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Old 02-May-2008, 11:45 PM
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Smile A Request For Examples of Disrupted Stars...

Are there any photographic examples of main sequence stars, 1 solar mass or higher, being torn open and exposing the core or even tearing the core open? I guess even one being blasted by unimaginable stellar winds would count as well.

Kind of hard to imagine anywhere where this would happen where we could see it. At least in the visible spectrum.

(Sorry, I feel like having my mind boggled today.)
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Old 03-May-2008, 01:49 AM
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I don't think anything short of a collision of two stars could cause any such violence, and the odds against that are enormously long. I have never heard of any observation of such an event.
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Old 03-May-2008, 02:24 PM
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The closest I can think of would be the unfortunate companion of the Black Widow pulsar, being eroded by its ferocious high-energy wind (but I vaguely recall that to be well below a solar mass, at least these days). Beyond that in both mass and distance are the handful of X-ray flares from otherwise normal galactic nuclei, which fit in energy and duration with expectations for the tidal disruption and subsequent accretion of a star by a previously quiescent massive central black hole.
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Old 04-May-2008, 06:43 PM
trinitree88 trinitree88 is offline
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Question

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Originally Posted by BigDon View Post
Are there any photographic examples of main sequence stars, 1 solar mass or higher, being torn open and exposing the core or even tearing the core open? I guess even one being blasted by unimaginable stellar winds would count as well.

Kind of hard to imagine anywhere where this would happen where we could see it. At least in the visible spectrum.

(Sorry, I feel like having my mind boggled today.)
BigDon. Years ago I read an article in The Los Alamos Journal of Science...circa 1986??..(they print two copies a year I think, Spring and Fall...)...about a pulsar passing through the Earth in a simulation. Perhaps the author(s) have made a similar simulation for a star. (The Earth survived the experience in the computer, which was a surprise, but it took a long time for the melted crust to anneal....I had imagined such a collision to be annihilation of the planet, with a debris ring of asteroids...not so.) pete
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Old 07-May-2008, 02:13 PM
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Extreme Stars, At the Edge of Creation [2001] -- by James Kaler

...will increase your understanding of stellar evolution and diversity by orders of magnitude.
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Old 09-May-2008, 02:52 AM
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Hey guys,

This seems to be close.

Stars Orbiting Close to Black Holes Flattened like Hot Pancakes
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Old 17-May-2008, 02:45 AM
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Well maybe not torn open but Wolf-Rayet stars are trying hard nonetheless
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Old 18-May-2008, 09:35 PM
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My guess is from 10 million light years away, class M, K and G stars are invisable. If one was disrupted, it might look like an O, B, A or F star (for a few hours?) until the wound healed, or the stars rotation turned it, so about the normal number of photons were hitting our telescope lens = essentially none. Since collisions are very rare, perhaps none have occured within 10 million light years for us to observe.

I suppose the neutron star that collided with Earth, passed though the diameter and kept going. If exiting at 0.0001 c, I would think a very large exit hole and considerable heating of most of the rest of Earth. Neil

Last edited by neilzero : 19-May-2008 at 02:56 AM. Reason: modest changed to considerable
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Old 19-May-2008, 01:25 AM
Hornblower Hornblower is offline
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Quote:
Originally Posted by trinitree88 View Post
BigDon. Years ago I read an article in The Los Alamos Journal of Science...circa 1986??..(they print two copies a year I think, Spring and Fall...)...about a pulsar passing through the Earth in a simulation. Perhaps the author(s) have made a similar simulation for a star. (The Earth survived the experience in the computer, which was a surprise, but it took a long time for the melted crust to anneal....I had imagined such a collision to be annihilation of the planet, with a debris ring of asteroids...not so.) pete
That exercise was GIGO - Garbage In, Garbage Out. The authors neglected the fact that Earth would be inside the Roche limit around the neutron star long before contact, and would be torn asunder.
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Old 19-May-2008, 02:57 AM
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Inside roche limit LONG before impact? At one million miles per hour, maybe one hour: I think Earth would reassemble much as before minutes after the neutron star was a million miles past penetration, plus out going would tend to reverse the disassembly while incoming. Probably no human survivors and it would be worse if the impact occured at minimum possible speed = 15 kilometers per second?
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