Gravitational waves from low mass neutron stars

Horowitz, C J

doi:10.1103/PHYSREVD.81.103001

Title: Gravitational waves from low mass neutron stars

Full Record
Other Related Research

Abstract

Low mass neutron stars may be uniquely strong sources of gravitational waves. The neutron star crust can support large deformations for low mass stars. This is because of the star's weaker gravity. We find maximum ellipticities {epsilon} (fractional difference in moments of inertia) that are 1000 times larger, and maximum quadrupole moments Q{sub 22} over 100 times larger, for low mass stars than for 1.4M{sub {center_dot}}neutron stars. Indeed, we calculate that the crust can support an {epsilon} as large as 0.005 for a minimum mass neutron star. A 0.12M{sub {center_dot}}star, that is maximally strained and rotating at 100 Hz, will produce a characteristic gravitational wave strain of h{sub 0}=2.1x10{sup -24} at a distance of 1 kpc. The gravitational wave detector Advanced LIGO should be sensitive to such objects through out the Milky Way Galaxy. A low mass neutron star could be uniquely identified from a large observed spin down rate and its discovery would have important implications for general relativity, supernova mechanisms, and possibly nucleosynthesis.

Authors:

Horowitz, C J ^[1]

Department of Physics and Nuclear Theory Center, Indiana University, Bloomington, Indiana 47405 (United States)

Publication Date:: Sat May 15 00:00:00 EDT 2010

OSTI Identifier:: 21409685

Resource Type:: Journal Article

Journal Name:: Physical Review. D, Particles Fields

Additional Journal Information:: Journal Volume: 81; Journal Issue: 10; Other Information: DOI: 10.1103/PhysRevD.81.103001; (c) 2010 The American Physical Society; Journal ID: ISSN 0556-2821

Country of Publication:: United States

Language:: English

Subject:: 79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; DEFORMATION; DISTANCE; GENERAL RELATIVITY THEORY; GRAVITATION; GRAVITATIONAL WAVE DETECTORS; GRAVITATIONAL WAVES; MASS; MILKY WAY; MOMENT OF INERTIA; NEUTRON STARS; NUCLEOSYNTHESIS; QUADRUPOLE MOMENTS; SPIN; ANGULAR MOMENTUM; FIELD THEORIES; GALAXIES; MEASURING INSTRUMENTS; PARTICLE PROPERTIES; RADIATION DETECTORS; RELATIVITY THEORY; STARS; SYNTHESIS

Citation Formats


                    Horowitz, C J. Gravitational waves from low mass neutron stars.  United States: N. p., 2010. 
        Web.  doi:10.1103/PHYSREVD.81.103001.

Copy to clipboard


                    Horowitz, C J. Gravitational waves from low mass neutron stars.  United States.  https://doi.org/10.1103/PHYSREVD.81.103001

Copy to clipboard


                    Horowitz, C J. 2010.  
        "Gravitational waves from low mass neutron stars".  United States.  https://doi.org/10.1103/PHYSREVD.81.103001.

Copy to clipboard


                    
@article{osti_21409685,

  title        = {Gravitational waves from low mass neutron stars},

  author       = {Horowitz, C J},

  abstractNote = {Low mass neutron stars may be uniquely strong sources of gravitational waves. The neutron star crust can support large deformations for low mass stars. This is because of the star's weaker gravity. We find maximum ellipticities {epsilon} (fractional difference in moments of inertia) that are 1000 times larger, and maximum quadrupole moments Q{sub 22} over 100 times larger, for low mass stars than for 1.4M{sub {center_dot}}neutron stars. Indeed, we calculate that the crust can support an {epsilon} as large as 0.005 for a minimum mass neutron star. A 0.12M{sub {center_dot}}star, that is maximally strained and rotating at 100 Hz, will produce a characteristic gravitational wave strain of h{sub 0}=2.1x10{sup -24} at a distance of 1 kpc. The gravitational wave detector Advanced LIGO should be sensitive to such objects through out the Milky Way Galaxy. A low mass neutron star could be uniquely identified from a large observed spin down rate and its discovery would have important implications for general relativity, supernova mechanisms, and possibly nucleosynthesis.},

  doi          = {10.1103/PHYSREVD.81.103001},

  url          = {https://www.osti.gov/biblio/21409685},
  journal      = {Physical Review. D, Particles Fields},

  issn         = {0556-2821},

  number       = 10,

  volume       = 81,

  place        = {United States},

  year         = {Sat May 15 00:00:00 EDT 2010},

  month        = {Sat May 15 00:00:00 EDT 2010}

}

Copy to clipboard

Journal Article:

https://doi.org/10.1103/PHYSREVD.81.103001

Other availability

Find in Google Scholar

Search WorldCat to find libraries that may hold this journal

Save / Share:

