On Thu, Jan 23, 2020 at 6:01 AM Lawrence Crowell < [email protected]> wrote:
*> There have been a couple of these unnova events. Some stars have just > winked out almost instantly. I would imagine this would ;produce a fair > amount of gravitational radiation, even if the whole star is gulped by a > black hole before EM radiation escapes. * > That's what some are saying, but wouldn't the collapse have to be pretty unsymmetrical for a significant amount of Gravitational Waves to be produced? > *> I would hazard to propose this gravitational wave blip might be due to > a small mass, maybe a planet, falling into a black hole.* > A stellar mass Black Hole couldn't swallow a planet in one gulp, tidal forces would tear it apart into dust long before it reached the Event Horizon. The tidal force is weaker for a supermassive Black Hole so a small strong nickel-iron asteroid might reach the Event Horizon more or less intact, but the mass would be so low I don't think the Gravitational Waves would amount to much, and the nearest supermassive is a long way away. John K Clark -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/everything-list/CAJPayv0P5oT%3DR4JUc3D51nSpfojL74YJnJfDFFXWFqdAOQDCUA%40mail.gmail.com.
