de.mpg.escidoc.pubman.appbase.FacesBean
Deutsch
 
Hilfe Wegweiser Impressum Kontakt Einloggen
  DetailsucheBrowse

Datensatz

DATENSATZ AKTIONENEXPORT
  Multistate Boson Stars

Bernal, A., Barranco, J., Alic, D., & Palenzuela, C. (2010). Multistate Boson Stars. Physical Review D., 81: 044031. doi:10.1103/PhysRevD.81.044031.

Item is

Basisdaten

einblenden: ausblenden:
Datensatz-Permalink: http://hdl.handle.net/11858/00-001M-0000-0012-B6F3-3 Versions-Permalink: http://hdl.handle.net/11858/00-001M-0000-0012-B6F8-A
Genre: Zeitschriftenartikel

Dateien

einblenden: Dateien
ausblenden: Dateien
:
0908.2435 (Preprint), 2MB
Beschreibung:
File downloaded from arXiv at 2010-05-25 10:25
Sichtbarkeit:
Öffentlich
MIME-Typ / Prüfsumme:
application/pdf / [MD5]
Technische Metadaten:
Copyright Datum:
-
Copyright Info:
-
:
PRD_044031.pdf (beliebiger Volltext), 2MB
Beschreibung:
-
Sichtbarkeit:
Öffentlich
MIME-Typ / Prüfsumme:
application/pdf / [MD5]
Technische Metadaten:
Copyright Datum:
-
Copyright Info:
-
Lizenz:
-

Externe Referenzen

einblenden:

Urheber

einblenden:
ausblenden:
 Urheber:
Bernal, A.1, Autor              
Barranco, Juan1, Autor              
Alic, Daniela1, Autor              
Palenzuela, Carlos1, Autor              
Affiliations:
1Astrophysical Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, escidoc:24013              

Inhalt

einblenden:
ausblenden:
Schlagwörter: General Relativity and Quantum Cosmology, gr-qc, Astrophysics, Galaxy Astrophysics, astro-ph.GA
 Zusammenfassung: Motivated by the increasing interest in models which consider scalar fields as viable dark matter candidates, we have constructed a generalization of relativistic Boson Stars (BS) composed of two coexisting states of the scalar field, the ground state and the first excited state. We have studied the dynamical evolution of these Multi-state Boson Stars (MSBS) under radial perturbations, using numerical techniques. We show that stable MSBS can be constructed, when the number of particles in the first excited state, N2, is smaller than the number of particles in the ground state, N1. On the other hand, when N2 > N1, the configurations are initially unstable. However, they evolve and settle down into stable configurations. In the stabilization process, the initially ground state is excited and ends in a first excited state, whereas the initially first excited state ends in a ground state. During this process, both states emit scalar field radiation, decreasing their number of particles. This behavior shows that even though BS in the first excited state are intrinsically unstable under finite perturbations, the configuration resulting from the combination of this state with the ground state produces stable objects. Finally we show in a qualitative way, that stable MSBS could be realistic models of dark matter galactic halos, as they produce rotation curves that are flatter at large radii than the rotation curves produced by BS with only one state.

Details

einblenden:
ausblenden:
Sprache(n):
 Datum: 2009-08-172010-02-082010
 Publikationsstatus: Im Druck publiziert
 Seiten: 14 pages. Extended discussion and new figures added. Conclusions unchanged. Accepted for publication in Physical Review D
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: -
 Identifikatoren: arXiv: 0908.2435
DOI: 10.1103/PhysRevD.81.044031
URI: http://arxiv.org/abs/0908.2435
 Art des Abschluß: -

Veranstaltung

einblenden:

Entscheidung

einblenden:

Projektinformation

einblenden:

Quelle 1

einblenden:
ausblenden:
Titel: Physical Review D.
  Alternativer Titel : Phys. Rev. D.
Genre der Quelle: Zeitschrift
 Urheber:
Affiliations:
Ort, Verlag, Ausgabe: Lancaster, Pa. : Published for the American Physical Society by the American Institute of Physics
Seiten: - Band / Heft: 81 Artikelnummer: 044031 Start- / Endseite: - Identifikator: Anderer: 111088197762258
Anderer: 0556-2821