MillisecondPulsaren

MillisecondPulsaren is the term used to denote a class of rapidly rotating neutron stars characterized by millisecond-scale rotation periods. In real astrophysics, such objects are called millisecond pulsars; the name MillisecondPulsaren may be used in educational or fictional contexts to refer to a representative member of this class. They emit highly regular pulses across radio, X-ray, or gamma-ray bands, with spin periods typically between about 1 and 10 milliseconds.

Most millisecond pulsars originate in binary systems. A neutron star accretes matter and angular momentum from a companion, spinning up over time and reducing its magnetic braking. When accretion ends, the star shines as a fast-rotating pulsar with a stable period.

Their precise pulse timing makes them excellent natural clocks. Observations of many millisecond pulsars form pulsar timing arrays used to test general relativity and search for nanohertz gravitational waves. They often have relatively low surface magnetic fields compared with younger pulsars and are typically radio-loud, though some emit X-rays.

Millisecond pulsars are found both in the Galactic field and in globular clusters; many have white dwarf companions. There is no widely recognized individual object named MillisecondPulsaren in major catalogs; the term is used here as a representative example of the class.