tag:blogger.com,1999:blog-7315236707728759521.post7302418215871546130..comments2024-03-28T21:52:52.100-06:00Comments on Dispatches From Turtle Island: Unsolved Physics ProblemsAndrew Oh-Willekehttp://www.blogger.com/profile/02537151821869153861noreply@blogger.comBlogger7125tag:blogger.com,1999:blog-7315236707728759521.post-66260963548265199552022-01-05T14:00:24.167-07:002022-01-05T14:00:24.167-07:00"how much time did the third peak in the cmb ..."how much time did the third peak in the cmb take ?"<br /><br />10-17 million years. https://en.wikipedia.org/wiki/Timeline_of_the_early_universe#Cosmic_Dark_Age<br /><br />"could dark matter is comprised of primordial black holes and MOND both be correct?"<br /><br />No. The PBH distribution couldn't possibly be correct in that combination (i.e. there is no way that PBH's could be so highly concentrated in clusters). Also, PBH's are already all but ruled out.andrewhttps://www.blogger.com/profile/08172964121659914379noreply@blogger.comtag:blogger.com,1999:blog-7315236707728759521.post-31322923163531241162022-01-04T23:06:46.243-07:002022-01-04T23:06:46.243-07:00this may be of interest on the JWST Primordial bla...this may be of interest on the JWST Primordial black holes at high redshift<br /><br />The James Webb telescope’s mission will be to find the first galaxies that formed in the early universe and see stars forming planetary systems.<br /><br />Best of all, the existence of primordial black holes can be proven—or disproven—in the near future, courtesy of the James Webb Space Telescope and ESA’s Laser Interferometer Space Antenna (LISA) mission announced for the 2030s.<br /><br />If dark matter is comprised of primordial black holes, more stars and galaxies would have formed around them in the early universe—precisely the epoch that the James Webb telescope will be able to see.<br /><br />https://phys.org/news/2022-01-black-holes-dark-matterare.html<br /><br />https://arxiv.org/abs/2109.08701<br /><br />could dark matter is comprised of primordial black holes and MOND both be correct ?neohttps://www.blogger.com/profile/16769182614452171312noreply@blogger.comtag:blogger.com,1999:blog-7315236707728759521.post-11813658181402087382022-01-04T11:14:52.316-07:002022-01-04T11:14:52.316-07:00how much time did the third peak in the cmb take ...how much time did the third peak in the cmb take ?neohttps://www.blogger.com/profile/16769182614452171312noreply@blogger.comtag:blogger.com,1999:blog-7315236707728759521.post-15865168412576679142022-01-04T06:19:34.742-07:002022-01-04T06:19:34.742-07:00Very unlikely. Even if it was "stable" i...Very unlikely. Even if it was "stable" it would have a mean lifetime on the order of less than two minutes, due to beta decay of neutrons which a four neutron bound state would not mitigate the way that an atom with a mix of protons and neutrons in a bound nucleus does.andrewhttps://www.blogger.com/profile/08172964121659914379noreply@blogger.comtag:blogger.com,1999:blog-7315236707728759521.post-73922487462014363012022-01-03T22:37:25.490-07:002022-01-03T22:37:25.490-07:00 four-neutron bound state could explain third peak... four-neutron bound state could explain third peak in the cmb?neohttps://www.blogger.com/profile/16769182614452171312noreply@blogger.comtag:blogger.com,1999:blog-7315236707728759521.post-68700105038043372072022-01-03T17:15:22.997-07:002022-01-03T17:15:22.997-07:00Thanks for catching the error. Fixed.Thanks for catching the error. Fixed.andrewhttps://www.blogger.com/profile/08172964121659914379noreply@blogger.comtag:blogger.com,1999:blog-7315236707728759521.post-80427957256675406572022-01-03T15:44:34.431-07:002022-01-03T15:44:34.431-07:00In the last point, should neutrino actually be neu...In the last point, should neutrino actually be neutron?websterlinghttps://www.blogger.com/profile/15336870222771684025noreply@blogger.com