ECCENTRIC MERGERS OF BLACK HOLES WITH SPINNING NEUTRON STARS

被引：30

作者：

East, William E. ^{[1
]}

Paschalidis, Vasileios ^{[2
]}

Pretorius, Frans ^{[2
]}

机构：

[1] Stanford Univ, Kavli Inst Particle Astrophys & Cosmol, SLAC Natl Accelerator Lab, Menlo Pk, CA 94025 USA

[2] Princeton Univ, Dept Phys, Princeton, NJ 08544 USA

来源：

ASTROPHYSICAL JOURNAL LETTERS | 2015年 / 807卷 / 01期

基金：

美国国家科学基金会;

关键词：

black hole physics; gamma-ray burst: general; gravitation; gravitational waves; stars: neutron; BINARY; RADIO; EMISSION;

D O I：

10.1088/2041-8205/807/1/L3

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study dynamical capture binary black hole-neutron star (BH-NS) mergers focusing on the effects of the neutron star spin. These events may arise in dense stellar regions, such as globular clusters, where the majority of neutron stars are expected to be rapidly rotating. We initialize the BH-NS systems with positions and velocities corresponding to marginally unbound Newtonian orbits, and evolve them using general-relativistic hydrodynamical simulations. We find that even moderate spins can significantly increase the amount of mass in unbound material. In some of the more extreme cases, there can be up to a third of a solar mass in unbound matter. Similarly, large amounts of tidally stripped material can remain bound and eventually accrete onto the BH-as much as a tenth of a solar mass in some cases. These simulations demonstrate that it is important to treat neutron star spin in order to make reliable predictions of the gravitational wave and electromagnetic transient signals accompanying these sources.

引用

页数：7

共 41 条

[1] Predictions for the rates of compact binary coalescences observable by ground-based gravitational-wave detectors [J].

Abadie, J. ;

Abbott, B. P. ;

Abbott, R. ;

Abernathy, M. ;

Accadia, T. ;

Acerneseac, F. ;

Adams, C. ;

Adhikari, R. ;

Ajith, P. ;

Allen, B. ;

Allen, G. ;

Ceron, E. Amador ;

Amin, R. S. ;

Anderson, S. B. ;

Anderson, W. G. ;

Antonuccia, F. ;

Aoudiaa, S. ;

Arain, M. A. ;

Araya, M. ;

Aronsson, M. ;

Arun, K. G. ;

Aso, Y. ;

Aston, S. ;

Astonea, P. ;

Atkinson, D. E. ;

Aufmuth, P. ;

Aulbert, C. ;

Babak, S. ;

Baker, P. ;

Ballardin, G. ;

Ballmer, S. ;

Barker, D. ;

Barnum, S. ;

Baroneac, F. ;

Barr, B. ;

Barriga, P. ;

Barsotti, L. ;

Barsuglia, M. ;

Barton, M. A. ;

Bartos, I. ;

Bassiri, R. ;

Bastarrika, M. ;

Bauchrowitz, J. ;

Bauera, Th S. ;

Behnke, B. ;

Beker, M. G. ;

Benacquista, M. ;

Bertolini, A. ;

Betzwieser, J. ;

Beveridge, N. .

CLASSICAL AND QUANTUM GRAVITY, 2010, 27 (17)

[2]

[Anonymous], 2005, ASP C SER

[3]

[Anonymous], 2012, ARXIV12110310 LSST D

[4]

[Anonymous], ARXIVASTROPH0510256

[5] EFFECT OF A HIGH OPACITY ON THE LIGHT CURVES OF RADIOACTIVELY POWERED TRANSIENTS FROM COMPACT OBJECT MERGERS [J].

Barnes, Jennifer ;

Kasen, Daniel .

ASTROPHYSICAL JOURNAL, 2013, 775 (01)

[6] Mergers of binary neutron stars with realistic spin [J].

Bernuzzi, Sebastiano ;

Dietrich, Tim ;

Tichy, Wolfgang ;

Bruegmann, Bernd .

PHYSICAL REVIEW D, 2014, 89 (10)

[7] FORMATION AND EVOLUTION OF BINARY AND MILLISECOND RADIO PULSARS [J].

BHATTACHARYA, D ;

VANDENHEUVEL, EPJ .

PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 1991, 203 (1-2) :1-124

[8] Mergers of Magnetized Neutron Stars with Spinning Black Holes: Disruption, Accretion, and Fallback [J].

Chawla, Sarvnipun ;

Anderson, Matthew ;

Besselman, Michael ;

Lehner, Luis ;

Liebling, Steven L. ;

Motl, Patrick M. ;

Neilsen, David .

PHYSICAL REVIEW LETTERS, 2010, 105 (11)

[9] RAPIDLY ROTATING POLYTROPES IN GENERAL-RELATIVITY [J].

COOK, GB ;

SHAPIRO, SL ;

TEUKOLSKY, SA .

ASTROPHYSICAL JOURNAL, 1994, 422 (01) :227-242

[10] Observing complete gravitational wave signals from dynamical capture binaries [J].

East, William E. ;

McWilliams, Sean T. ;

Levin, Janna ;

Pretorius, Frans .

PHYSICAL REVIEW D, 2013, 87 (04)

← 1 2 3 4 5 →