Michael Gabler
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View article: Gravitational bounce from the quantum exclusion principle
Gravitational bounce from the quantum exclusion principle Open
We investigate the fully relativistic spherical collapse model of a uniform distribution of mass 𝑀 with initial comoving radius 𝜒* and spatial curvature 𝑘 ≡1/𝜒2𝑘 ≤1/𝜒2* representing an overdensity or bounded perturbation within a larger ba…
View article: Tracing the ejecta structure of supernova 1987A: Insights and diagnostics from 3D magnetohydrodynamic simulations
Tracing the ejecta structure of supernova 1987A: Insights and diagnostics from 3D magnetohydrodynamic simulations Open
Context. Supernova (SN) 1987A provides a unique window into the aftermath of a massive stellar explosion, offering key insights into the ejecta’s morphology, composition, explosion mechanism, progenitor system, and circumstellar medium (CS…
View article: Gravitational Bounce from the Quantum Exclusion Principle
Gravitational Bounce from the Quantum Exclusion Principle Open
We investigate the fully relativistic spherical collapse model of a uniform distribution of mass $M$ with initial comoving radius $\chi_*$ and spatial curvature $k \equiv 1/\chi_k^2 \le 1/\chi_*^2$ representing an over-density or bounded p…
View article: Gravitational Bounce from the Quantum Exclusion Principle
Gravitational Bounce from the Quantum Exclusion Principle Open
We investigate the fully relativistic spherical collapse model of a uniform distribution of mass $M$ with initial comoving radius $\chi_*$ and spatial curvature $k \equiv 1/\chi_k^2 \le 1/\chi_*^2$ representing an over-density or bounded p…
View article: Gravitational Bounce and Inflation Driven by the Exclusion Principle
Gravitational Bounce and Inflation Driven by the Exclusion Principle Open
We present a novel cosmological framework where cosmic expansion arises from the gravitational collapse and bounce of a uniform, spherically symmetric cloud of mass \( m \) with an initial comoving radius \( \chi_* \). Extending Lemaître's…
View article: Cold collapse and bounce of an FLRW cloud
Cold collapse and bounce of an FLRW cloud Open
We study the collapse of spherical cold clouds beyond black hole formation to investigate the possibility of a bounce in the in-falling matter when a critical density or pressure is reached. As a first step, we analyse the pressureless col…
View article: Cold Collapse and Bounce of a FLRW Cloud
Cold Collapse and Bounce of a FLRW Cloud Open
We study the collapse of spherical cold clouds beyond black hole (BH) formation to investigate the possibility of a bounce in the in-falling matter when a critical density or pressure is reached. As a first step, we analyze the pressureles…
View article: Cold Collapse and Bounce of a FLRW Cloud
Cold Collapse and Bounce of a FLRW Cloud Open
We study the collapse of spherical cold clouds beyond black hole (BH) formation to investigate the possibility of a bounce in the in-falling matter when a critical density or pressure is reached. As a first step, we analyze the pressureles…
View article: Cold Collapse and Bounce of an FLRW Cloud
Cold Collapse and Bounce of an FLRW Cloud Open
We study the collapse of spherical cold clouds beyond black hole formation to investigate the possibility of a bounce in the in-falling matter when a critical density or pressure is reached. As a first step, we analyse the pressureless col…
View article: Magnetorotational supernovae: a nucleosynthetic analysis of sophisticated 3D models
Magnetorotational supernovae: a nucleosynthetic analysis of sophisticated 3D models Open
Magnetorotational supernovae are a rare type of core-collapse supernovae where the magnetic field and rotation play a central role in the dynamics of the explosion. We present the post-processed nucleosynthesis of state-of-the-art neutrino…
View article: Magnetorotational supernovae: A nucleosynthetic analysis of sophisticated 3D models
Magnetorotational supernovae: A nucleosynthetic analysis of sophisticated 3D models Open
Magnetorotational supernovae are a rare type of core-collapse supernovae where the magnetic field and rotation play a central role in the dynamics of the explosion. We present the post-processed nucleosynthesis of state-of-the-art neutrino…
View article: The infancy of core-collapse supernova remnants
The infancy of core-collapse supernova remnants Open
