publication . Preprint . Article . 2017

Dispersion and decay of collective modes in neutron star cores

D. N. Kobyakov; C. J. Pethick; S. Reddy; A. Schwenk;
Open Access English
  • Published: 23 Aug 2017
Abstract
We calculate the frequencies of collective modes of neutrons, protons and electrons in the outer core of neutron stars. The neutrons and protons are treated in a hydrodynamic approximation and the electrons are regarded as collisionless. The coupling of the nucleons to the electrons leads to Landau damping of the collective modes and to significant dispersion of the low-lying modes. We investigate the sensitivity of the mode frequencies to the strength of entrainment between neutrons and protons, which is not well characterized. The contribution of collective modes to the thermal conductivity is evaluated.
Subjects
arXiv: Nuclear Experiment
free text keywords: Nuclear Theory, Nuclear physics, Outer core, Neutron star, Atomic physics, Physics, Proton, Neutron, Dispersion (optics), Electron
Funded by
EC| STRONGINT
Project
STRONGINT
The strong interaction at neutron-rich extremes
  • Funder: European Commission (EC)
  • Project Code: 307986
  • Funding stream: FP7 | SP2 | ERC
27 references, page 1 of 2

[1] M. Hoffberg, A. E. Glassgold, R. W. Richardson, and M. Ruderman, Phys. Rev. Lett. 24, 775 (1970).

[2] A. Schwenk and B. Friman, Phys. Rev. Lett. 92, 082501 (2004).

[3] A. Gezerlis, C. J. Pethick, and A. Schwenk, in Novel Superfluids, Volume 2, ed. K. H. Bennemann and J. B. Ketterson (Oxford University Press, Oxford, 2014) p. 580. [OpenAIRE]

[4] R. I. Epstein, Astrophys. J. 333, 880 (1988).

[5] P. Bedaque and S. Reddy, Phys. Lett. B 735, 340 (2014).

[6] D. Kobyakov, L. Samuelsson, E. Lundh, M. Marklund, V. Bychkov, and A. Brandenburg, arXiv:1504.00570v4.

[7] D. N. Aguilera, V. Cirigliano, J. A. Pons, S. Reddy, and R. Sharma, Phys. Rev. Lett. 102, 091101 (2009).

[8] L. Landau, J. Phys. U.S.S.R. 9 25 (1945).

[9] K. Hebeler, J. M. Lattimer, C. J. Pethick, and A. Schwenk, Astrophys. J. 773, 11 (2013). [OpenAIRE]

[10] G. Mendell, Astrophys. J 380, 515 (1991).

[11] D. N. Kobyakov and C. J. Pethick, Astrophys. J. 836, 203 (2017).

[12] M. Borumand, R. Joynt, and W. Kluz´niak, Phys. Rev. C 54, 2745 (1996).

[13] P. S. Shternin and D. G. Yakovlev, Phys. Rev. D 78, 063006 (2008).

[14] B. Jancovici, Nuovo Cimento 25, 428 (1962).

[15] D. Bohm and T. Staver, Phys. Rev. 84, 836 (1951).

27 references, page 1 of 2
Powered by OpenAIRE Open Research Graph
Any information missing or wrong?Report an Issue
publication . Preprint . Article . 2017

Dispersion and decay of collective modes in neutron star cores

D. N. Kobyakov; C. J. Pethick; S. Reddy; A. Schwenk;