Phase transitions in neutron stars and maximum masses

被引:88
作者
Heiselberg, H
Hjorth-Jensen, M
机构
[1] NORDITA, DK-2100 Copenhagen O, Denmark
[2] Univ Oslo, Dept Phys, N-0316 Oslo, Norway
关键词
dense matter; stars : neutron;
D O I
10.1086/312321
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Using the most recent realistic effective interactions for nuclear matter with a smooth extrapolation to high densities including causality, we constrain the equation of state and calculate maximum masses of rotating neutron stars. First- and second-order phase transitions to, e.g., quark matter at high densities are included. If neutron star masses of similar to 2.3 M-circle dot. from quasi-periodic oscillations in low-mass X-ray binaries are confirmed, a soft equation of state as well as strong phase transitions can be excluded in neutron star cores.
引用
收藏
页码:L45 / L48
页数:4
相关论文
共 23 条
[11]  
Kapusta J., 1994, Finite-Temperature Field Theory, P163
[12]   NEUTRON-STAR CRUSTS [J].
LORENZ, CP ;
RAVENHALL, DG ;
PETHICK, CJ .
PHYSICAL REVIEW LETTERS, 1993, 70 (04) :379-382
[13]  
MADSEN J, 1998, ASTROPH9809032
[14]   Sonic-point model of kilohertz quasi-periodic brightness oscillations in low-mass X-ray binaries [J].
Miller, MC ;
Lamb, FK ;
Psaltis, D .
ASTROPHYSICAL JOURNAL, 1998, 508 (02) :791-830
[15]  
OROSZ JA, 1999, IN PRESS MNRAS
[16]  
PSALTIS D, 1999, ASTROPH9903105
[17]   MAXIMUM MASS OF A NEUTRON STAR [J].
RHOADES, CE ;
RUFFINI, R .
PHYSICAL REVIEW LETTERS, 1974, 32 (06) :324-327
[18]  
SCHAAB C, 1999, IN PRESS MNRAS
[19]   Lense-Thirring precession and quasi-periodic oscillations in low-mass X-ray binaries [J].
Stella, L ;
Vietri, M .
ASTROPHYSICAL JOURNAL, 1998, 492 (01) :L59-L62
[20]   Neutron star mass measurements. I. Radio pulsars [J].
Thorsett, SE ;
Chakrabarty, D .
ASTROPHYSICAL JOURNAL, 1999, 512 (01) :288-299