We present 3D hydrodynamic simulations of neutrino-driven supernovae (SNe) with the Prometheus-HotB code, evolving the asymmetrically expanding ejecta from shock breakout until they reach the homologous expansion phase after roughly one ye…
View article: Three-dimensional models of core-collapse supernovae from low-mass progenitors with implications for Crab
Three-dimensional models of core-collapse supernovae from low-mass progenitors with implications for Crab Open
We present 3D full-sphere supernova simulations of non-rotating low-mass (∼9 M⊙) progenitors, covering the entire evolution from core collapse through bounce and shock revival, through shock breakout from the stellar surface, until fallbac…
View article: Properties of gamma-ray decay lines in 3D core-collapse supernova models, with application to SN 1987A and Cas A
Properties of gamma-ray decay lines in 3D core-collapse supernova models, with application to SN 1987A and Cas A Open
Comparison of theoretical line profiles to observations provides important tests for supernova explosion models. We study the shapes of radioactive decay lines predicted by current 3D core-collapse explosion simulations, and compare these …
View article: High Angular Resolution ALMA Images of Dust and Molecules in the SN 1987A Ejecta
High Angular Resolution ALMA Images of Dust and Molecules in the SN 1987A Ejecta Open
We present high angular resolution (∼80 mas) ALMA continuum images of the SN 1987A system, together with CO J = 2 1, J = 6 5, and SiO J = 5 4 to J = 7 6 images, which clearly resolve the ejecta (dust continuum and molecules) and ring (sync…
View article: Encountering offenders in community palliative care settings: Challenges for effective care provision.
Encountering offenders in community palliative care settings: Challenges for effective care provision. Open
Background:
\nThere is very little research into the way that offender management strategies impinge on the practices and decision-making of palliative care personnel in community settings.
\n
\nAims:
\nTo improve understanding of the chal…
View article: Constraining properties of high-density matter in neutron stars with magneto-elastic oscillations
Constraining properties of high-density matter in neutron stars with magneto-elastic oscillations Open
We discuss torsional oscillations of highly magnetised neutron stars\n(magnetars) using two-dimensional, magneto-elastic-hydrodynamical simulations.\nOur model is able to explain both the low- and high-frequency quasi-periodic\noscillation…
View article: Magneto‐elastic oscillations modulating the emission of magnetars
Magneto‐elastic oscillations modulating the emission of magnetars Open
Magneto‐elastic oscillations of neutron stars are believed to explain the observed quasi‐periodic oscillations ( QPOs ) in the decaying tail of the giant flares of highly magnetized neutron stars (magnetars). Strong efforts by theoretical …
View article: Search for quasi-periodic signals in magnetar giant flares
Search for quasi-periodic signals in magnetar giant flares Open
Quasi-periodic oscillations (QPOs) discovered in the decaying tails of giant flares of magnetars are believed to be torsional oscillations of neutron stars. These QPOs have a high potential to constrain properties of high-density matter. I…
View article: Very Deep inside the SN 1987A Core Ejecta: Molecular Structures Seen in 3D
Very Deep inside the SN 1987A Core Ejecta: Molecular Structures Seen in 3D Open
Most massive stars end their lives in core-collapse supernova explosions and enrich the interstellar medium with explosively nucleosynthesized elements. Following core collapse, the explosion is subject to instabilities as the shock propag…
View article: The infancy of supernova remnants: evolving a supernova into its remnant in 3D
The infancy of supernova remnants: evolving a supernova into its remnant in 3D Open
Recently, first neutrino-driven supernova explosions have been obtained in 3D, self-consistent, first-principle simulations, these models are still not always exploding robustly and, in general, the explosions are not sufficiently energeti…
View article: Coherent magneto-elastic oscillations in superfluid magnetars
Coherent magneto-elastic oscillations in superfluid magnetars Open
We study the effect of superfluidity on torsional oscillations of highly magnetised neutron stars (magnetars) with a microphysical equation of state by means of two-dimensional, magneto-hydrodynamical-elastic simulations. The superfluid pr…