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Thread: Sharp-eyed Alma spots a gigantic flare on famous red giant star, Mira A

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    Default Sharp-eyed Alma spots a gigantic flare on famous red giant star, Mira A



    Jim

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    Default Re: Sharp-eyed Alma spots a gigantic flare on famous red giant star, Mira A

    Very cool, Jim. Thanks! It is amazing that we can achieve that detail!
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    Default Re: Sharp-eyed Alma spots a gigantic flare on famous red giant star, Mira A

    Quote Originally Posted by bladekeeper View Post
    Very cool, Jim. Thanks! It is amazing that we can achieve that detail!
    Indeed, Bryan. Of course having a supernova waiting to happen that is only 420 light-years away is a little unnerving to me. But I think not_Fritz said we should be safe when it blows, which could happen in the far future.Oh! I looked up Mira B on Wiki and it's now thought to be a main-sequence star of spectral class k, not a white dwarf. However, maybe it is a white dwarf. The article on Wiki does not make it clear. http://en.wikipedia.org/wiki/Mira_B
    Last edited by Solrian; 05-31-2015 at 05:15 PM.
    Jim

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    Default Re: Sharp-eyed Alma spots a gigantic flare on famous red giant star, Mira A

    Hi Jim. Now this is an amazing story using Alma at it's highest resolution. And, the fact that Mira A can shoot out a flare to it's binary companion Mira B, is just fascinating. Thanks for finding and sharing this very interesting link with us Jim, and the best of regards.
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    Default Re: Sharp-eyed Alma spots a gigantic flare on famous red giant star, Mira A

    Quote Originally Posted by Makuser View Post
    Hi Jim. Now this is an amazing story using Alma at it's highest resolution. And, the fact that Mira A can shoot out a flare to it's binary companion Mira B, is just fascinating. Thanks for finding and sharing this very interesting link with us Jim, and the best of regards.
    I agree. Amazing new advances in our tech tend to catch many people by surprise when they see before them the results. I certainly am. PS. Astronomy rocks!
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    Default Re: Sharp-eyed Alma spots a gigantic flare on famous red giant star, Mira A

    Quote Originally Posted by Solrian View Post
    Indeed, Bryan. Of course having a supernova waiting to happen that is only 420 light-years away is a little unnerving to me. But I think not_Fritz said we should be safe when it blows, which could happen in the far future.Oh! I looked up Mira B on Wiki and it's now thought to be a main-sequence star of spectral class k, not a white dwarf. However, maybe it is a white dwarf. The article on Wiki does not make it clear. Mira B - Wikipedia, the free encyclopedia
    I have to disagree a little. The article concludes saying that Mira B is a white dwarf thus:
    However, a 2010 analysis of rapid optical brightness variations has indicated that Mira B is in fact a white dwarf.
    Rapid variations means that the object has to be compact. In this case so compact that a K mainsequence star is ruled out. The article points to this research:

    http://arxiv.org/pdf/1009.2509v1.pdf
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