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Chapter 21: Problem 9

Do all supernova remnants contain pulsars? Are all pulsars found within supernova remnants? For each question, explain why or why not.

Short Answer

Expert verified
No, not all supernova remnants contain pulsars due to various reasons like formation of black hole, pulsar not observed or pulsar knocked out of the remnant by explosion. Also, not all pulsars are found within the remnants as they can survive longer than their supernova shells.

Step by step solution

01

Understanding a Supernova Remnant

A supernova remnant is the structure resulting from the explosion of a star in a supernova. It contains the outer layers of the star, which are ejected by explosion, and the stellar core, most of which has collapsed into a neutron star or black hole.
02

Understanding a Pulsar

A pulsar is a highly magnetized rotating neutron star that emits beams of electromagnetic radiation. This radiation is observable only when the beam of emission is pointing towards Earth, and is responsible for the pulsed appearance of emission.
03

Relation between Supernova Remnants and Pulsars

Not all supernova remnants contain pulsars for several reasons. First, if the stellar core has collapsed into a black hole, then no pulsar will be formed. Second, the pulsar may have been knocked out of the supernova remnant by the asymmetric explosion. Third, the pulsar may simply be too faint to be observed. Conversely, not all pulsars are found within supernova remnants. This is because the supernova remnants may disperse over time due to wind and radiation pressure, while the pulsar remains.

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