2017/02/19 by Jessica Asbell, Prashanth Jaikumar
Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Crust #Equation of state #Neutron star #Oscillation (cell signaling) #Polytropic process #Pulsars and Gravitational Waves Research #Quark star #Stars #Strange matter #nucl-th
paper · pdf · doi:10.1088/1742-6596/861/1/012029
8 pages, 6 figures. Contribution to Proceedings of CSQCD V (Compact Stars in the QCD Phase Diagram V, GSSI, L'Aquila, Italy)
arxiv created 2017/02/19 · openalex publication_date 2017/06/01 · arxiv updated 2017/06/28 · openalex created_date 2019/07/30 · openalex updated_date 2026/08/06
We study the non-radial oscillation modes of strange quark stars with a homogeneous core and a crust made of strangelets. Using a 2-component equation-of-state model (core+crust) for strange quark stars that can produce stars as heavy as 2 solar masses, we identify the high-frequency l=2 spheroidal ( f, p ) in Newtonian gravity, using the Cowling approximation. The results are compared to the case of homogeneous compact stars such as polytropic neutron stars, as well as bare strange stars. We find that the strangelet crust only increases very slightly the frequency of the spheroidal modes, and that Newtonian gravity overestimates the mode frequencies of the strange star, as is the case for neutron stars.