Direct URCA process in neutron stars

James M. Lattimer; C. J. Pethick; Madappa Prakash; Pawel Haensel

doi:10.1103/PhysRevLett.66.2701

Direct URCA process in neutron stars

James M. Lattimer
, C. J. Pethick
, Madappa Prakash
, Pawel Haensel

Physics and Astronomy

NORDITA
University of Illinois at Urbana-Champaign
Stony Brook University
Nicolaus Copernicus Astronomical Center of the Polish Academy of Sciences

Research output: Contribution to journal › Article › peer-review

757 Scopus citations

Abstract

We show that the direct URCA process can occur in neutron stars if the proton concentration exceeds some critical value in the range 11-15%. The proton concentration, which is determined by the poorly known symmetry energy of matter above nuclear density, exceeds the critical value in many current calculations. If it occurs, the direct URCA process enhances neutrino emission and neutron star cooling rates by a large factor compared to any process considered previously.

Original language	English
Pages (from-to)	2701-2704
Number of pages	4
Journal	Physical Review Letters
Volume	66
Issue number	21
DOIs	https://doi.org/10.1103/PhysRevLett.66.2701
State	Published - 1991

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10.1103/PhysRevLett.66.2701

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title = "Direct URCA process in neutron stars",

abstract = "We show that the direct URCA process can occur in neutron stars if the proton concentration exceeds some critical value in the range 11-15\%. The proton concentration, which is determined by the poorly known symmetry energy of matter above nuclear density, exceeds the critical value in many current calculations. If it occurs, the direct URCA process enhances neutrino emission and neutron star cooling rates by a large factor compared to any process considered previously.",

author = "Lattimer, \{James M.\} and Pethick, \{C. J.\} and Madappa Prakash and Pawel Haensel",

year = "1991",

doi = "10.1103/PhysRevLett.66.2701",

language = "English",

volume = "66",

pages = "2701--2704",

journal = "Physical Review Letters",

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AU - Lattimer, James M.

AU - Pethick, C. J.

AU - Prakash, Madappa

AU - Haensel, Pawel

PY - 1991

Y1 - 1991

N2 - We show that the direct URCA process can occur in neutron stars if the proton concentration exceeds some critical value in the range 11-15%. The proton concentration, which is determined by the poorly known symmetry energy of matter above nuclear density, exceeds the critical value in many current calculations. If it occurs, the direct URCA process enhances neutrino emission and neutron star cooling rates by a large factor compared to any process considered previously.

AB - We show that the direct URCA process can occur in neutron stars if the proton concentration exceeds some critical value in the range 11-15%. The proton concentration, which is determined by the poorly known symmetry energy of matter above nuclear density, exceeds the critical value in many current calculations. If it occurs, the direct URCA process enhances neutrino emission and neutron star cooling rates by a large factor compared to any process considered previously.

UR - https://www.scopus.com/pages/publications/0000595109

U2 - 10.1103/PhysRevLett.66.2701

DO - 10.1103/PhysRevLett.66.2701

M3 - Article

AN - SCOPUS:0000595109

SN - 0031-9007

VL - 66

SP - 2701

EP - 2704

JO - Physical Review Letters

JF - Physical Review Letters

IS - 21

ER -

Direct URCA process in neutron stars

Abstract

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