Tsang, David 2011 短暴前兆的一个中子星壳层模型

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Title:		Resonant Shattering of Neutron Star Crusts
Authors:		Tsang, David; Read, Jocelyn S.; Hinderer, Tanja; Piro, Anthony L.; Bondarescu, Ruxandra
Affiliation:		AA(TAPIR, California Institute of Technology, Pasadena, California, USA), AB(Department of Physics and Astronomy, University of Mississippi, Oxford, Mississippi, USA), AC(TAPIR, California Institute of Technology, Pasadena, California, USA; Department of Physics, University of Maryland, College Park, Maryland, USA), AD(TAPIR, California Institute of Technology, Pasadena, California, USA), AE(Department of Physics, Pennsylvania State University, State College, Pennsylvania, USA; Institute for Theoretical Physics, University of Zurich, Switzerland)
Publication:		Physical Review Letters, vol. 108, Issue 1, id. 011102 (PhRvL Homepage)
Publication Date:		01/2012
Origin:		APS
PACS Keywords:		Neutron stars, Gravitational radiation, magnetic fields, and other observations, Binary and multiple stars, gamma-ray sources; gamma-ray bursts
DOI:		10.1103/PhysRevLett.108.011102
Bibliographic Code:		2012PhRvL.108a1102T

Abstract

The resonant excitation of neutron star (NS) modes by tides is investigated as a source of short gamma-ray burst (SGRB) precursors. We find that the driving of a crust-core interface mode can lead to shattering of the NS crust, liberating ˜10⁴⁶-10⁴⁷erg of energy seconds before the merger of a NS-NS or NS-black-hole binary. Such properties are consistent with Swift/BAT detections of SGRB precursors, and we use the timing of the observed precursors to place weak constraints on the crust equation of state. We describe how a larger sample of precursor detections could be used alongside coincident gravitational wave detections of the inspiral by Advanced LIGO class detectors to probe the NS structure. These two types of observations nicely complement one another, since the former constrains the equation of state and structure near the crust-core boundary, while the latter is more sensitive to the core equation of state.

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