Relativistic burning on neutron stars

Britgrav 16

Alice Harpole

Supervisors: Ian Hawke & Nils Andersson

GR Low Mach number equations

  • Continuity
  • ∂tD+∂i(DUi)=-DΓ μνμUν
  • Energy
  • ∂t(Dh)+∂i(UiDh)=u0Dp0Dt-DhΓ μνμUν
  • Momentum
  • ∂tUj+Ui∂iUj=-UjDlnu0Dt+ΓρνjUνUρ-1Dhu0∂jp0+ξ∂jπξ
  • Velocity constraint
  • ∂iζUi=ζS-1Γ1p0∂p0∂t
  • Integrating factor
  • ζ(r,t)=ζ(0,t)exp∫0rdr' 1Γ1p0∂p0∂r'