 |
|
| A B C D E F G H I J K L M N O P Q R S T U V W X Y Z |
|
|
spin-down
The gradual lengthening of the period of a pulsar as it loses energy with age. Observed spin-down rates range from 10-12 s per second for the youngest pulsars to 10-19 s per second for recycled pulsars; the Crab pulsar is slowing at a rate of 3.5 × 10-13 s per second. Occasionally a glitch occurs in the spin-down in which there is a sudden increase in rotation rate. This is thought to be the equivalent of an earthquake where the crust of the neutron star settles a little bit, decreasing the radius and moment of inertia.
Related category
• STELLAR ASTROPHYSICS
Also on this site:
Encyclopedia of Alternative Energy & Sustainable Living
Encyclopedia of History
Transport Concepts & Designs (partner site)