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"Dark Hearts of the Cosmos" --Dazzling New Mergers of Black Holes and Neutron Stars

Schwarzes Loch frisst Neutronenstern - Erste Gravitationswellen von der Kollision eines Neutronensterns mit einem Schwarzen Loch

30. Juni 2021 Bei der Kollision von einem Neutronensterns mit einem Schwarzen Loch werden Gravitationswellen frei – diese haben Astronomen jetzt erstmals eindeutig nachgewiesen. © Carl Knox, OzGrav/ Swinburne University Kosmischer Pac-Man: Astronomen haben die ersten eindeutigen Gravitationswellen-Signale von der Kollision eines Neutronensterns mit einem Schwarzen Loch eingefangen. Die Observatorien LIGO und Virgo detektierten im Januar 2020 gleich zwei dieser Ereignisse. Das Schwarze Loch verschluckte den kleineren Neutronenstern dabei wahrscheinlich im Ganzen und ohne begleitenden Strahlungsausbruch. Der Nachweis solcher gemischten Kollisionen eröffnet die Chance, mehr über Entstehung, Entwicklung und Ende dieser ungleichen Paare zu erfahren. Seit dem ersten Nachweis von Gravitationswellen im Jahr 2016 haben Astronomen mehr als 50 kosmische Kollisionen mit den Detektoren LIGO und Virgo registriert. Meist verschmolzen dabei zwei stellare Schwarze Löcher, in einigen wenigen

Astrophysicists Detect Black Holes and Neutron Stars Merging, This Time for Certain

Astrophysicists Detect Black Holes and Neutron Stars Merging, This Time for Certain The massive collisions occurred a billion years ago, sending out ripples in spacetime that eventually reached Earth. Illustration: Carl Knox, OzGrav/Swinburne A large collaboration of astrophysicists report they have made the first-ever confirmed detections of shockwaves produced by mergers between neutron stars and black holes. The detections, 10 days apart, represent two of these enormous cosmic unions. Advertisement In January 2020, Earth quivered ever so slightly as shockwaves imperceptible to human senses passed through it. Those ripples were gravitational waves, perturbations in spacetime generated by all massive objects but only detectable from extremely huge events, like two black holes colliding. The waves were strong enough to be picked up by the Laser Interferometer Gravitational-Wave Observatory in Louisiana (the Washington branch of the instrument was offline at the time) and the si

For the first time, scientists 'see' black holes swallowing neutron stars

Text Size: A+ New Delhi: In a first, an international team of scientists, including researchers from India, have confirmed the detection of a collision between a black hole and a neutron star, by analysing the gravitational waves created by two such events in January last year. Gravitational waves are ripples in the space-time fabric created by extreme events, such as the collision of two blackholes or two neutron stars. While gravitational waves from several such collisions have been detected since the first discovery in 2015, they have all been a result of collision between similar cosmic bodies. However, now the team has determined that these waves detected last January were a result of a neutron star being swallowed whole by its black hole partner.

LIGO–Virgo–KAGRA finds elusive mergers of black holes with neutron stars