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Author: bighairymike   😊 😞
Number: of 221 
Subject: Here is a link to an interesting article.... ht
Date: 12/14/2023 8:26 AM
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Here is a link to an interesting article....

https://archive.is/20231016191541/https://www.news...

Under the discussion of magnetars, the article says this,

Neutron stars become magnetars when their interior somehow whips up the strongest magnetic fields in the universe – a million billion times more powerful than Earth’s field. So tourists should be wary: even a thousand kilometres away from SGR 1935+2154, the intense magnetism would shred your atoms into a fine mist. From a safe distance, though, we will be treated to strange, shimmering patterns of light that coruscate across the surface. The magnetar warps space-time around it so that light travelling nearby will be refracted into a great cosmic hall of mirrors.


Magnetism warping space-time? This is the first I heard of this. Have I just missed something that it otherwise well known?
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Author: sutton ✶  😊 😞
Number: of 48466 
Subject: Re: Here is a link to an interesting article.... ht
Date: 12/14/2023 9:47 AM
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"Magnetism warping space-time?"

Well, gravity certainly does. So the question may be paraphrased as, how does gravity relate to magnetism?

From physics.stackexchange.com:

https://physics.stackexchange.com/questions/136752...

TL;DR: summary seems to be: "Magnetic effect on gravity: In technical terms: yes. For practical purposes: no."

But, the reason for "practical purposes being no" is the disparity in strengthen between magnetism and gravity: " This answer suggests that if you could somehow generate a magnetic field that was strong enough, you could create artificial gravity. That would have to be an unimaginably strong field to produce anything practical, however"

And so when you're talking about "the strongest magnetic fields in the universe", then, well, I guess, sounds good, maybe.

--sutton
Dammit, Jim, I'm a doctor, not a physicist

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Author: onepoorguy 🐝  😊 😞
Number: of 48466 
Subject: Re: Here is a link to an interesting article.... ht
Date: 12/14/2023 1:33 PM
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A tricky question, and one I'm not equipped to answer thoroughly. I did a bit of reading, and it appears that while gravity bends space/time, magnetic fields attempt to flatten it out. However, a magnetar is a neutron star, which is very dense, and provides a significant warp of space/time due to its mass. Those would be competing effects.

This was the shortest, simplest explanation I could find. It is really fascinating, and I didn't know about this.

https://www.science.org/content/article/magnetism-...
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