A Compact Star Rotating at 1122 Hz and the r-Mode Instability

A Compact Star Rotating at 1122 Hz and the r-Mode Instability

We show that r-mode instabilities severely constrain the composition of a compact star rotating with a submillisecond period. In particular, the only viable astrophysical scenario for such an object, present inside the low-mass X-ray binary associated with the X-ray transient XTE J1739-285, is that...

Full description

Saved in:
Bibliographic Details
Published in:The Astrophysical journal Vol. 678; no. 2; pp. L117 - L120
Main Authors: Drago, Alessandro, Pagliara, Giuseppe, Parenti, Irene
Format: Journal Article
Language:English
Published: Chicago, IL IOP Publishing 10-05-2008
University of Chicago Press
Subjects:
Astronomy
Earth, ocean, space
Exact sciences and technology
Rotating star
Neutron stars
equation of state
Equations of state
stars: interiors
Gravitational waves
Instability
Compact stars
Stellar rotation
instabilities
stars: rotation
stars: neutron
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We show that r-mode instabilities severely constrain the composition of a compact star rotating with a submillisecond period. In particular, the only viable astrophysical scenario for such an object, present inside the low-mass X-ray binary associated with the X-ray transient XTE J1739-285, is that it has a strangeness content. Since previous analyses indicate that hyperonic stars or stars containing a kaon condensate are not good candidates, the only remaining possibility is that such an object is either a strange quark star or a hybrid quark-hadron star. We also discuss under which conditions submillisecond pulsars are rare.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:1538-4357
0004-637X
1538-4357
DOI:10.1086/588635