announced ”, comments Mario Martínez, coordinator of the group of Virgo at the IFAE. “This event and those to be discovered in the near future open a new window in gravitational wave astronomy and a possible understanding of basic aspects in fundamental physics and cosmology.” “The GW190425 signal is frankly interesting because unraveling its origin is a theoretical challenge. It is very likely that it is due to the merger of two neutron stars, which makes its progenitor special because it would have a total mass significantly higher than that of all systems of this type observed in our galaxy ”, points out José Antonio Font, coordinator of the Virgo group at the University of Valencia. “However, since it cannot be ruled out that the signal comes from a

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merger of little massive black holes, its USA Phone Number List formation could support the existence of black holes in the apparent mass gap between neutron stars and black holes or even other alternatives. exotic, like coming from a fusion of primordial black holes. Undoubtedly, Alicia Sintes, coordinator of the LIGO group at the University of the Balearic Islands, highlights that “nature never ceases to amaze us and the LIGO-Virgo observatories work together to unveil the mysteries of the Universe. On this day as important as the Three Kings Day, we have the pleasant news of announcing a new detection and thus marking the beginning of a very special new year for us. The measurement of the source parameters, and in particular the remarkable total mass of the

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system, are based on mathematical models of the gravitational wave signal that have been constructed with the participation of the UIB group, which also had a PhD student , Pep Covas Vidal, present at the LIGO-Hanford Observatory during the observation of this event. ” Although the first neutron star merger detected by LIGO-Virgo (GW170817) was a surprise due to its proximity to the Solar System and its bright emission in visible light, the second detection, GW190425, is more mysterious because of its high mass. total, which does not agree with the binary systems of neutron stars detected by radio-telescopes in our Galaxy ”, points out Thomas Dent, coordinator of the LIGO IGFAE-GW group in Santiago de Compostela. “Our team is

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