| Table 1: O-type stars, magnitude 5 and greater | Any of a series of intermittent occurrences characterized by a brief sudden change in a quantity |
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| Class O : Class O stars are very hot and extremely luminous, being bluest in color; in fact, most of their output is in the range | Although only a small fraction of stars in the Galaxy are of very high mass — more than a few solar masses — such stars spend most of their short lives as H-burning O-type stars |
They burn their hydrogen fuel into helium after only a few millions of years, much more quickly than lower mass stars.
| These charged particles accelerate out along the magnetic poles of the neutron star and emit synchrotron radiation in pulses | pulse - produce or modulate as electromagnetic waves in the form of short bursts or pulses or cause an apparatus to produce pulses; "pulse waves"; "a transmitter pulsed by an electronic tube" 2 |
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| Eventually, the core of the star will run out of fusible material | So a pulsar is a rotating neutron star, it's just we can observe the beam from Earth |
The gas is accelerated by the spinning around magnetic field lines of the neutron star, and the charged particles emit synchrotron radiation as they are accelerated to nearly the speed of light.