Explore the fifth lecture in a comprehensive series on neutron stars and black holes, focusing on radiation from relativistic particles. Delve into Maxwell's equations, dipole approximation, and specific intensity. Examine energy flux, Larmor's formula, and angular distribution of radiation. Investigate polarization, quadrupole and magnetic dipole radiation, and gravitational radiation. Learn about radiation from relativistic particles, synchrotron radiation, and its spectrum. Discover the physics behind pulsars, supernova remnants, and radio galaxies. Gain insights into synchrotron lifetime, self-absorption, and Landau levels in magnetic fields. Conclude with a brief introduction to the next lecture on pulsars and participate in a Q&A session.