Gravitational wave bursts induced by r-mode spin-down of hybrid stars

Details Gravitational wave bursts induced by r-mode spin-down of hybrid stars Gravitational wave bursts induced by r-mode spin-down of hybrid stars

2004-05-29

arxiv.org/abs/gr-qc/0405145v3

Astron.Astrophys.445:1053-1060,2006

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

9 pages, 8 figures, revised version, to be published in Astronomy & Astrophysics

Scientific paper

10.1051/0004-6361:20053276

We show that sudden variations in the composition and structure of an hybrid star can be triggered by its rapid spin-down, induced by r-mode instabilities. The discontinuity of this process is due to the surface tension between hadronic and quark matter and in particular to the overpressure needed to nucleate new structures of quark matter in the mixed phase. The consequent mini-collapses in the star can produce highly energetic gravitational wave bursts. The possible connection between the predictions of this model and the burst signal found by EXPLORER and NAUTILUS detectors during the year 2001 is also investigated.

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