An electron with Lorentz factor in a hot corona inverse-Compton scatters ultraviolet…

PHYSICS · Subjective · Fermi University Physics · Astrophysics & Cosmology · Radiation, radiative transfer and stellar atmospheres · Radiation, radiative transfer and stellar atmospheres

Stars from the Inside, Ch Hot and fast electrons: bremsstrahlung, Compton scattering and synchrotron emission

Problem

An electron with Lorentz factor

\gamma = 500

in a hot corona inverse-Compton scatters ultraviolet seed photons of energy

\varepsilon = 1.0\,\mathrm{eV}

, in the Thomson limit. Using the boost relation

\varepsilon' \approx \tfrac{4}{3}\gamma^2\varepsilon

for isotropic scattering, estimate the typical energy of the scattered photon, in eV and in keV.

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