Pulsars Are Rotating Neutron Stars That Emit Beams of Electromagnetic

Multiple Choice

Pulsars are rotating neutron stars that emit beams of electromagnetic radiation that sweep around the universe like rotating lighthouse beams. The charged particles that emit these beams are believed to be

A) "charmed" mesons and other exotic particles that on Earth exist only in laboratories.
B) iron and other nuclei pulled from the neutron star's crust by its intense magnetic fields.
C) plasma (ionized gas) spiraling onto the neutron star from a normal stellar companion.
D) electrons and protons accelerated by the neutron star's intense magnetic fields.