An August full of gravitational surprises

Filippo Martelli


The gravitational wave interferometric detector Advanced Virgo began its data collecting on August 1, 2017. The following 25 days saw the dawn of multimessenger astronomy. First, a two black hole merger was detected, with the first reconstruction of the source position in the sky. A few days later, a binary neutron star system merger was discovered and for the first time observed simultaneously even through electromagnetic emission.

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