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Home Forums Society Events Testing Gravity in the Solar System

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This topic contains 19 replies, has 4 voices, and was last updated by  Andy Sawers 4 years, 6 months ago.

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  • #8094

    Brian Blake
    Participant
    Topics: 188
    Replies: 409

    Sorry forgot decimal point.

    #8096

    Andy Sawers
    Moderator
    Topics: 124
    Replies: 602

    Must be my ear trumpet, then – and my memory playing up. I thought he said 35. Still – at least I now know why 6 sigma is actually 4.5 sigma, so it’s all been worthwhile…..

    #8241

    Mike Meynell
    Moderator
    Topics: 119
    Replies: 756

    A report on the lecture is now on this site:

    http://flamsteed.info/2014/09/testing-gravity-in-the-solar-system/

    Many thanks to Andy for writing a superb report of proceedings.

    #8247

    Andy Sawers
    Moderator
    Topics: 124
    Replies: 602

    Thanks, Mike! Excellent links you inserted, by the way! They add a hell of a lot of value to the finished article.

    #8248

    Andy Sawers
    Moderator
    Topics: 124
    Replies: 602

    Mike put a link in my report to the 2012 Flamsteed Dark Matter vs MOND debate. There’s one section in that in particular that’s worth drawing out to help explain why this search for gravity waves matters – pardon the pun.

    “… the gravitational changes required by MOND are so weak that we cannot reproduce them on Earth. They are the kind of gravitational fields that would be generated by a single sheet of A4 paper in empty space. MOND puts the extra gravitational power where it’s needed, in weak field regimes. Dark matter solutions put more power everywhere, in the centres of galaxies as well as in galactic halo, so you have to fine-tune each of the dark matter halos in order to match the rotation curves. This highlights the key difference between dark matter and MOND.”

    • This reply was modified 4 years, 6 months ago by  Andy Sawers. Reason: link and formatting
    • This reply was modified 4 years, 6 months ago by  Andy Sawers.
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