The Strange Star Surface: A Crust with Nuggets

Abstract

We reexamine the surface composition of strange stars. Strange quark stars are hypothetical compact stars which could exist if strange quark matter was absolutely stable. It is widely accepted that they are characterized by an enormous density gradient ($10^{26}$ g/cm${}^4$) and large electric fields at surface. By investigating the possibility of realizing a heterogeneous crust, comprised of nuggets of strange quark matter embedded in an uniform electron background, we find that the strange star surface has a much reduced density gradient and negligible electric field. We comment on how our findings will impact various proposed observable signatures for strange stars.

4 pages, 2 figures

References in corpus (13)

• Color-Flavor Locking and Chiral Symmetry Breaking in High Density QCD
• Strange Quark Matter and Compact Stars
• Enforced Electrical Neutrality of the Color-Flavor Locked Phase
• Electric fields at the quark surface of strange stars in the color-flavor locked phase
• Thermal Relaxation in Young Neutron Stars
• Physics and Astrophysics of Strange Quark Matter
• Color-Neutral Superconducting Quark Matter
• Charge Screening at First Order Phase Transitions and Hadron - Quark Mixed Phase
• Shell model versus liquid drop model for strangelets
• Thermal Evolution and Light Curves of Young Bare Strange Stars
• First Order Phase Transitions in Neutron star Matter: Droplets and Coherent Neutrino Scattering
• First Order Kaon Condensation in Neutron Stars: Finite Size Effects in the Mixed Phase
• Bremsstrahlung photons from the bare surface of a strange quark star

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