Friday, December 18, 2020

Turn out the lights on dark-matter

Turtle Island for years has been banging on about modified-Newton to explain gravity in galaxies. The core of the problem is that galaxies spin too fast for the matter observed (so far), both in Newtonian and in Einsteinian dynamics.

The classic fudge factor is to propose some as-yet unobserved form of matter; chiefly, inherently "weakly-interacting" matter ?particles (WIMP). How to observe that, is the rub; even a neutrino might bump a proton under observation someday. WIMPy candidates keep getting constrained out. I've no real hope that, say, better clocks will do more than constrain them out further. Dark matter is the Planet Vulcan of the [1915-2015] twentieth century. Or the luminiferous aether thereof, take your pick.

Mordechai Milgrom in Israel, back in the 1980s, proposed an Einsteinian solution: gravity works differently under variant acceleration. In his "Modified-Newton Dynamic", low acceleration means higher gravity. MoND also predicts an external gravitational field, made up of all the masses elsewhere. I hadn't paid attention because few commenters outside the Turtle have paid attention, who is not always on-point himself; also, ProjectRho doesn't approve MoND, and I dread that wedgie from its housecat. So I wasn't prepared to rule out some mostly inert paraparticle like D Star Hexaquark. Although even then I knew we were reaching.

We might now have evidence of the external field effect. Triton Station has been doing a victory-lap.

I don't blame people for proposing dark-matter and for trying to find it. Like aether and Vulcan we can at least come up with testable options. But at some point, you need to hunt where the ducks are. MOND seems where the ducks are, from this point on, so physicists should next constrain that.

THE SEARCH FOR BIGFOOT 12/21: AXIONS!! blah blah blah we imposed a constraint. That's academese for "we ain't found sh!t". I'm reading a lot of this in <3Science! press lately. BEETLEJUICE, BEETLEJUICE 1/22: A tighter constraint 2/8: Garbage in...

IGNORE TURTLE-TRITON 11/25: Milgrom is wrong.

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