On Wednesday, January 22, 2020 at 2:47:22 PM UTC-6, John Clark wrote: > > At 9:02:11 PM Eastern Standard Time on Monday January 13 the 2 LIGO > detectors in the USA and the VIRGO detector in Italy noticed an unusual > Gravitational Wave, unlike merging Neutron Stars that produce waves that > last about 30 seconds and merging stellar mass Black Holes that last about > a second this one only lasted for 14 milliseconds. Nobody is quite sure > what caused it, the best guess is a unnovae, they have been observed > optically a few times in stars too large to go supernova and instead > collapse directly into Black Holes and just turn off; no supernova has ever > been observed from a star larger than 18 solar masses although stars well > over 100 solar masses exist. As it happened this event occurred on a area > in the sky near to but not precisely at Betelgeuse's location, but > Betelgeuse is still there and probably isn't massive enough to be a > unnovae, its eventual fate is probably just a boring old Supernova. And the > wave could be caused by something else, 14 milliseconds is pretty short > even for a unnovae. > > Gravitational-Wave Candidate Event Database > <https://gracedb.ligo.org/superevents/S200114f/> > > John K Clark >
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. I would hazard to propose this gravitational wave blip might be due to a small mass, maybe a planet, falling into a black hole. Rogue planets are now thought to populate the region around a 4.1 million solar mass BH at SgrA in the Milky Way center. There is evidence this central region is populated by BHs in the 10 solar mass range as well. So the prospect for a planetary mass falling into some BH is fairly high. This may repeat in other galaxies, so I would conjecture a planet or planetary mass fell into a BH somewhere in another galaxy. LC > > > -- 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/fa8a325b-a530-4ea3-ab5f-29cdedb77de0%40googlegroups.com.
