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View Full Version : Pulsars and 'comet like' tails from some



nokton
2006-Feb-11, 07:27 PM
Would ask help here, from someone with more Math ability.
A stationary Pulsar emits a beam of light that to an independant
observer appears as a spiral. If the Pulsar is travelling at half light speed,
would the perceived spiral be elongated, so producing a 'comet like' tail?
To a visual observer?
Nokton.

hhEb09'1
2006-Mar-12, 07:15 AM
Would ask help here, from someone with more Math ability.
A stationary Pulsar emits a beam of light that to an independant
observer appears as a spiral. If the Pulsar is travelling at half light speed,
would the perceived spiral be elongated, so producing a 'comet like' tail?
To a visual observer?
Nokton.Elongated in which direction?

Let's put it in a reference frame, just to keep things straight. What are the dimensions, directions, and velocities?

antoniseb
2006-Mar-12, 12:50 PM
I'm guessing from the title, you are asking whether the comet-like tails behind some of the isolated pulsars we see can be a relativistic effect spreading out the waves from the Pulsar behind them.

We know that these pulsars with tails are not moving at nearly a speed required to cause such an effect. The tail is most likely a result of this energetic and highly magnetic object plowing through a cloud of gas and dust. It would be better to compare what we are seeing to the heliopause than to a comet's tail.