Comparison of a new type of Dark Matter with the Milky Way and M31 grand rotation curves
In the electron Born self-energy (eBse) model, free electrons are of finite-size and possess both a rest mass, m e , as well as, a Born mass, m e B = 74,000 m e . The Born mass, which originates from the energy contained within the electric field that surrounds a finite-sized electron, serves as a D...
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Published in | Scientific reports Vol. 14; no. 1; pp. 24090 - 16 |
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Main Author | |
Format | Journal Article |
Language | English |
Published |
London
Nature Publishing Group UK
15.10.2024
Nature Publishing Group Nature Portfolio |
Subjects | |
Online Access | Get full text |
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Summary: | In the electron Born self-energy (eBse) model, free electrons are of finite-size and possess both a rest mass,
m
e
, as well as, a Born mass,
m
e
B
= 74,000
m
e
. The Born mass, which originates from the energy contained within the electric field that surrounds a finite-sized electron, serves as a Dark Matter (DM) particle in this theory (designated eBDM, electron Born Dark Matter). The equation of state for
m
e
B
is
w = -1
, which implies that two Born masses experience a
repulsive
gravitational interaction. This repulsive gravitational interaction stabilizes the formation of a DM halo of
m
e
B
particles, of typical halo size ~ 100 kpc, around a central mass
M
(e.g. a galaxy), where this gravitational stability arises from the competing attractive
M - m
e
B
and repulsive
m
e
B
-
m
e
B
interactions. A solution of the linearized Poisson-Boltzmann equation, for this system, allows one to derive an expression for the rotational velocity
V
eBDM
(R)
, as a function of radius
R
from the galactic center. A composite model composed of rotational velocity contributions from the galactic bulge, galactic disk, as well as,
V
eBDM
(R)
is found to provide a good description of the Grand Rotation Curves for the Milky Way and M31 galaxies. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 2045-2322 2045-2322 |
DOI: | 10.1038/s41598-024-74884-6 |