetars have mag field strengths of 10^9 to 10^10 T (the Schwinger limit starts at 10^18)

Magnetar - Wikipedia

Last edited by Bonsai; Yesterday at 11:31 PM.
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Old Yesterday, 11:35 PM   #4632
Discopete is offline Discopete  Canada
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has a magnetar ever been located?
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Old Today, 12:06 AM   #4633
Galu is online now Galu  Scotland
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A list of known magnetars is given in Bonsai's Wikipedia link.

As of November 2020, there are 29 known magnetars in our Milky Way galaxy.

Magnetars were thought to be responsible for Fast Radio Bursts (FRBs) and this was confirmed in April 2020 when multiple radio telescopes detected an FRB from a magnetar near the center of the Milky Way.

The dozens of other FRBs detected before that had all come from far outside our galaxy, making it impossible to track their source.
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Old Today, 12:20 AM   #4634
geezoID is offline geezoID  United States
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The universes are all the same.

My old brain is contracting.

I like listening to stuff.

No clue how much.

@1
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Old Today, 12:45 AM   #4635
Discopete is offline Discopete  Canada
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Quote:
Originally Posted by Galu View Post
A list of known magnetars is given in Bonsai's Wikipedia link.

As of November 2020, there are 29 known magnetars in our Milky Way galaxy.

Magnetars were thought to be responsible for Fast Radio Bursts (FRBs) and this was confirmed in April 2020 when multiple radio telescopes detected an FRB from a magnetar near the center of the Milky Way.

The dozens of other FRBs detected before that had all come from far outside our galaxy, making it impossible to track their source.
Oh thanks. It slipped my notice
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Old Today, 09:42 AM   #4636
Bonsai is online now Bonsai  Europe
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What is the Universe expanding into..
The mag field strengths are so strong that atoms are squeezed into long thin shapes so anything within a thousand miles gets ripped to shreds. The mag field is still well below the Schwinger limit (10^18 T which is when free space is no longer magnetically linear anymore)

The other interesting objects are quasars.

BTW just finishing off reading Stephen Weinberg’s ‘The First Three Minutes’. Written in the mid 1970’s it’s a bit outdated, but there’s a prologue at the back that pulls much of it into the mid 1990’s. (Useful math addendum at the back of the book as well)
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