The Crab Nebula is a bright, reddish nebula consisting of the debris from a supernova explosion observed
Question:
The Crab Nebula is a bright, reddish nebula consisting of the debris from a supernova explosion observed on earth in \(1054 \mathrm{AD}\). The estimated total power it emits, mostly in X-rays, UV, and visible light, is of order \(10^{31} \mathrm{~W}\). The nebula harbors a pulsar in its center, which emits a pulsed light signal. Pulsars are rotating neutron stars, having a mass comparable to that of the sun \(\left(2.0 \times 10^{30} \mathrm{~kg}\right)\) but a radius of only about \(10 \mathrm{~km}\). The period between successive pulses (the rotational period of the star) is \(P=0.033091\) \(\mathrm{s}\), which slowly increases with time, \(d P / d t=4.42 \times 10^{-13} \mathrm{~s} / \mathrm{s}\). Is it possible that the decreasing rotational energy of the star is the ultimate source of the energy observed in radiation?
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