Astrophysics, Cosmology & Relativity
4 terms
Einstein Field Equations
Astrophysics, Cosmology & Relativity
Non-linear 4D Tensor Equations
The set of 10 non-linear partial differential equations in general relativity relating spacetime curvature (Ricci tensor R_μν) to stress-energy-momentum T_μν.
R_μν - ½ R g_μν + Λ g_μν = (8 π G / c⁴) T_μν
Equivalence Principle
Astrophysics, Cosmology & Relativity
Fundamental Relativistic Principle
The foundational postulate of general relativity asserting that the physical effects of a uniform gravitational field are locally indistinguishable from uniform mechanical acceleration.
m_inertial = m_gravitational
Event Horizon
Astrophysics, Cosmology & Relativity
km or m (Boundary Radius)
The boundary surrounding a black hole beyond which escape velocity exceeds the speed of light, preventing any matter or signal from escaping.
R_s = 2 G M / c²
Exoplanet
Astrophysics, Cosmology & Relativity
Earth Masses (M_⊕) or Jupiter Masses (M_J)
A planet situated outside the Solar System that orbits a star, stellar remnant, or brown dwarf.
Transit Depth ΔF / F = (R_planet / R_star)²