Dear LABNAUT readers,
Today we learrn about a global ecology study site on the Mahoran archipelago and the first discovery of a compact star in the “mass gap”.
The CNRS and Mayotte’s Centre Universitaire de Formation et de Recherche (CUFR) have just approved the creation of a global ecology study site on the Mahoran archipelago. Thanks to this site, scientists will now have a global vision of Mayotte’s unique socio-ecosystem and will be able to assess its richness, functioning and resilience in the face of environmental threats.
Meanwhile, the Virgo and LIGO collaborations have discovered a compact star weighing about 2.6 times the mass of the Sun. Since a compact star with a mass between 2.5 and 5 solar masses been never been observed before, this range is known as the « mass gap » (literally: a gap in mass distribution). In this interval, the stars are too heavy to be neutron stars and too light to be black holes formed during supernovae explosions.
« We are quite sure that the universe is telling us, for the umpteenth time, that our ideas on how compact objects form, evolve and merge are still very fuzzy, » says Mario Spera, a member of the Virgo group at the University of Padua.
Journal reference: GW190814: Gravitational Waves from the Coalescence of a 23 Solar Mass Black Hole with a 2.6 Solar Mass Compact Object – The Astrophysical Journal Letters. R. Abbott, T. D. Abbott, S. Abraham, F. Acernese, K. Ackley, C. Adams, R. X. Adhikari, V. B. Adya, C. Affeldt, M. Agathos et al.