Slicing conditions for axisymmetric gravitational collapse of Brill waves

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F18%3A10388216" target="_blank" >RIV/00216208:11320/18:10388216 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1088/1361-6382/aae1bc" target="_blank" >https://doi.org/10.1088/1361-6382/aae1bc</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1361-6382/aae1bc" target="_blank" >10.1088/1361-6382/aae1bc</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Slicing conditions for axisymmetric gravitational collapse of Brill waves

Popis výsledku v původním jazyce

In numerical relativity, spacetimes involving compact strongly gravitating objects are constructed as numerical solutions of Einstein&apos;s equations. Success of such a process strongly depends on the availability of appropriate coordinates, which are typically constructed dynamically. A very robust coordinate choice is a so-called moving puncture gauge, commonly used for numerical simulations of black hole spacetimes. Nevertheless it is known to fail for evolving near-critical Brill wave data. We construct a new &apos;quasi-maximal&apos; slicing condition and demonstrate that it exhibits better behavior for such data. This condition is based on the 1+log slicing with an additional source term derived from maximal slicing. It is relatively simple to implement in existing moving puncture codes and computationally inexpensive. We also illustrate the properties of constructed spacetimes based on gauge-independent quantities in compactified spacetime diagrams. These invariants are also used to show how created black holes settle down to a Schwarzschild black hole.

Název v anglickém jazyce

Slicing conditions for axisymmetric gravitational collapse of Brill waves

Popis výsledku anglicky

In numerical relativity, spacetimes involving compact strongly gravitating objects are constructed as numerical solutions of Einstein&apos;s equations. Success of such a process strongly depends on the availability of appropriate coordinates, which are typically constructed dynamically. A very robust coordinate choice is a so-called moving puncture gauge, commonly used for numerical simulations of black hole spacetimes. Nevertheless it is known to fail for evolving near-critical Brill wave data. We construct a new &apos;quasi-maximal&apos; slicing condition and demonstrate that it exhibits better behavior for such data. This condition is based on the 1+log slicing with an additional source term derived from maximal slicing. It is relatively simple to implement in existing moving puncture codes and computationally inexpensive. We also illustrate the properties of constructed spacetimes based on gauge-independent quantities in compactified spacetime diagrams. These invariants are also used to show how created black holes settle down to a Schwarzschild black hole.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10300 - Physical sciences

Projekt

<a href="/cs/project/GB14-37086G" target="_blank" >GB14-37086G: Centrum Alberta Einsteina pro gravitaci a astrofyziku</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2018

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Classical and Quantum Gravity

ISSN

0264-9381

e-ISSN

—

Svazek periodika

35

Číslo periodika v rámci svazku

21

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

19

Strana od-do

—

Kód UT WoS článku

000446847500003

EID výsledku v databázi Scopus

2-s2.0-85055352002