 Degenerate stars have contracted into a compact mass , resulting in a rapid rate of rotation . However they have relatively low rates of rotation compared to what would be expected by conservation of angular momentum — the tendency of a rotating body to compensate for a contraction in size by increasing its rate of spin . A large portion of the star 's angular momentum is dissipated as a result of mass loss through the stellar wind . In spite of this , the rate of rotation for a pulsar can be very rapid . The pulsar at the heart of the Crab nebula , for example , rotates 30 times per second . The rotation rate of the pulsar will gradually slow due to the emission of radiation . 
 Degenerate stars <a href='been_done' title='1'><mark>have</mark></a> contracted into a compact mass , resulting in a rapid rate of rotation . However they <a href='got' title='2'><mark>have</mark></a> relatively low rates of rotation compared to what would be expected by conservation of angular momentum — the tendency of a rotating body to compensate for a contraction in size by increasing its rate of spin . A large portion of the star <a href='null_genetive' title='3'><mark>'s</mark></a>angular momentum is dissipated as a result of mass loss through the stellar wind . In spite of this , the rate of rotation for a pulsar can be very rapid . The pulsar at the heart of the Crab nebula , for example , <a href='uninflect' title='4'><mark>rotates</mark></a> 30 times per second . The rotation rate of the pulsar will gradually slow due to the emission of radiation . 
Degenerate stars done contracted into a compact mass , resulting in a rapid rate of rotation . However they got relatively low rates of rotation compared to what would be expected by conservation of angular momentum — the tendency of a rotating body to compensate fa a contraction in size by increasing its rate of spin . A bigass portion of the star  angular momentum is dissipated as a result of mass loss thru da stellar wind . In spite of this , tdarate of rotation ffira pulsar can b very rapid . The pulsar at thdaeart of thedaab nebula , ffaexample , rotate 30 times per second . The rotation rate of the pulsar will gradually slow due to the emission of radiation .