Black-hole–neutron-star mergers at realistic mass ratios: Equation of state and spin orientation effects
نویسندگان
چکیده
Francois Foucart, M. Brett Deaton, Matthew D. Duez, Lawrence E. Kidder, Ilana MacDonald, Christian D. Ott, Harald P. Pfeiffer, Mark A. Scheel, Bela Szilagyi, and Saul A. Teukolsky Canadian Institute for Theoretical Astrophysics, University of Toronto, Toronto, Ontario M5S 3H8, Canada Department of Physics and Astronomy, Washington State University, Pullman, Washington 99164, USA Center for Radiophysics and Space Research, Cornell University, Ithaca, New York 14853, USA Department of Astronomy and Astrophysics, University of Toronto, Toronto, Ontario M5S 3H5, Canada Theoretical Astrophysics 350-17, California Institute of Technology, Pasadena, California 91125, USA (Received 23 December 2012; published 2 April 2013)
منابع مشابه
Relativistic SPH Calculations of Compact Binary Mergers
We review recent progress in understanding the hydrodynamics of compact binary mergers using relativistic smoothed particle hydrodynamics (SPH) codes. Recent results are discussed for both double neutron stars and black hole – neutron star binaries. The gravitational wave signals from these mergers contain a lot of information about the masses and radii of the stars and the equation of state of...
متن کاملDynamical ejecta from precessing neutron star-black hole mergers with a hot, nuclear-theory based equation of state
Neutron star-black hole binaries are among the strongest sources of gravitational waves detectable by current observatories. They can also power bright electromagnetic signals (gamma-ray bursts, kilonovae), and may be a significant source of production of r-process nuclei. A misalignment of the black hole spin with respect to the orbital angular momentum leads to precession of that spin and of ...
متن کاملBlack Hole-Neutron Star Mergers as Central Engines of Gamma-Ray Bursts.
Hydrodynamic simulations of the merger of stellar mass black hole-neutron star binaries are compared with mergers of binary neutron stars. The simulations are Newtonian but take into account the emission and back-reaction of gravitational waves. The use of a physical nuclear equation of state allows us to include the effects of neutrino emission. For low neutron star-to-black hole mass ratios, ...
متن کاملSpin and Isospin Asymmetry, Equation of State and Neutron Stars
In the present work, we have obtained the equation of state for neutron star matter considering the in uence of the ferromagnetic and antiferromagnetic spin state. We have also investigated the structure of neutron stars. According to our results, the spin asymmetry stiens the equation of state and leads to high mass for the neutron star.
متن کاملMass ejection in neutron star mergers
We present the results of 3D Newtonian SPH simulations of the merger of a neutron star binary. The microscopic properties of matter are described by the physical equation of state of Lattimer and Swesty (LS-EOS). To check the model dependence of the results we vary the resolution (∼ 21000 and ∼ 50000 particles), the equation of state (stiff and soft polytropes), the artificial viscosity scheme,...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2013