Results 171 to 180 of about 14,588 (266)

Radial Oscillations of Dark Matter Stars Admixed with Dark Energy

open access: yesUniverse
We imagine spherically symmetric configurations made of both dark matter and dark energy in the halo of spiral galaxies. Adopting a polytropic equation of state for dark matter and the Extended Chaplygin gas equation of state for dark energy, we model ...
Camila Sepúlveda, Grigoris Panotopoulos
doaj   +1 more source

Simulations of Solar and Stellar Dynamos and Their Theoretical Interpretation. [PDF]

open access: yesSpace Sci Rev, 2023
Käpylä PJ   +4 more
europepmc   +1 more source

Radial Oscillations of the HESS J1731-347 Compact Object Imposing the Karmarkar Condition

open access: yesUniverse
We model the light HESS J1731-347 compact object (of known stellar mass and radius) within Einstein’s General Relativity, imposing the Karmarkar condition in gravity for anisotropic stars. The three free parameters of the analytic solution are determined
Grigoris Panotopoulos
doaj   +1 more source

Evidence of structural discontinuities in the inner core of red-giant stars. [PDF]

open access: yesNat Commun, 2022
Vrard M   +5 more
europepmc   +1 more source

The relationship between photometric and spectroscopic oscillation amplitudes from 3D stellar atmosphere simulations. [PDF]

open access: yesMon Not R Astron Soc, 2021
Zhou Y   +7 more
europepmc   +1 more source

Variability in the Massive Open Cluster NGC 1817 from K2: A Rich Population of Asteroseismic Red Clump, Eclipsing Binary, and Main-sequence Pulsating Stars. [PDF]

open access: yesAstron J, 2020
Sandquist EL   +15 more
europepmc   +1 more source

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