a type of fast-spinning neutron star in a binary system with an ordinary star
A pulsar with a rotation period of 1 to 10 milliseconds, or equivalently a spin rate between 100 and 1,000 revolutions per second. The fastest known millisecond pulsar (PSR 1937 +21) has a period of 1.6 milliseconds, meaning it is rotating 640 times per second.
A pulsar with a period of one thousandth of a second.
a pulsar with a period of milliseconds; such a pulsar spins several tens to hundreds of times per second
A millisecond pulsar (MSP), often referred to as "recycled pulsar", is a pulsar with a rotational period in the range of about 1-10 milliseconds. It may be visible in the microwave or X-ray portions of the electromagnetic spectrum.