搜索结果: 1-11 共查到“天文学 Boundary”相关记录11条 . 查询时间(0.112 秒)
Photospheric Signatures of Granular-scale Flux Emergence and Cancellation at the Penumbral Boundary
Photospheric Signatures Granular-scale Flux Emergence Cancellation Penumbral Boundary
2011/10/13
We studied flux emergence events of sub-granular scale in a solar active region. New Solar Telescope (NST) of Big Bear Solar Observatory made it possible to clearly observe the photospheric signature ...
Photospheric Signatures of Granular-scale Flux Emergence and Cancellation at the Penumbral Boundary
Photospheric Signatures Granular-scale Flux Emergence Cancellation Penumbral Boundary
2011/10/17
We studied flux emergence events of sub-granular scale in a solar active region. New Solar Telescope (NST) of Big Bear Solar Observatory made it possible to clearly observe the photospheric signature ...
Identification of the Lithium Depletion Boundary and Age of the Southern Open Cluster Blanco 1
Identification the Lithium Depletion Boundary
2011/1/13
We present results from a spectroscopic study of the very low mass members of the Southern open cluster Blanco 1 using the Gemini-N telescope. We obtained intermediate resolution (R~4400) GMOS spectra...
Time-variability in the Interstellar Boundary Conditions of the Heliosphere over the past 60,000 years: Impact of the Solar Journey on the Galactic Cosmic Ray Flux at Earth
Time-variability the Interstellar Boundary Conditions
2011/1/10
During the solar journey through galactic space, variations in the physical properties of the surrounding interstellar material (ISM) modify the heliosphere and modulate the flux of galactic cosmic ra...
Supersonic Downflows at the Umbra-Penumbra Boundary of Sunspots
Solar and Stellar Astrophysics (astro-ph.SR)
2010/12/23
High resolution spectropolarimetric observations of 3 sunspots taken with {\em Hinode} demonstrate the existence of supersonic downflows at or close to the umbra-penumbra boundary which have not been ...
Boundary stress tensors for spherically symmetric conformal Rindler observers
surface energy conformal Rindler geometry horizon en-tropy equipartition law
2010/3/22
The boundary energy - momentum tensors for a static observer in the conformally flat Rindler geometry are considered. We found the surface energy is positive far form the Planck world but the transver...
On the final definition of the causal boundary and its relation with the conformal boundary
causal structure Kronheimer and Penrose construction chronological sets and completions causal boundary conformal boundary globally hyperbolic spacetimes naked singularities Penrose-Carter diagrams
2010/3/19
The notion of causal boundary $\partial M$ for a strongly causal spacetime $M$ has been a controversial topic along last decades: on one hand, some attempted definitions were not fully consistent, on ...
The No-Boundary Measure in the Regime of Eternal Inflation
no-boundary wave function inflationary histories cosmology infinite universes
2010/3/18
The no-boundary wave function (NBWF) specifies a measure for prediction in cosmology that selects inflationary histories and remains well behaved for spatially large or infinite universes. This paper ...
DISCRETE APPROXIMATIONS FOR SINGULARLY PERTURBED BOUNDARY VALUE PROBLEMS WITH PARABOLIC LAYERS, II
2007/12/11
In his series of three papers we study
singularly perturbed (SP)
boundary value problems for equations of elliptic
and parabolic type.
For small values of the perturbation parameter
parabolic bou...
DISCRETE APPROXIMATIONS FOR SINGULARLY PERTURBED BOUNDARY VALUE PROBLEMS WITH PARABOLIC LAYERS, III
2007/12/11
In this series of three papers we study
singularly perturbed (SP)
boundary value problems for equations of elliptic
and parabolic type.
For small values of the perturbation parameter
parabolic bo...
DISCRETE APPROXIMATIONS FOR SINGULARLY PERTURBED BOUNDARY VALUE PEOBLEMS WITH PARABOLIC LAYERS, I
2007/12/11
In this series of three papers we study
singularly perturbed (SP)
boundary value problems for equations of elliptic
and parabolic type.
For small values of the perturbation parameter
parabolic bo...