Export Metadata

Save to My Library

Similar records in OSTI.GOV collections:

Gravitomagnetic resonant excitation of Rossby modes in coalescing neutron star binaries

Journal Article Flanagan, Eanna; Racine, Etienne - Physical Review. D, Particles Fields

In coalescing neutron star binaries, r-modes in one of the stars can be resonantly excited by the gravitomagnetic tidal field of its companion. This post-Newtonian gravitomagnetic driving of these modes dominates over the Newtonian tidal driving previously computed by Ho and Lai. To leading order in the tidal expansion parameter R/r (where R is the radius of the neutron star and r is the orbital separation), only the l=2, |m|=1, and |m|=2 r-modes are excited. The tidal work done on the star through this driving has an effect on the evolution of the inspiral and on the phasing of themore »« less
https://doi.org/10.1103/PHYSREVD.75.044001
Constraining crystalline color superconducting quark matter with gravitational-wave data

Journal Article Lapming, Lin - Physical Review. D, Particles Fields

We estimate the maximum equatorial ellipticity sustainable by compact stars composed of crystalline color-superconducting quark matter. For the theoretically allowed range of the gap parameter {delta}, the maximum ellipticity could be as large as 10{sup -2}, which is about 4 orders of magnitude larger than the tightest upper limit obtained by the recent science runs of the LIGO and GEO600 gravitational-wave detectors based on the data from 78 radio pulsars. We point out that the current gravitational-wave strain upper limit already has some implications for the gap parameter. In particular, the upper limit for the Crab pulsar implies that {delta}more »« less
https://doi.org/10.1103/PHYSREVD.76.081502
Constraining neutron-star tidal Love numbers with gravitational-wave detectors

Journal Article Flanagan, Eanna; Hinderer, Tanja - Physical Review. D, Particles Fields

Ground-based gravitational wave detectors may be able to constrain the nuclear equation of state using the early, low frequency portion of the signal of detected neutron star-neutron star inspirals. In this early adiabatic regime, the influence of a neutron star's internal structure on the phase of the waveform depends only on a single parameter {lambda} of the star related to its tidal Love number, namely, the ratio of the induced quadrupole moment to the perturbing tidal gravitational field. We analyze the information obtainable from gravitational wave frequencies smaller than a cutoff frequency of 400 Hz, where corrections to the internal-structuremore »« less
https://doi.org/10.1103/PHYSREVD.77.021502
Merger of binary neutron stars with realistic equations of state in full general relativity

Journal Article Shibata, Masaru; Taniguchi, Keisuke; Uryu, Koji - Physical Review. D, Particles Fields

We present numerical results of three-dimensional simulations for the merger of binary neutron stars in full general relativity. Hybrid equations of state are adopted to mimic realistic nuclear equations of state. In this approach, we divide the equations of state into two parts as P=P{sub cold}+P{sub th}. P{sub cold} is the cold part for which we assign a fitting formula for realistic equations of state of cold nuclear matter slightly modifying the formula developed by Haensel and Potekhin. We adopt the SLy and FPS equations of state for which the maximum allowed Arnowitt-Deser-Misner (ADM) mass of cold and spherical neutronmore »« less
https://doi.org/10.1103/PhysRevD.71.084021
Gravitational radiation from crystalline color-superconducting hybrid stars

Journal Article Knippel, Bettina; Sedrakian, Armen - Physical Review. D, Particles Fields

The interiors of high mass compact (neutron) stars may contain deconfined quark matter in a crystalline color-superconducting (CCS) state. On a basis of microscopic nuclear and quark matter equations of states we explore the internal structure of such stars in general relativity. We find that their stable sequence harbors CCS quark cores with masses M{sub core}{<=}(0.78-0.82)M{sub {center_dot}} and radii R{sub core}{<=}7 km. The CCS quark matter can support nonaxisymmetric deformations, because of its finite shear modulus, and can generate gravitational radiation at twice the rotation frequency of the star. Assuming that the CCS core is maximally strained we compute themore »« less
https://doi.org/10.1103/PHYSREVD.79.083007

Similar Records