• LIGO/Virgo announce detection of a 23/2.6 M_sun black hole coalescence

    From Jonathan Thornburg [remove -animal@21:1/5 to All on Fri Jun 26 09:15:47 2020
    The LIGO/Virgo collaboration has just announced their detection of
    a gravitational-wave signal, GW190814 (observed on 2019 August 14),
    interpreted as the coalescence of a 23 solar-mass black hole and a 2.6 solar-mass compact object (which might be either a low-mass black hole
    or a high-mass neutron star). No electromagnetic counterpart was (yet) detected. The data have an overall signal-to-noise ratio of 25:1, and
    are fully consistent with general relativity, modelling either a binary-black-hole or a black-hole/neutron-star system at a (luminosity) distance of about 240 Mpc.

    The detailed paper is open-access at /Astrophysical Journal Letters/, https://doi.org/10.3847/2041-8213/ab960f

    -- "Jonathan Thornburg [remove -animal to reply]" <jthorn@astro.indiana-zebra.edu>
    Dept of Astronomy & IUCSS, Indiana University, Bloomington, Indiana, USA
    currently on the west coast of Canada
    "There was of course no way of knowing whether you were being watched
    at any given moment. How often, or on what system, the Thought Police
    plugged in on any individual wire was guesswork. It was even conceivable
    that they watched everybody all the time." -- George Orwell, "1984"

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