scholarly journals Dynamical evolution of dark matter admixed neutron stars

2022 ◽  
Vol 105 (2) ◽  
Author(s):  
Troy Gleason ◽  
Ben Brown ◽  
Ben Kain
Keyword(s):  
Dark Matter ◽  
Neutron Stars ◽  
Dynamical Evolution

scholarly journals Constraining mirror dark matter inside neutron stars

2021 ◽  
Vol 32 ◽  
pp. 100796
Author(s):  
Raul Ciancarella ◽  
Francesco Pannarale ◽  
Andrea Addazi ◽  
Antonino Marcianò
Keyword(s):  
Dark Matter ◽  
Neutron Stars

scholarly journals Neutron stars as probes of dark matter

2020 ◽  
Vol 29 (14) ◽  
pp. 2043028
Author(s):  
M. Ángeles Pérez-García ◽  
Joseph Silk
Keyword(s):  
General Relativity ◽  
Dark Matter ◽  
Equation Of State ◽  
Neutron Stars ◽  
Internal Structure ◽  
Stellar Objects ◽  
Ordinary Matter ◽  
Stable Solutions ◽  
The Universe

Neutron Stars (NSs) are compact stellar objects that are stable solutions in General Relativity. Their internal structure is usually described using an equation of state that involves the presence of ordinary matter and its interactions. However there is now a large consensus that an elusive sector of matter in the universe, described as dark matter, remains as yet undiscovered. In such a case, NSs should contain both, baryonic and dark matter. We argue that depending on the nature of the dark matter and in certain circumstances, the two matter components would form a mixture inside NSs that could trigger further changes, some of them observable. The very existence of NSs constrains the nature and interactions of dark matter in the universe.

scholarly journals Neutron stars as dark matter probes

2010 ◽  
Vol 81 (12) ◽  
Author(s):  
Arnaud de Lavallaz ◽  
Malcolm Fairbairn
Keyword(s):  
Dark Matter ◽  
Neutron Stars

Effects of dark matter on the upper bound mass of neutron stars

2020 ◽  
Vol 28 ◽  
pp. 100507
Author(s):  
Sandeep S. Kumar ◽  
Arun Kenath ◽  
C. Sivaram
Keyword(s):  
Dark Matter ◽  
Neutron Stars ◽  
Upper Bound

scholarly journals Population Synthesis of Old Neutron Stars in the Galaxy

2000 ◽  
Vol 195 ◽  
pp. 181-188
Author(s):  
S. B. Popov ◽  
M. Colpi ◽  
A. Treves ◽  
R. Turolla ◽  
V. M. Lipunov ◽  
...  
Keyword(s):  
Neutron Stars ◽  
Ambient Medium ◽  
Dynamical Evolution ◽  
Low Velocity ◽  
Mean Velocity ◽  
Secular Evolution ◽  
Sky Survey ◽  
The Galaxy ◽  
The Mean ◽  
Statistical Sample

The paucity of old, isolated accreting neutron stars in ROSAT observations is used to derive a lower limit on the mean velocity of neutron stars at birth. The secular evolution of the population is simulated following the paths of a statistical sample of stars for different values of the initial kick velocity, drawn from an isotropic, Gaussian distribution with mean velocity 0 ≤ 〈V〉 ≤ 550 km s−1. The spin-down, induced by dipole losses and the interaction with the ambient medium, is tracked together with the dynamical evolution in the Galactic potential, allowing for the determination of the fraction of stars which are, at present, in each of the four possible stages: Ejector, Propeller, Accretor, and Georotator. Taking from the ROSAT All-Sky Survey an upper limit of ~ 10 accreting neutron stars within ~ 140 pc from the Sun, we infer a lower bound for the mean kick velocity, 〈V〉 ≳ 200–300 km s−1. The same conclusion is reached for both a constant (B ~ 1012 G) and an exponentially decaying magnetic field with a timescale ~ 109 yr. Present results, moreover, constrain the fraction of low-velocity stars which could have escaped pulsar statistics to ≲ 1%.

scholarly journals Dark Matter, Neutron Stars, and Strange Quark Matter

2010 ◽  
Vol 105 (14) ◽  
Author(s):  
M. Angeles Perez-Garcia ◽  
Joseph Silk ◽  
Jirina R. Stone
Keyword(s):  
Dark Matter ◽  
Neutron Stars ◽  
Quark Matter ◽  
Strange Quark ◽  
Strange Quark Matter
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