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    LIGO-Virgo-KAGRA tagged posts

    LIGO-Virgo-KAGRA detect most massive black hole merger to date

    July 14, 2025, Categories  Astronomy/Space

    Artwork of a neutron star–black hole merger.
    Credit: Carl Knox, OzGrav-Swinburne University

    The LIGO-Virgo-KAGRA (LVK) Collaboration has detected the merger of the most massive black holes ever observed with gravitational waves using the LIGO observatories. The powerful merger produced a final black hole approximately 225 times the mass of our sun. The signal, designated GW231123, was detected during the fourth observing run of the LVK network on November 23, 2023.

    LIGO, the Laser Interferometer Gravitational-wave Observatory, made history in 2015 when it made the first-ever direct detection of gravitational waves, ripples in space-time. In that case, the waves emanated from a black hole merger that resulted in a final black hole 62 times the mass of our sun...

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    Researchers Enable Detection of Remarkable Gravitational-Wave Signal

    April 9, 2024, Categories  Astronomy/Space

    coalescence and merger of a lower mass-gap black hole with a neutron star
    The coalescence and merger of a lower mass-gap black hole (dark grey surface) with a neutron star with colours ranging from dark blue (60 grams per cubic centimetre) to white (600 kilograms per cubic centimetre) and highlight the strong deformations of the low-density material of the neutron star. Credit: I. Markin (Potsdam University), T. Dietrich (Potsdam University and Max Planck Institute for Gravitational Physics), H. Pfeiffer, A. Buonanno (Max Planck Institute for Gravitational Physics).

    Researchers from the University of Portsmouth’s Institute of Cosmology and Gravitation (ICG) have helped to detect a remarkable gravitational-wave signal, which could hold the key to solving a cosmic mystery.

    The discovery is from the latest set of results announced by the LIGO-Virgo-KAGRA co...

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