Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Compact stellar objects with multiple neck optical geometries
Stockholm University, Faculty of Science, Department of Physics.
Stockholm University, Faculty of Science, Department of Physics.
Stockholm University, Faculty of Science, Department of Physics.
2000 (English)Article in journal (Refereed) Submitted
Abstract [en]

Ultra compact stellar models with a two-zone uniform density equation of state are considered. They are shown to provide neat examples of optical geometries exhibiting double necks, implying that the gravitational wave potential has a double well structure.

Place, publisher, year, edition, pages
2000.
Keyword [en]
general relativity, relativistic stars, gravitational waves
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:su:diva-22958OAI: oai:DiVA.org:su-22958DiVA: diva2:189811
Available from: 2003-09-25 Created: 2003-09-25 Last updated: 2011-06-17Bibliographically approved
In thesis
1. Stellar Models in General Relativity
Open this publication in new window or tab >>Stellar Models in General Relativity
2003 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Neutron stars are some of the most fascinating objects in Nature. Essentially all aspects of physics seems to be represented inside them. Their cores are likely to contain deconfined quarks, hyperons and other exotic phases of matter in which the strong interaction is the dominant force. The inner region of their solid crust is penetrated by superfluid neutrons and their magnetic fields may reach well over 1012 Gauss. Moreover, their extreme mean densities, well above the densities of nuclei, and their rapid rotation rates makes them truly relativistic both in the special as well as in the general sense. This thesis deals with a small subset of these phenomena. In particular the exciting possibility of trapping of gravita-tional waves is examined from a theoretical point of view. It is shown that the standard condition R < 3M is not essential to the trapping mechanism. This point is illustrated using the elegant tool provided by the optical geometry. It is also shown that a realistic equation of state proposed in the literature allows stable neutron star models with closed circular null orbits, something which is closely related to trapped gravitational waves. Furthermore, the general relativistic theory of elasticity is reviewed and applied to stellar models. Both static equilibrium as well as radially oscillating configurations with elasticsources are examined. Finally, Killing tensors are considered and their applicability to modeling of stars is discussed

Place, publisher, year, edition, pages
Stockholm: Fysikum, 2003. 73 p.
Keyword
General relativity, compact objects, neutron stars
National Category
Physical Sciences
Identifiers
urn:nbn:se:su:diva-13 (URN)91-7265-746-4 (ISBN)
Public defence
2003-10-17, FD5, AlbaNova niversitetscentrum, Roslagstullsbacken 21, Stockholm, 10:00
Opponent
Supervisors
Available from: 2003-09-25 Created: 2003-09-25Bibliographically approved

Open Access in DiVA

No full text

Other links

http://arxiv.org/abs/gr-qc/0002045v1

Search in DiVA

By author/editor
Rosquist, Kjell
By organisation
Department of Physics
Physical Sciences

Search outside of DiVA

GoogleGoogle Scholar

urn-nbn

Altmetric score

urn-nbn
Total: 39 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf