Absorption of strong electromagnetic waves in magnetized pair plasmas

We discuss synchrotron absorption of a short electromagnetic pulse that propagates in a cold magnetized pair plasma. We show that the pulse can be absorbed when ω_{B}/a_{0}<ω1 is the strength parameter of the pulse, and ω and ω_{B}, respectively, are the frequency of the wave and the cyclotron frequency in the background magnetic field (all quantities are defined in the reference frame where the particles are at rest before being illuminated by the pulse). The condition ω_{B}/a_{0}<ω1. When ω_{B}/a_{0}<ω