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Author
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Topic: Wow! Is this the death of dark matter?
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Axman
Member Posts: 274
From: Derbyshire UK
Registered: Mar 2023
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posted 08-08-2023 08:36 AM
   
It looks like an astrophysical and cosmological revolution: Milgromian Modified Newtonian Dynamics may have just killed Dark Matter... A new study reports conclusive evidence for the breakdown of standard gravity in the low acceleration limit from a verifiable analysis of the orbital motions of long-period, widely separated, binary stars, usually referred to as wide binaries in astronomy and astrophysics. ...Wide binary anomalies are a disaster to the standard gravity and cosmology that rely on dark matter and dark energy concepts. Because gravity follows MOND, a large amount of dark matter in galaxies (and even in the universe) are no longer needed. This is also a big surprise to Chae who, like typical scientists, "believed in" dark matter until a few years ago. |
Headshot
Member Posts: 1255
From: Vancouver, WA, USA
Registered: Feb 2012
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posted 08-08-2023 10:01 AM
Where and when were the results of this study published? |
Robert Pearlman
Editor Posts: 51439
From: Houston, TX
Registered: Nov 1999
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posted 08-08-2023 10:05 AM
Per the linked article, the study was published in the 1 August 2023 issue of the Astrophysical Journal. |
Blackarrow
Member Posts: 3647
From: Belfast, United Kingdom
Registered: Feb 2002
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posted 08-08-2023 10:51 AM
The last line of the referenced article reads: "The implications for all of astrophysics are immense." Astrophysics is certainly not my field, but I'm inclined to repeat the well-known dictum that "extraordinary claims require extraordinary proof." I await developments with interest. |
Axman
Member Posts: 274
From: Derbyshire UK
Registered: Mar 2023
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posted 08-08-2023 11:29 AM
To tell you the truth, I'm not in the least surprised by this announcement. The data comes from Gaia satellite. The theory is old, but up until now had no proof that outweighed the ridiculous concept of 'dark matter'. Dark Matter is so elusive as to be invisible to every measurement ever taken by a cyclotron or any upgraded hadron collider!Once upon a time there were just four elements, then the Aether was de rigueur, as was Phlogiston. If, and I do say 'if' — the data needs to be thoroughly peer-reviewed (but I can tell you this now, this is NOT another cold-fusion or room temperature superconducting fiasco) — then it will open wide quite a few taken for granted simplistic but widely questioned tenets of modern physics. We can start by dumping string theory. We can go on to seriously question dark energy. And we could go back and take a good hard look at red light shift — does it really indicate an expansion of space? (Two things spring to mind: one where is the time element in this expansion? And why can't it be that light just loses energy over time — the lost energy expressed as a shift in wavelength? Anyway, exciting times. If it all fizzles out I'll be very disappointed as well as looking like an idiot. But if the data is confirmed then physics is on the cusp of a new revolution |
Axman
Member Posts: 274
From: Derbyshire UK
Registered: Mar 2023
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posted 12-02-2023 04:33 AM
Not exactly evidence, more of a further hint that cold dark matter is fictional comes in a new paper published in Monthly Notices of the Royal Astronomical Society.The abstract relates how a high local Hubble constant arises naturally due to gravitationally driven outflows from the observed Keenan-Barger-Cowie supervoid. (I'd like to see a mathematically driven theory where void spikes act in opposition to singularities - I think a lot of cosmological problems could be reconciled with a MOND theory incorporating void spikes.) |
Blackarrow
Member Posts: 3647
From: Belfast, United Kingdom
Registered: Feb 2002
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posted 12-02-2023 12:32 PM
Huh?? |
Axman
Member Posts: 274
From: Derbyshire UK
Registered: Mar 2023
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posted 12-02-2023 02:13 PM
Areas of cosmological low density driving matter outwards, in harmony with areas of high matter density sucking matter inwards, via a modified Newtonian gravity theory. Thus obviating the need for a theory of magically invisible matter (e.g. lambda cold dark matter).Void spikes are huge, tremendously gigantic areas of vacuum that actively drive matter away. In complete and equal opposition to singularities which are tiny to the point of non-existence areas of high density matter, which suck matter in. Is that a better explanation? |
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