Deutsch
 
Hilfe Datenschutzhinweis Impressum
  DetailsucheBrowse

Datensatz

DATENSATZ AKTIONENEXPORT
  Turbulent magnetic-field amplification in the first 10 milliseconds after a binary neutron star merger: comparing high-resolution and large eddy simulations

Aguilera-Miret, R., Viganò, D., Carrasco, F. L., Miñano, B., & Palenzuela, C. (2020). Turbulent magnetic-field amplification in the first 10 milliseconds after a binary neutron star merger: comparing high-resolution and large eddy simulations. Physical Review D, 102: 103006. doi:10.1103/PhysRevD.102.103006.

Item is

Basisdaten

einblenden: ausblenden:
Genre: Zeitschriftenartikel

Dateien

einblenden: Dateien
ausblenden: Dateien
:
2009.06669.pdf (Preprint), 10MB
Name:
2009.06669.pdf
Beschreibung:
File downloaded from arXiv at 2020-12-01 13:54
OA-Status:
Sichtbarkeit:
Öffentlich
MIME-Typ / Prüfsumme:
application/pdf / [MD5]
Technische Metadaten:
Copyright Datum:
-
Copyright Info:
-
:
PhysRevD.102.103006.pdf (Verlagsversion), 13MB
 
Datei-Permalink:
-
Name:
PhysRevD.102.103006.pdf
Beschreibung:
-
OA-Status:
Sichtbarkeit:
Eingeschränkt (Max Planck Institute for Gravitational Physics (Albert Einstein Institute), MPGR; )
MIME-Typ / Prüfsumme:
application/pdf
Technische Metadaten:
Copyright Datum:
-
Copyright Info:
-
Lizenz:
-

Externe Referenzen

einblenden:

Urheber

einblenden:
ausblenden:
 Urheber:
Aguilera-Miret, Ricard, Autor
Viganò, Daniele, Autor
Carrasco, Federico Léon1, Autor           
Miñano, Borja, Autor
Palenzuela, Carlos, Autor
Affiliations:
1Computational Relativistic Astrophysics, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, ou_2541714              

Inhalt

einblenden:
ausblenden:
Schlagwörter: General Relativity and Quantum Cosmology, gr-qc, Astrophysics, High Energy Astrophysical Phenomena, astro-ph.HE
 Zusammenfassung: The detection of binary neutron star mergers represents one of the most
important and complex astrophysical discoveries of the recent years. One of the
unclear aspects of the problem is the turbulent magnetic field amplification,
initially triggered by the Kelvin-Helmholtz instability at much smaller scales
than any reachable numerical resolution nowadays. Here we present numerical
simulations of the first ten milliseconds of a binary neutron star merger.
First, we confirm in detail how the simulated amplification depends on the
numerical resolution and is distributed on a broad range of scales, as expected
from turbulent MHD theory. We find that an initial large-scale magnetic field
of $10^{11}\,$G inside each star is amplified in the remnant to
root-mean-square values above $10^{16}\,$G within the first $5$ milliseconds
for our highest-resolution run. Then, we run large eddy simulations, exploring
the performance of the subgrid-scale gradient model, already tested
successfully in previous turbulent box simulations. We show that the addition
of this model is especially important in the induction equation, since it leads
to an amplification of the magnetic field comparable to a higher-resolution
run, but with a greatly reduced computational cost. In the first 10
milliseconds, there is no clear hint for an ordered, large-scale magnetic
field, which should indeed occur in longer timescales through magnetic winding
and the magneto-rotational instability.

Details

einblenden:
ausblenden:
Sprache(n):
 Datum: 2020-09-142020
 Publikationsstatus: Erschienen
 Seiten: 14 pages, 7 figures
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: -
 Identifikatoren: arXiv: 2009.06669
DOI: 10.1103/PhysRevD.102.103006
 Art des Abschluß: -

Veranstaltung

einblenden:

Entscheidung

einblenden:

Projektinformation

einblenden:

Quelle 1

einblenden:
ausblenden:
Titel: Physical Review D
  Andere : Phys. Rev. D.
Genre der Quelle: Zeitschrift
 Urheber:
Affiliations:
Ort, Verlag, Ausgabe: Lancaster, Pa. : American Physical Society
Seiten: - Band / Heft: 102 Artikelnummer: 103006 Start- / Endseite: - Identifikator: ISSN: 0556-2821
CoNE: https://pure.mpg.de/cone/journals/resource/111088197762258