Doppelt so viele Signale im neuen Gravitationswellen-Katalog – Forschende des @mpi_grav und der @unihannover leisten wichtige Beiträge zur Entdeckung und Analyse neuer Gravitationswellen-Kandidaten im Rahmen der LIGO-Virgo-KAGRA-Kollaboration.

ℹ️ https://www.aei.mpg.de/1276843/doubling-the-gravitational-wave-transient-catalogue

Die Kollaboration von @LIGO, Virgo und KAGRA hat heute neue Ergebnisse der Analyse des ersten Teils des vierten Beobachtungslaufs (O4a) veröffentlicht. Die Wissenschaftler*innen entdeckten 128 neue Gravitationswellen-Signale. Alle stammten von verschmelzenden Doppelsystemen Schwarzer Löcher oder von Schwarzen Löchern und Neutronensternen. Zwei der Signale konnten mit beispielloser Klarheit beobachtet werden.

Film: I. Markin (@unipotsdam), T. Dietrich (@unipotsdam und @mpi_grav), H. Pfeiffer (@mpi_grav).

#GWTC4 #Gravitationswellen #Astrophysik #Wissenschaft #SchwarzeLöcher #Neutronensterne

Auf dem Preprint-Server arXiv gibt es heute fünf Veröffentlichungen mit allen Details.

1️⃣ GWTC-4.0: An Introduction to Version 4.0 of the Gravitational-Wave Transient Catalog (https://arxiv.org/abs/2508.18080)

2️⃣ GWTC-4.0: Methods for Identifying and Characterizing Gravitational-wave Transients (https://arxiv.org/abs/2508.18081)

3️⃣ GWTC-4.0: Updating the Gravitational-Wave Transient Catalog with Observations from the First Part of the Fourth LIGO-Virgo-KAGRA Observing Run (https://arxiv.org/abs/2508.18082)

4️⃣ GWTC-4.0: Population Properties of Merging Compact Binaries (https://arxiv.org/abs/2508.18083)

5️⃣ Open Data from LIGO, Virgo, and KAGRA through the First Part of the Fourth Observing Run (https://arxiv.org/abs/2508.18079)

#GWTC4 #Gravitationswellen #Astrophysik #Wissenschaft #SchwarzeLöcher #Neutronensterne

GWTC-4.0: An Introduction to Version 4.0 of the Gravitational-Wave Transient Catalog

The Gravitational-Wave Transient Catalog (GWTC) is a collection of short-duration (transient) gravitational wave signals identified by the LIGO-Virgo-KAGRA Collaboration in gravitational-wave data produced by the eponymous detectors. The catalog provides information about the identified candidates, such as the arrival time and amplitude of the signal and properties of the signal's source as inferred from the observational data. GWTC is the data release of this dataset and version 4.0 extends the catalog to include observations made during the first part of the fourth LIGO-Virgo-KAGRA observing run up until 2024 January 31. This paper marks an introduction to a collection of articles related to this version of the catalog, GWTC-4.0. The collection of articles accompanying the catalog provides documentation of the methods used to analyze the data, summaries of the catalog of events, observational measurements drawn from the population, and detailed discussions of selected candidates

arXiv.org