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          Institute: MPI für Gravitationsphysik     Collection: Astrophysical Relativity     Display Documents



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ID: 407098.0, MPI für Gravitationsphysik / Astrophysical Relativity
Asteroseismology of neutron stars and black holes
Authors:Schutz, Bernard F.
Date of Publication (YYYY-MM-DD):2008-10-30
Title of Journal:Journal of Physics: Conference Series
Volume (in Journal):118
Issue / Number:1
Sequence Number:012005
Name of Conference/Meeting:Second HELAS International Conference: Helioseismology, Asteroseismology and MHD Connections
Place of Conference/Meeting:Göttingen, Germany
(Start) Date of Conference/Meeting
 (YYYY-MM-DD):
2007-08-20
End Date of Conference/Meeting 
 (YYYY-MM-DD):
2007-08-24
Review Status:not specified
Audience:Not Specified
Abstract / Description:One of the goals of the large gravitational wave detectors is eventually to observe radiation from oscillations of neutron stars and black holes. These objects have characteristic frequencies of what are called "quasi-normal" mode oscillations, and these frequencies reveal important information about the source. The frequency spectrum of black holes is very different from that of any stars, so if one or more modes are observed then one can conclusively identify the source as a black hole. For neutron stars the spectrum is similar to that of main-sequence stars, but observing a single mode is enough to put strong constraints on the nuclear-matter equation of state, something which is still highly uncertain. Current detectors could make these observations only if the source were exceptionally close. But planned upgrades could make the first relativistic asteroseismological observations; in particular the GEO600 detector will be optimised for these observations by 2010.
External Publication Status:published
Document Type:Conference-Paper
Communicated by:Bernhard F. Schutz
Affiliations:MPI für Gravitationsphysik/Astrophysical Relativity
External Affiliations:School of Physics and Astronomy, Cardiff University, UK
Identifiers:ISSN:1742-6596
DOI:10.1088/1742-6596/118/1/012005
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