Abstract
We investigate the stability of "strange dwarfs": white-dwarf-sized stars with a density discontinuity between a small dense core of quark matter and a thick low-density mantle of degenerate electrons. Previous work on strange dwarfs suggested that such a discontinuity could stabilize stars that would have been classified as unstable by the conventional criteria based on extrema in the mass-radius relation. We investigate the stability of such stars by numerically solving the Sturm-Liouville equations for the lowest-energy modes of the star. We find that the conventional criteria are correct, and strange dwarfs are not stable.
| Original language | English |
|---|---|
| Article number | aa8509 |
| Journal | Astrophysical Journal |
| Volume | 847 |
| Issue number | 2 |
| DOIs | |
| State | Published - Oct 1 2017 |
Keywords
- dense matter
- equation of state
- instabilities
- stars: interiors
- stars: neutron
- white dwarfs