Gravitational Waves from Strange Star Core-Crust Oscillation
arXiv:2207.12053 · doi:10.3390/universe8090442
Abstract
According to the strange quark matter hypothesis, pulsars may actually be strange stars composed of self-bound strange quark matter. The normal matter crust of a strange star, unlike that of a normal neutron star, is supported by a strong electric field. A gap is then presented between the crust and the strange quark core. Therefore, peculiar core-crust oscillation may occur in a strange star, which can produce distinctive gravitational waves. In this paper, the waveforms of such gravitational waves are derived using a rigid model. We find that the gravitational waves are extremely weak and undetectable, even for the next-generation detectors. Therefore, the seismology of a strange star is not affected by the core-crust oscillation. Observers will have to search for other effects to diagnose the existence of the crust.
arXiv comment9 pages, 1 figure, published in the journal Universe as a contribution to the special issue "Advances in Astrophysics and Cosmology - in Memory of Prof. Tan Lu"
References in corpus (29)
- GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral
- Quasi-Normal Modes of Stars and Black Holes
- Gravitational-wave sensitivity curves
- Tidal Love Numbers of Neutron and Self-Bound Quark Stars
- Challenges and Opportunities of Gravitational Wave Searches at MHz to GHz Frequencies
- Resonant Shattering of Neutron Star Crusts
- The inverse problem for pulsating neutron stars: A ``fingerprint analysis'' for the supranuclear equation of state
- Strange stars as persistent sources of gravitational waves
- Fast Radio Bursts: Collisions between Neutron Stars and Asteroids/Comets
- Repeating Fast Radio Bursts from Collapses of the Crust of a Strange Star
- Gravitational wave asteroseismology of neutron and strange stars in gravity
- Probing the equation of state of neutron star matter with gravitational waves from binary inspirals in light of GW170817: a brief review
- Anti-glitch induced by collision of a solid body with the magnetar 1E 2259+586
- Constraining equation of state groups from -mode asteroseismology
- Coalescence of Strange-Quark Planets with Strange Stars: a New Kind of Sources for Gravitational Wave Bursts
- Gravitational waves from in-spirals of compact objects in binary common-envelope evolution
- Gaps below strange star crusts
- Fast Radio Bursts from the collapse of Strange Star Crusts
- Close-in Exoplanets as Candidates of Strange Quark Matter Objects
- Radial oscillations of quark stars from perturbative QCD
- Searching for strange quark matter objects in exoplanets
- Searching for Strange Quark Matter Objects Among White Dwarfs
- Gravitational-wave Emission from a Primordial Black Hole Inspiraling inside a Compact Star: a Novel Probe for Dense Matter Equation of State
- The Gravitational Wave Emission of Double White Dwarf Coalescences
- Tidal Deformability of Strange Quark Planets and Strange Dwarfs
- On the point mass approximation to calculate the gravitational wave signal from white dwarf binaries
- Seismic signatures of strange stars with crust
- Oscillating Strange Quark Matter Objects Excited in Stellar Systems
- Gravitational Radiation during Thorne-Zytkow object formation