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Thread: Tabby's star: it's comets

  1. #11
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    Default Re: Tabby's star: it's comets



    Quote Originally Posted by not_Fritz_Argelander View Post
    If this were the case the big dips should be regular. They aren't. If it were a partially complete Dyson sphere the dips should occur regularly too. They don't. Anything involving orbital motions should have a more definite period than what is observed.
    Well, another idea bites the dust..... I'll come up with something else...
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  3. #12
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    Default Re: Tabby's star: it's comets

    UPDATE:
    Avalanche statistics suggest Tabby's star is near a continuous phase transition


    PS> Having to wait 20 seconds between searches on this forum really sucks.

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  5. #13
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    Default Re: Tabby's star: it's comets

    This is the most promising gesture in the direction of an explanation to date. What would make it more than a gesture is a phase transition mechanism. Likely it is some variant of the ionization transition that drives normal periodic variables. A rare peculiarly of dynamics and geometry could disturb the reformation of the ionization layers and break the periodicity.

    It's a brilliant idea. I wish I'd thought of it.

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  7. #14
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    Default Re: Tabby's star: it's comets

    Quote Originally Posted by not_Fritz_Argelander View Post
    This is the most promising gesture in the direction of an explanation to date. What would make it more than a gesture is a phase transition mechanism. Likely it is some variant of the ionization transition that drives normal periodic variables. A rare peculiarly of dynamics and geometry could disturb the reformation of the ionization layers and break the periodicity.

    It's a brilliant idea. I wish I'd thought of it.
    Would such a transition change the color temperature during the dip in output? An object blocking the light would not change the color temperature of the star, but I would think some internal process would.

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    Default Re: Tabby's star: it's comets

    Quote Originally Posted by Murphy625 View Post
    Would such a transition change the color temperature during the dip in output? An object blocking the light would not change the color temperature of the star, but I would think some internal process would.
    If the pulsations were non radial the color temperature need not change.
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  11. #16
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    Default Re: Tabby's star: it's comets

    The color represents displacement not temperature

    https://m.youtube.com/watch?v=mZnGfBtQdDk
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    Default Re: Tabby's star: it's comets

    Now there is another hypothesis:

    "The slow dimming of Tabby’s star and the sudden dips in its light may be caused by an orbiting cloud of debris left over from when it partially gobbled a planet."

    https://www.newscientist.com/article...ting-a-planet/
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    Default Re: Tabby's star: it's comets

    Quote Originally Posted by pikaia View Post
    Now there is another hypothesis:

    "The slow dimming of Tabby’s star and the sudden dips in its light may be caused by an orbiting cloud of debris left over from when it partially gobbled a planet."

    https://www.newscientist.com/article...ting-a-planet/
    It's a nice idea. The only difficulty is the asymmetric nature of the dips. No mention of that in the article. Perhaps it could be explained by highly eccentric orbits for the debris?

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    Default Re: Tabby's star: it's comets

    You need to get the area of the star blocked from view by the orbiting junk to vary....
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