Dancing ( Rhythmic Pulsing) Stars

[squiz]

After billions of years of twinkling and shining, some stars in the heavens appear to "dance" as they wind down. Maybe not like Elvis or Michael Jackson, but they definitely have a rhythmic beat, and some may even spin like a top.

"We recently discovered that this star is pulsating a little strangely, and we are looking for signs that it is spinning like a top," says Judi Provencal, assistant professor of physics and astronomy at the University of Delaware and director of the Delaware Asteroseismic Research Center.

WD1524, in the constellation Serpens, was observed during the Whole Earth Telescope's 2009 international campaign. The star was a high-amplitude pulsator until right before the observing run started, when it mysteriously became a small-amplitude pulsator.

"How stars pulsate depends on their structure and composition," says Provencal. "Last year, WD1524 completely changed how it was pulsating. Imagine ringing the Liberty Bell and having it sound like a hand bell. That would be hard to do. We don't understand how this happens with our pulsating stars. We now know that this star has changed yet again, so we are trying to understand how that can happen. Our current theoretical models of white dwarfs don't predict this sort of behavior."

Not much to add, it speaks for itself doesn't it. I mean seriously what else can cause this except for what's been outlined many times here before. Fits like a glove.

http://www.sciencedaily.com/releases/20 ... 124843.htm

[Jarvamundo]

Add to this the 'frequency glitch' anomalies.
http://iopscience.iop.org/0004-637X/613 ... 2_1164.pdf
http://aas.org/archives/BAAS/v36n5/aas205/831.htm

To me... swift frequency changes are the death blow to any rotation or accretion only model.

These amplitude variations are intriguing to both models, i would've thought an amplitude variations would be linked to a frequency change in the EU capacitor discharge model... Maybe JL's woodpeckers are playing a role

The universe is having it's say.

[jjohnson]

A glitch in a body rotating at that speed with that mass? Can anyone imagine how much torque it would take to make a measurable effect, using the spinning neutron star model? Thinking that a strike-slip crustal "catch-up" event could do it seems fanciful. (The metre-deep crust is hypothesized, remember; can not have been observed.)

Here's a teeny math to give an estimate of the rotational kinetic energy of a pulsar, and its angular momentum. Then imagine applying the brakes somehow to drop the period down "a little bit":

Sparks would fly, illuminating the local stellar neighborhood like an arc light in a hall o'mirrors!

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I'm a visual person. I don't think i've seen a picture more visually compelling showing support for the electric model such as this one. I know there are lots, but wow! check it out. Just beautiful.

[Xuxalina Rihhia]

I bet the nebula by itself radiates more light than the star within it. It's powered by electricity so the old yarn about ultraviolet light exciting "gas" is just that--yarn.