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Caught speeding:Clocking the fastest-spinning brown dwarfs（图）
Caught speeding Clocking fastest-spinning brown dwarfs
2021/4/23
Astronomers have discovered the most rapidly rotating brown dwarfs -- three brown dwarfs that each complete a full rotation roughly once every hour. The rate is so extreme that if they rotated any fas...
A team of researchers, led by a group at the University of California, Riverside, have demonstrated for the first time the transmission of electrical signals through insulators in a sandwich-like stru...
Spinning-particle model for the Dirac equation and the relativistic Zitterbewegung
Spinning-particle model the Dirac equation the relativistic Zitterbewegung
2011/7/28
Abstract: We construct the relativistic particle model without Grassmann variables which meets the following requirements. A) Canonical quantization of the model implies the Dirac equation. B) The var...
Quantum dispersion relations for excitations of long folded spinning superstring in AdS_5 x S^5
Quantum dispersion relations folded spinning superstring
2010/12/23
We use AdS_5 x S^5 superstring sigma model perturbation theory to compute the leading one-loop corrections to the dispersion relations of the excitations near a long spinning string in AdS. This inves...
Fine structure of the Poynting-Robertson effect for a luminous spinning relativistic star
Fine structure the Poynting-Robertson effect
2010/12/27
As a sequel to our recent works challenging toward the systematic inclusion of the effect of radiation on the trajectory of a test particle orbiting around a luminous spinning relativistic star event...
Superkicks in ultrarelativistic encounters of spinning black holes
Superkicks ultrarelativistic encounters spinning black holes
2010/12/20
We study ultrarelativistic encounters of two spinning, equal-mass black holes through simulations in full numerical relativity. Two initial data sequences are studied in detail: one that leads to scat...
Matrix Factorization for an SO(2) Spinning Top and Related Problems
Matrix Factorization SO(2) Spinning Top Related Problems
2010/11/1
We study the matrix factorization problem associated with an SO(2) spinning top by using the algebro-geometric approach. We derive the explicit expressions in terms of Riemann theta functions and dis...
A Ray-Tracing Algorithm for Spinning Compact Object Spacetimes with Arbitrary Quadrupole Moments. I. Quasi-Kerr Black Holes
black hole physics radiative transfer relativity
2010/12/21
We describe a new numerical algorithm for ray tracing in the external spacetimes of spinning compact objects characterized by arbitrary quadrupole moments. Such spacetimes describe non-Kerr vacuum sol...
Fine structure of the Poynting-Robertson effect for a luminous spinning relativistic star
Fine structure Poynting-Robertson effect luminous spinning relativistic star
2010/12/21
As a sequel to our recent works challenging toward the systematic inclusion of the effect of
radiation on the trajectory of a test particle orbiting around a luminous spinning relativistic star event...
Perturbative effects of spinning black holes with applications to recoil velocities
Perturbative effects of spinning black holes applications recoil velocities
2010/12/20
Recently, we proposed an enhancement of the Regge-Wheeler-Zerilli formalism for first-order perturbations about a Schwarzschild background that includes first-order corrections due to the background b...
Next-to-leading order spin-orbit and spin(a)-spin(b) Hamiltonians for n gravitating spinning compact objects
post-Newtonian approximation binary and multiple stars celestial mechanics
2010/12/20
We derive the post-Newtonian next-to-leading order conservative spin-orbit and spin(a)-spin(b)
gravitational interaction Hamiltonians for arbitrary many compact objects. The spin-orbit Hamiltonian co...
Molecular Frisbee: Motion of Spinning Molecules in Inhomogeneous Fields
Molecular Frisbee Motion Spinning Molecules Inhomogeneous Fields
2010/11/9
Several laser techniques have been suggested and demonstrated recently for preparing polarizable molecules in rapidly spinning states with a disc-like angular distribution. We consider motion of thes...
Particle Accelerators inside Spinning Black Holes
Particle Accelerators Spinning Black Holes
2010/3/18
On the basis of the Kerr metric as a model for a spinning black hole accreting test particles from rest at infinity, I show that the center-of-mass energy for a pair of colliding particles is generica...
The search for spinning black hole binaries in mock LISA data using a genetic algorithm
black hole binaries genetic algorithm
2010/3/18
Coalescing massive Black Hole binaries are the strongest and probably the most important gravitational wave sources in the LISA band. The spin and orbital precessions bring complexity in the waveform ...
Spinning binary waveforms via PN expansion: Equal-mass case
binary waveforms post-Newtonian Equal-mass case
2010/3/18
Complete expressions of time-domain gravitational waveforms for spinning binary inspirals via the post-Newtonian (PN) approximation would require determination of the phase, amplitude, inclination ang...