Phase conversion dissipation in multicomponent compact stars

ALFORD M. G., HAN S., Schwenzer K. O.

PHYSICAL REVIEW C, vol.91, no.5, 2015 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 91 Issue: 5
  • Publication Date: 2015
  • Doi Number: 10.1103/physrevc.91.055804
  • Journal Name: PHYSICAL REVIEW C
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Istanbul University Affiliated: No


We propose a mechanism for the damping of density oscillations in multicomponent compact stars. The mechanism is the periodic conversion between different phases, i.e., the movement of the interface between them, induced by pressure oscillations in the star. The damping grows nonlinearly with the amplitude of the oscillation. We study in detail the case of r-modes in a hybrid star with a sharp interface, and we find that this mechanism is powerful enough to saturate the r-mode at very low saturation amplitude, of order 10(-10), and is therefore likely to be the dominant r-mode saturation mechanism in hybrid stars with a sharp interface.