Constraining Population III stellar demographics with next-generation gravitational-wave observatories

Posted by dbos MIT

Kavli Affiliate: Salvatore Vitale | First 5 Authors: Cailin Plunkett, Matthew Mould, Salvatore Vitale, , | Summary: Next-generation gravitational-wave observatories will reach farther into the universe than currently possible, revealing black-hole mergers from early stellar binary systems such as Population III stars, whose properties are currently poorly constrained. We develop a method to infer the […]


Continue.. Constraining Population III stellar demographics with next-generation gravitational-wave observatories

Constraining Population III stellar demographics with next-generation gravitational-wave observatories

Posted by dbos MIT

Kavli Affiliate: Salvatore Vitale | First 5 Authors: Cailin Plunkett, Matthew Mould, Salvatore Vitale, , | Summary: Next-generation gravitational-wave observatories will reach farther into the universe than currently possible, revealing black-hole mergers from early stellar binary systems such as Population III stars, whose properties are currently poorly constrained. We develop a method to infer the […]


Continue.. Constraining Population III stellar demographics with next-generation gravitational-wave observatories

The MandelZoom project I: modelling black hole accretion through an $α$-disc in dwarf galaxies with a resolved interstellar medium

Posted by dbos Cambridge

Kavli Affiliate: Debora Sijacki | First 5 Authors: Eun-jin Shin, Debora Sijacki, Matthew C. Smith, Martin A. Bourne, Sophie Koudmani | Summary: While mounting observational evidence suggests that intermediate mass black holes (IMBHs) may be important in shaping the properties of dwarf galaxies both at high redshifts and in the local Universe, our theoretical understanding […]


Continue.. The MandelZoom project I: modelling black hole accretion through an $α$-disc in dwarf galaxies with a resolved interstellar medium

The Discriminant Power of Bubble Wall Velocities: Gravitational Waves and Electroweak Baryogenesis

Posted by dbos Chicago

Kavli Affiliate: Marcela Carena | First 5 Authors: Marcela Carena, Aurora Ireland, Tong Ou, Isaac R. Wang, | Summary: A precise determination of the bubble wall velocity $v_w$ is crucial for making accurate predictions of the baryon asymmetry and gravitational wave (GW) signals in models of electroweak baryogenesis (EWBG). Working in the local thermal equilibrium […]


Continue.. The Discriminant Power of Bubble Wall Velocities: Gravitational Waves and Electroweak Baryogenesis

Long-term stable nonlinear evolutions of ultracompact black-hole mimickers

Posted by dbos Cambridge

Kavli Affiliate: Ulrich Sperhake | First 5 Authors: Gareth Arturo Marks, Seppe J. Staelens, Tamara Evstafyeva, Ulrich Sperhake, | Summary: We study the stability of ultracompact boson stars admitting light rings combining a perturbative analysis with 3+1 numerical-relativity simulations with and without symmetry assumptions. We observe excellent agreement between all perturbative and numerical results which […]


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Operational experience and performance of the Silicon Vertex Detector after the first long shutdown of Belle II

Posted by dbos Tokyo

Kavli Affiliate: T. Higuchi | First 5 Authors: K. Ravindran, K. Adamczyk, H. Aihara, S. Bacher, S. Bahinipati | Summary: In 2024, the Belle II experiment resumed data taking after the Long Shutdown 1, which was required to install a two-layer pixel detector and upgrade accelerator components. We describe the challenges of this shutdown and […]


Continue.. Operational experience and performance of the Silicon Vertex Detector after the first long shutdown of Belle II

Premature supermassive black hole mergers in cosmological simulations of structure formation

Posted by dbos Cambridge

Kavli Affiliate: Debora Sijacki | First 5 Authors: Stephanie Buttigieg, Debora Sijacki, Christopher J. Moore, Martin A. Bourne, | Summary: The co-evolution of massive black holes (BHs) and their host galaxies is well-established within the hierarchical galaxy formation paradigm. Large-scale cosmological simulations are an ideal tool to study the repeated BH mergers, accretion and feedback […]


Continue.. Premature supermassive black hole mergers in cosmological simulations of structure formation