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Fraser
2009-Jan-06, 10:50 PM
NASA's Fermi Gamma-ray Space Telescope has found 12 previously unknown gamma-ray only pulsars, as well as identifying gamma-ray emissions from 18 known or suspected radio pulsars. And what the telescope is finding is changing the way we think of these stellar cinders. The old analogy for pulsars was a lighthouse: gamma-rays were thought [...]

More... (http://www.universetoday.com/2009/01/06/lighthouse-analogy-no-longer-works-for-pulsars/)

Gigabyte
2009-Jan-07, 03:58 PM
Fascinating.

trinitree88
2009-Jan-07, 06:57 PM
NASA's Fermi Gamma-ray Space Telescope has found 12 previously unknown gamma-ray only pulsars, as well as identifying gamma-ray emissions from 18 known or suspected radio pulsars. And what the telescope is finding is changing the way we think of these stellar cinders. The old analogy for pulsars was a lighthouse: gamma-rays were thought [...]

More... (http://www.universetoday.com/2009/01/06/lighthouse-analogy-no-longer-works-for-pulsars/)

Fraser. The animation looks more like what you'd expect if there was a polar emission jet of protons/electrons, and decaying neutrons.


see:http://www.bautforum.com/universe-today-story-comments/42194-neutron-star-tail-like-comet.html

and I'm voting for "aurora pulsaris" for the effect..see:http://www.bautforum.com/questions-answers/37051-what-would-neutron-star-look-like.html



pete

Argos
2009-Jan-07, 07:10 PM
The NASA´s article does not make it clear if the Gamma-ray pulses are as regular as the radio ones [both in time and intensity](*). Are they [I suspect they aren´t - they´re more like aurorae - so the name 'pulsar' should be regarded as a historical relic]?

(*) Unable to open the movie.

publiusr
2009-Jan-16, 10:58 PM
I can't get the movie to work either.

George
2009-Jan-17, 05:43 PM
Here (http://www.youtube.com/watch?v=duh2srW8j3U) is the YouTube version.

Argos
2009-Jan-19, 02:43 PM
Hmm, now I see. The movie shows a frozen cloud of particles orbiting the star. But the real stuff must be more dynamical, meaning that the pulses are not as regular as the radio ones.

Jerry
2009-Jan-19, 09:56 PM
Populated planets using massive shields to deflect beams from a death star?