Numerical-relativity simulation for tidal disruption of white dwarfs by a supermassive black hole

Abstract

We study tidal disruption of white dwarfs in elliptic orbits with the eccenticity of $\sim 1/3$--$2/3$ by a non-spinning supermassive black hole of mass $M_{\mathrm{BH}}=10^5{M}_{\odot }$ in fully general relativistic simulations targeting the extreme mass-ratio inspiral leading eventually to tidal disruption. Numerical-relativity simulations are performed by employing a suitable formulation in which the weak self-gravity of white dwarfs is accurately solved. We reconfirm that tidal disruption occurs for white dwarfs of the typical mass of $\sim 0.6M_{\odot }$ and radius $\approx 1.2\times 10^4$\,km near the marginally bound orbit around a non-spinning black hole with $M_{\rm BH}\alt 4\times 10^5M_\odot$.

Accepted for publication in PRD

References in corpus (14)

• Simulating coalescing compact binaries by a new code SACRA
• Radio Properties of Tidal Disruption Events
• Optical-Ultraviolet Tidal Disruption Events
• Waveless Approximation Theories of Gravity
• Sub-radian-accuracy gravitational waveforms of coalescing binary neutron stars in numerical relativity
• Interacting Stellar EMRIs as Sources of Quasi-Periodic Eruptions in Galactic Nuclei
• Illuminating Massive Black Holes With White Dwarfs: Orbital Dynamics and High Energy Transients from Tidal Interactions
• Tidal disruptions by rotating black holes: effects of spin and impact parameter
• Atypical Thermonuclear Supernovae from Tidally Crushed White Dwarfs
• Quasi--Periodic Eruptions from Galaxy Nuclei
• Analytical Representation of a Black Hole Puncture Solution
• X-ray properties of TDEs
• Trumpet-puncture initial data for black holes
• Gravitational waves from the collision of tidally disrupted stars with massive black holes

Cited by in corpus (1)

• Boson star head-on collisions with constraint-violating and constraint-satisfying initial data