搜索结果: 1-15 共查到“知识库 太阳系物理学”相关记录56条 . 查询时间(4.498 秒)
X级质子耀斑的特征研究
质子耀斑 非质子耀斑 日冕物质抛射
2018/5/4
为了更加准确地判断X级耀斑是否引发质子事件，对X级质子耀斑和非质子耀斑的耀斑积分通量、源区、CME速度、CME角宽度、背景太阳风速度及背景X射线通量的分布进行了统计研究.发现非质子耀斑和质子耀斑的积分通量、经度、CME速度和CME角宽度具有明显不同的分布.非质子耀斑大多集中在东部，耀斑积分通量小于0.3J·m-2，CME速度小于1300km·s-1的区域内；质子耀斑大多集中在中部或西部，耀斑积分通...
Preface: Evolution of the early solar system: Presolar cosmochemical fingerprints and the formation of watery rocky planets
Presolar cosmochemical fingerprints the formation of watery rocky planets
2017/4/10
Recent developments in cosmochemistry of high-precision
and high spatial resolution isotope analyses, and of
high-performance computing techniques, have enabled
cosmochemists to gain vital insight ...
STEREO卫星的CME观测研究进展
太阳物理学 STEREO CME 三角测量
2012/9/12
简要回顾利用“日地关系天文台”（SolarTerrestrialRelationsObservatory，STEREO）卫星的立体观测资料在日冕物质抛射fCoronalMassEjection，CME）研究方面已取得的一些重要进展，主要包括：（1）通过极紫外成像仪观测到的日冕极紫外暗化来更准确地估计CME质量，研究CME演化的结构特征；（2）利用STEREO卫星日冕仪的双角度观测，在CME立体传播...
Simulating the Common Envelope Phase of a Red Giant Using SPH and Uniform Grid Codes
Simulating Common Envelope Phase Red Giant Using SPH Uniform Grid Codes
2011/10/21
We use three-dimensional hydrodynamical simulations to study the rapid infall phase of the common envelope interaction of a red giant branch star of mass equal to 0.88 \msun and a companion star of ma...
Variable and Transient Radio Sources in the FIRST Survey
Variable Transient Radio Sources FIRST Survey
2011/10/20
A comprehensive search for variable and transient radio sources has been conducted using ~55,000 snapshot images of the FIRST survey. We present an analysis leading to the discovery of 1,627 variable ...
Sc III Spectral Properties of Astrophysical Interest
Oscillator strengths lifetimes coupled-cluster method
2011/10/18
Transition properties such as oscillator strengths, transition rates, branching ratios and lifetimes of many low-lying states in the doubly ionized scandium (Sc III) are reported. A relativistic metho...
A grid of NLTE corrections for magnesium and calcium in late-type giant and supergiant stars: application to Gaia
formation radiative transfer stars late-type atmospheres abundances
2011/10/18
We investigate NLTE effects for magnesium and calcium in the atmospheres of late-type giant and supergiant stars. The aim of this paper is to provide a grid of NLTE/LTE equivalent width ratios W/W* of...
杭州市大气气溶胶光学特性研究
杭州市 气溶胶光学厚度 m指数 中分辨率成像光谱仪(MODIS) 太阳分光光度计
2011/7/27
利用太阳分光光度计(CE-318)对杭州市地面的气溶胶光学特性进行观测,并对卫星反演的中分辨率成像光谱仪(Moderate Resolution Imaging Spectroradiometer,MODIS)气溶胶产品进行验证.结果表明,MODIS气溶胶产品在杭州地区的精度较高,3个站点全部数据回归曲线的斜率和截距分别为1.02和-0.14(RSME=0.22,R2=0.71).在此基础上,利用...
Bridges between helioseismological and asteroseismological inference
stellar interiors helioseismology - asteroseismology
2011/10/21
Exactly eighty years ago, a very young Yehudi Menuhin was invited by Bruno Walter to perform Beethoven's violin concerto with the Berlin Philharmonic Orchestra. Walking through the streets of Berlin h...
The nature of the Na I D-lines in the Red Rectangle
ISM: jets and outfl ows – stars: AGB and post-AGB – stars: individ-ual(HD 44179) – stars: mass-loss – binaries: close
2011/10/19
In this paper we examine the profiles of the complex Na I D-lines in the Red Rectangle. The spectra were acquired with the ARCES \'{e}chelle spectrograph R = 38,000 on the 3.5-m telescope at the Apach...
A Spectroscopic Study of DD UMa: Ursa Major Group Member and Candidate for BRITE
individual: DD UMa stars: abundances – technique: spectroscopic
2011/10/19
The Ursa Major group is a nearby stellar supercluster which, while not gravitationally bound, is defined by co-moving members. DD UMa is a $\delta$ Scuti star whose membership in the Ursa Major group ...
Solar Influence on Nuclear Decay Rates: Constraints from the MESSENGER Mission
stroparticle physics – nuclear reactions – Sun:particle emission
2011/10/12
We have analyzed Cs-137 decay data, obtained from a small sample onboard the MESSENGER spacecraft en route to Mercury, with the aim of setting limits on a possible correlation between nuclear decay ra...
Dynamical Opacity-Sampling Models of Mira Variables. II: Time-Dependent Atmospheric Structure and Observable Properties of 4 M-Type Model Series
stars: AGB and post-AGB, stars: atmospheres, stars: variables: other, stars: mass loss
2011/10/11
We present 4 model series of the CODEX dynamical opacity-sampling models of Mira variables with solar abundances, designed to have parameters similar to $o$ Cet, R Leo and R Cas. We demonstrate that t...
The Solar Dynamics Observatory (SDO) was launched in February 2010 and is now providing an unprecedented view of the solar activity at high spatial resolution and high cadence covering a broad range o...
In cool stars that oscillate like the Sun, non-radial modes become mixed as the stars evolve. The mixing is caused by the coupling between g-modes in the stellar core and p-modes in the envelope, whic...