The Effect of Dark Matter on Stars at the Galactic Center: The Paradox of Youth Problem
arXiv:2003.12451 · doi:10.1142/S0218271820500522
Abstract
Stars that evolve near the Galactic massive black hole show strange behaviors. The spectroscopic features of these stars show that they must be old. But their luminosities are much higher than the amounts that are predicted by the current stellar evolutionary models, which means that they must be active and young stars. In fact this group of stars shows signatures of old and young stars, simultaneously. This is a paradox known as the "paradox of youth problem" (PYP). Some people tried to solve the PYP without supposing dark matter effects on stars. But, in this work, we implemented Weakly Interacting Massive Particles (WIMPs) annihilation as a new source of energy inside such stars. This implementation is logical for stars that evolve at high dark matter density environments. The new source of energy causes stars to follow different evolutionary paths on the H-R diagram in comparison with classical stellar evolutionary models. Increasing dark matter density in stellar evolutionary simulations causes the deviations from the standard H-R diagrams becomes more pronounced. By investigating the effects of WIMPs density on stellar structures and evolutions, we concluded that by considering dark matter effects on stars at the Galactic center, it is possible to solve the PYP. In addition to dark matter effect, complete solutions to PYP must consider all extreme and unique physical conditions that are present near the Galactic massive black hole.
arXiv comment14 Pages, 6 Figures, 1 Table, Accepted for publication in International Journal of Modern Physics D (IJMPD) journal
References in corpus (30)
- Particle Dark Matter: Evidence, Candidates and Constraints
- Modules for Experiments in Stellar Astrophysics (MESA)
- Modules for Experiments in Stellar Astrophysics (MESA): Giant Planets, Oscillations, Rotation, and Massive Stars
- Modules for Experiments in Stellar Astrophysics (MESA): Binaries, Pulsations, and Explosions
- Modules for Experiments in Stellar Astrophysics (MESA): Convective Boundaries, Element Diffusion, and Massive Star Explosions
- MESA Isochrones and Stellar Tracks (MIST) 0: Methods for the construction of stellar isochrones
- The First Measurement of Spectral Lines in a Short-Period Star Bound to the Galaxy's Central Black Hole: A Paradox of Youth
- First Results from the XENON10 Dark Matter Experiment at the Gran Sasso National Laboratory
- A New Era in the Quest for Dark Matter
- WIMP Annihilation and Cooling of Neutron Stars
- Stellar Processes Near the Massive Black Hole in the Galactic Center
- Compact Stars as Dark Matter Probes
- Can Neutron stars constrain Dark Matter?
- Dark matter heats up in dwarf galaxies
- Limits on spin-dependent WIMP-nucleon cross-sections from the XENON10 experiment
- Time-Dependent Models for Dark Matter at the Galactic Center
- Detecting Dark Matter with Imploding Pulsars in the Galactic Center
- Dark stars at the Galactic centre - the main sequence
- Dark Matter annihilations in Pop III stars
- The Zero Age Main Sequence of WIMP burners
- Helioseismology as a New Constraint on SUSY Dark Matter
- The formation and evolution of young low-mass stars within halos with high concentration of dark matter particles
- First asteroseismic limits on the nature of dark matter
- Main sequence stars with asymmetric dark matter
- Asymmetric Dark Matter May Alter the Evolution of Low-mass Stars and Brown Dwarfs
- The capture of dark matter particles through the evolution of low-mass stars
- Low mass stellar evolution with WIMP capture and annihilation
- Asteroseismic constraints on Asymmetric Dark Matter: Light particles with an effective spin-dependent coupling
- The hot stars in orbit around the M31 central supermassive black hole: are they young or old?
- The Sun and stars: Giving light to dark matter