搜索结果: 1-11 共查到“天文学 dissipation”相关记录11条 . 查询时间(0.139 秒)
Spectral-Temporal Simulations of Internal Dissipation Models of Gamma-Ray Bursts
Spectral-Temporal Simulations Internal Dissipation Models Gamma-Ray Bursts
2011/10/19
We present calculations of the time evolution of the prompt spectra of gamma-ray burst models involving generic internal dissipation regions, including internal shocks, either by itself or in the pres...
A Fast Numerical Scheme for Causal Relativistic Hydrodynamics with Dissipation
relativistic hydrodynamics relativistic dissipation relativity kinetic theory methods: numerical
2011/9/13
In this paper, we develop a stable and fast numerical scheme for relativistic dissipative hydrodynamics based on Israel-Stewart theory. Israel-Stewart theory is a stable and causal description of diss...
Homochirality through Photon-Induced Melting of RNA/DNA: the Thermodynamic Dissipation Theory of the Origin of Life
Homochirality Photon-Induced Melting RNA/DNA
2011/1/13
The homochirality of the molecules of life has been a vexing problem with no generally accepted solution to date. Since a racemic mixture of chiral nucleotides frustrates the extension and replication...
Dissipation in dynamos at low and high magnetic Prandtl numbers
low and high magnetic Prandtl numbers Solar and Stellar Astrophysics
2011/1/10
Using simulations of helically driven turbulence, it is shown that the ratio of kinetic to magnetic energy dissipation scales with the magnetic Prandtl number in power law fashion with an exponent of ...
On the Implications of Late Internal Dissipation for Shallow-Decay Afterglow Emission and Associated High-Energy Gamma-Ray Signals
gamma-rays burst general— gamma rays theory— radiation mechanisms non-thermal
2010/11/10
The origin of the shallow-decay emission during early X-ray afterglows has been an open issue since the launch of the Swift satellite. One of the appealing models is the late internal dissipation mode...
A Reconnection Switch to Trigger Gamma-Ray Burst Jet Dissipation
accretion discs black hole physics galaxies jets gamma rays bursts MHD
2010/11/12
Prompt gamma-ray burst (GRB) emission requires some mechanism to dissipate an ultrarelativistic
jet. Internal shocks or some form of electromagnetic dissipation are candidate mechanisms.
Averting the magnetic braking catastrophe on small scales: disk formation due to Ohmic dissipation
Solar and Stellar Astrophysics (astro-ph.SR)
2010/12/29
We perform axisymmetric resistive MHD calculations that demonstrate that centrifugal disks can indeed form around Class 0 objects despite magnetic braking. We follow the evolution of a prestellar core...
New Insights into Dissipation in the Electron Layer During Magnetic Reconnection
New Insights Magnetic Reconnection Electron Layer
2010/3/8
Detailed comparisons are reported between laboratory observations of electron-scale dissipation layers near a reconnecting X-line and direct two-dimensional full-particle simulations. Many experimenta...
Turbulent dissipation in the interstellar medium：implications for galaxy formation and evolution
interstellar medium Massively-Parallel galaxy formation
2009/6/4
We describe ZEUS-MP: a Multi-Physics, Massively-Parallel, Message-Passingcode for astrophysical .uid dynamics simulations in 3 dimensions. ZEUS-MP is afollow-on to the sequential ZEUS-2D and ZEUS-3D c...
Oblique Propagation and Dissipation of Alfvén Waves in Coronal Holes
Sun Alfv´ en waves coronal holes solar wind
2009/5/12
We investigate the effect of viscosity and magnetic diffusivity
on the oblique propagation and dissipation of Alfv´en waves with respect
to the normal outward direction, making use of MHD equa...
Oblique Propagation and Dissipation of Alfvén Waves in Coronal Holes
Sun Alfv´ en waves coronal holes solar wind
2010/9/16
We investigate the effect of viscosity and magnetic diffusivity on the oblique propagation and dissipation of Alfv´en waves with respect to the normal outward direction, making use of MHD equati...