Astrophysics, Cosmology & Relativity
2 terms
Accretion Disk
Astrophysics, Cosmology & Relativity
Watts or Solar Luminosity
A rotating disk structure formed by infalling diffuse matter orbiting a massive central body like a white dwarf, neutron star, or black hole.
L_acc = η M_dot c² (Efficiency η ~ 0.1 to 0.42)
Astronomical Unit (AU)
Astrophysics, Cosmology & Relativity
Astronomical Units (AU)
An astronomical unit of length defined as exactly 149,597,870,700 meters, representing the mean distance from Earth to the Sun.
1 AU = 149,597,870,700 m ≈ 1.496 × 10¹¹ m