Relativistic Plasma
A high-energy density plasma where thermal electron energies approach or exceed rest mass energy (511 keV), requiring relativistic plasma dynamics.
Governing formula
k_B T_e ≳ m_e c² ≈ 511 keV, γ_e ≫ 1
SI unit
keV or MeV (Thermal Energy)
In depth
Relativistic thermal motion increases electron effective mass (m_e → γ m_e), altering plasma wave dispersion relations, synchrotron radiation emission, and electron-positron pair creation rates.
Examples in the real world
Relativistic astrophysical plasma jets emitted by supermassive black hole accretion disks and pulsar magnetospheres.