Numerical Relativity Estimates of the Remnant Recoil Velocity in Binary Neutron Star Mergers

Abstract

We present, for the first time, recoil velocity estimates for binary neutron star mergers using data from numerical relativity simulations. We find that binary neutron star merger remnants can have recoil velocity of the order of a few tens of km/s and as high as $150$ km/s in our dataset. These recoils are attained due to equivalent contributions from the anisotropic gravitational wave emission as well as the asymmetric ejection of dynamical matter during the merger. We provide fits for net recoil velocity as well as its ejecta component as a function of the amount of ejected matter, which may be useful when constraints on the ejected matter are obtained through electromagnetic observations. We also estimate the mass and spin of the remnants and find them to be in the range $[2.34,3.38]M_{\odot }$ and $[0.63,0.82]$ respectively, for our dataset.

14 pages, 9 figures

References in corpus (30)

• Array Programming with NumPy
• GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral
• Advanced Virgo: a 2nd generation interferometric gravitational wave detector
• Multi-messenger Observations of a Binary Neutron Star Merger
• Advanced LIGO
• GW190814: Gravitational Waves from the Coalescence of a 23 M${}_{\odot }$ Black Hole with a 2.6 M${}_{\odot }$ Compact Object
• The Combined Ultraviolet, Optical, and Near-Infrared Light Curves of the Kilonova Associated with the Binary Neutron Star Merger GW170817: Unified Data Set, Analytic Models, and Physical Implications
• Hierarchical mergers of stellar-mass black holes and their gravitational-wave signatures
• AT2017gfo: an anisotropic and three-component kilonova counterpart of GW170817
• New Hyperon Equations of State for Supernovae and Neutron Stars in Density-dependent Hadron Field Theory
• THC: a new high-order finite-difference high-resolution shock-capturing code for special-relativistic hydrodynamics
• Neutron star kicks by the gravitational tug-boat mechanism in asymmetric supernova explosions: progenitor and explosion dependence
• Remnant mass, spin, and recoil from spin aligned black-hole binaries
• Gravitational Recoil during Binary Black Hole Coalescence using the Effective One Body Approach
• On the Rate of Neutron Star Binary Mergers from Globular Clusters
• Mass-gap Mergers in Active Galactic Nuclei
• Exploring the Lower Mass Gap and Unequal Mass Regime in Compact Binary Evolution
• A New Open-Source Nuclear Equation of State Framework based on the Liquid-Drop Model with Skyrme Interaction
• Black Hole Formation in the Lower Mass Gap through Mergers and Accretion in AGN Disks
• On the formation of GW190814
• On the possibility of GW190425 being a black hole--neutron star binary merger
• GW190412 as a Third-Generation Black Hole Merger from a Super Star Cluster
• Second release of the CoRe database of binary neutron star merger waveforms
• Is GW190425 consistent with being a neutron star$-$black hole merger?
• Remnant Black Hole Kicks and Implications for Hierarchical Mergers
• Microscopic equation of state of hot nuclear matter for numerical relativity simulations
• A study of the agreement between binary neutron star ejecta models derived from numerical relativity simulations
• Properties of binary components and remnant in GW170817 using equations of state in finite temperature field theory models
• On Escaping a Galaxy Cluster in an Accelerating Universe
• The mass, spin and rotational energy of the remnant black holes from compact binary mergers

Cited by in corpus (3)

• Possible binary neutron star merger history of the primary of GW230529
• The infrared counterpart and proper motion of magnetar SGR0501+4516
• Effect of kick velocity on gravitational wave detection of binary black holes with space- and ground-based detectors