On Tuesday, January 28, 2020 at 2:45:20 PM UTC-6, Tomasz Rola wrote: > > On Thu, Jan 23, 2020 at 04:13:07AM -0800, Lawrence Crowell wrote: > > > > > > On Thursday, January 23, 2020 at 5:32:50 AM UTC-6, John Clark wrote: > > > > > > > > > > > > On Thu, Jan 23, 2020 at 6:01 AM Lawrence Crowell < > [email protected] > > > <javascript:>> 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. * > > Are those "unnova events" summarized somewhere? Gog only knows about some > kids' artefacts. Is there a pattern or are they more or less random? >
https://en.wikipedia.org/wiki/Failed_supernova > > [...] > > > 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. > > > > > > > A planet entering stellar mass black hole would be tidally disrupted and > it > > would be pulled into a streamer. The 1994 cometary impact on Jupiter is > a > > plausible model. A lump of matter crossing the event horizon will be > > physics of moving a holographic screen and there will be a gravitational > > wave. The details of this again I am not that privy to. Maybe the BH has > to > > be an intermediate mass BH. > > Could it be a relatively small BH swallowing something in Kuiper > Belt/van Oort Cloud? > > Could it be a signature of something being "unswallowed"? As in, some > kind of transportation means which have not been discovered yet on > this puny planet. Yeah, kind of, jumping out of "hyperspace" or > whatever it could be called. No, I am not a big fan of Star Wars, not > even a small fan (i.e. I am posting a serious question, even if movie > industry works hard to make it sound stupid). > > I doubt it is anything that exotic. If this should turn out be a black hole lurking in the Oort cloud we better get a space probe ready to launch ASAP! It could not be in the Kuiper belt, for the perturbation by gravity of planetary motion would be noticeable. There was some conjecture the so called Planet 9 some are looking for is a mini-black hole with Neptune mass. I sort of doubt this is the case. I am not sure how such a BH could have arisen. Star Wars was great when I was a teenager and they came out. Later these films lost some of their appeal, as character development is rather 2 dimensional. They are sort of space-operas with a mythic sort of aspect to them. I have not seen some of the later ones that have come out in the last few years, LC > -- > Regards, > Tomasz Rola > > -- > ** A C programmer asked whether computer had Buddha's nature. ** > ** As the answer, master did "rm -rif" on the programmer's home ** > ** directory. And then the C programmer became enlightened... ** > ** ** > ** Tomasz Rola mailto:[email protected] <javascript:> > ** > -- 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/499eeadc-9d29-4fdc-aa4b-0c08f6e90612%40googlegroups.com.
