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pro vyhledávání: '"Thomas W. Baumgarte"'
Autor:
Thomas W. Baumgarte, Stuart L. Shapiro
Aimed at students and researchers entering the field, this pedagogical introduction to numerical relativity will also interest scientists seeking a broad survey of its challenges and achievements. Assuming only a basic knowledge of classical general
Publikováno v:
Physical Review D. 107
We report on numerical simulations of critical phenomena near the threshold of black hole formation in the collapse of axisymmetric gravitational waves in vacuum. We discuss several new features of our numerical treatment, and then compare results ob
Autor:
Thomas W. Baumgarte, David Hilditch
Publikováno v:
Physical Review D. 106
While the 1+log slicing condition has been extremely successful in numerous numerical relativity simulations, it is also known to develop "gauge-shocks" in some examples. Alternative "shock-avoiding" slicing conditions suggested by Alcubierre prevent
Autor:
Thomas W. Baumgarte, Stuart L. Shapiro
Publikováno v:
Numerical Relativity: Starting from Scratch. :195-199
Autor:
Thomas W. Baumgarte, H. P. de Oliveira
We consider several families of functions $f(\alpha)$ that appear in the Bona-Masso slicing condition for the lapse function $\alpha$. Focusing on spherically symmetric and time-independent slices we apply these conditions to the Schwarzschild spacet
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ed21405d7b1f6f7d1bfcedc63d784945
http://arxiv.org/abs/2201.08857
http://arxiv.org/abs/2201.08857
Motivated by recent numerical relativity simulations of charged black holes and their interactions, we explore the properties of common slicing conditions in Reissner-Nordstr\"om spacetimes. Specifically, we consider different choices for the so-call
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::347e67368f29f41aba328b385afcc4ff
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 490:3414-3425
We study effects of heating by dark matter (DM) annihilation on black hole gas accretion. We observe that, for reasonable assumptions about DM densities in spikes around supermassive black holes, as well as DM masses and annihilation cross-sections w
Publikováno v:
Physical Review D. 104
Motivated by studies of critical phenomena in the gravitational collapse of vacuum gravitational waves we compare, at the linear level, two common approaches to constructing gravitational-wave initial data. Specifically, we construct analytical, line
We consider spherically symmetric accretion onto a small, possibly primordial, black hole residing at the center of a neutron star governed by a cold nuclear equation of state (EOS). We generalize the relativistic Bondi solution for such EOSs, approx
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f3caca3ac427c0f9438fcd5e6d8a078f
http://arxiv.org/abs/2110.08285
http://arxiv.org/abs/2110.08285
Publikováno v:
Phys Rev D
We revisit the system consisting of a neutron star that harbors a small, possibly primordial, black hole at its center, focusing on a nonspinning black hole embedded in a nonrotating neutron star. Extending earlier treatments, we provide an analytica
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ae274ddfe4cea657d427a95404e618e8
https://europepmc.org/articles/PMC8507166/
https://europepmc.org/articles/PMC8507166/