搜索结果: 76-90 共查到“知识库 太阳与太阳系”相关记录683条 . 查询时间(2.416 秒)
Collisions and Gravitational Reaccumulation:Forming Asteroid Families and Satellites
Collisions and Gravitational Asteroid Families Satellites
2015/12/25
Numerical simulations of the collisional disruption of large asteroids show that although the parent body is totally shattered, subsequent gravitational reaccumulation leads to the formation of an ent...
Direct N-body Simulations of Rubble Pile Collisions
asteroids collisional physics impact processes planetary formation planetesimals
2015/12/25
There is increasing evidence that many kilometer-sized bodies in the Solar System are piles of rubble bound together by gravity. We present results from a project to map the parameter space of collisi...
Formation of Asteroid Families by Catastrophic Disruption:Simulations with Fragmentation and Gravitational Reaccumulation
asteroids dynamics planetesimals resonances surfaces asteroids
2015/12/25
This paper builds on preliminary work in which numerical simulations of the collisional disruption of large asteroids (represented by the Eunomia and Koronis family parent bodies) were performed and w...
Direct Large-Scale N-Body Simulations of Planetesimal Dynamics
N-body simulation planetesimals planetary formation planetary dynamics resonances
2015/12/25
We describe a new direct numerical method for simulating planetesimal dynamics in which N ～ 106 or more bodies can be evolved simultaneously in three spatial dimensions over hundreds ofdynamical times...
太阳质子事件中短期预报模型研究
太阳质子事件 太阳质子通量 中短期预报模型 航天任务
2018/5/4
太阳质子事件通量的预测对航天器抗辐射加固设计和航天员出舱活动具有非常重要的意义.针对一年以下的航天任务，利用经验统计方法，确认太阳活跃年和太阳平静年期间，1——365天不同时间段内 > 10MeV，> 30MeV和 > 60MeV的太阳质子事件积分通量符合对数正态分布，且通量对数的标准偏差σ和期望值μ随任务期时间的变化满足对数函数形式.以此为基础，构建太阳质子通量的中短期预报模型.该模型能够针对太...
We have re-measured control points and re-computed a control point network for Saturn’s satellite Dione. Our network
is based on16 images (obtained by the narrow-angle cameras of Voyager I and II), 1...
用推迟引力求解GP-B轨道进动
GP-B轨道进动 推迟引力 角向加速度 引力辐射
2015/5/28
水星进动被认为是对广义相对论及其它引力理论的最重要检验。但由于Le Verrier/Newcomb等所用的行星摄动模型(质量均匀分布的圆环)太粗略，有关论证缺乏说服力。相比而言，GP-B陀螺的轨道数据是清晰的、准确的,是检验广义相对论及其它引力理论的可靠判据。考虑到GP-B轨道的偏心率极小，本文改用圆轨道的角向加速度公式计算角向附加引力是合理的, 也简化了我以前用推迟引力求解GP-B进动的方法。两...
Depth profiling analysis of solar wind helium collected in diamond-like carbon film from Genesis
solar wind depth profile helium NASA Genesis mission post-ionization
2017/4/10
The distribution of solar-wind ions in Genesis mission collectors, as determined by depth profiling analysis, constrains
the physics of ion-solid interactions involving the solar wind. Thus, they pro...
Origin Of Coronal High Temperature
center temperature gasification substances bian sphere coronal high
2015/6/2
In sun center, pressure least direction is ends of sun spin axis. Thus, sun center ultra-high temperature gasification substance jet out along sun's rotation axis, through photosphere, chromosphere, t...
金星对水星的牛顿轨道之摄动
太阳起潮力 地球固体潮 行星摄动 水星轨道进动
2015/5/28
行星对水星的摄动作用类似于日、月对地球上海水或地壳的潮汐作用。本文以金星对水星的摄动为例，考虑了金星在每一瞬间的摄动作用，计算了金星摄动力对水星轨道的影响。与Le Verrier和Newcomb将所有的行星轨道都看成质量均匀分布的同心圆环模型相比，本文的论证和计算方法更接近太阳系的实际情况。
哥白尼日心说推翻了托勒密地心说。开普勒椭圆理论推翻了托勒密摆线方法论。1687年，牛顿在《自然哲学的数学原理》里提出了质心说，揭露了物质运动的本质。通过逻辑推理，摆线与质心说是不同参考系的同一个理论。以公共质心（简称质心）为参考系，两个天体都绕质心运动。变换参考系，用实体为参考系，太阳绕质心运动，换成质心绕太阳运动。这样，行星绕太阳运动轨道就是摆线。摆线是天体的本质轨道。这是质心说和摆线327年的...
由于在牛顿万有引力公式中不含时间，人们便理所当然地认为引力从引力源发出的时间与到达被作用物体的时间是相同的，即引力是以无穷大速度传播的。实际上，开普勒行星三定律是从长期、大量的光学观测中归纳出来的客观规律，很好地反映了行星在太阳引力作用下作视运动的实际状况，这是检验引力理论的极好依据。本文以地球在太阳引力作用下围绕太阳转动为例，检验牛顿万有引力的传播特性。牛顿万有引力定律与开普勒观测的高度一致性，...
现在我们的理解还在于物质理论，认为物质是组成我们星球的根本。但也有很多的现象无法解释，比如地球的自转，
火山的喷发还有地壳运动等，地球中心是什么，我们探测不到，更看不到，那么地球的中心和我们的地心吸力有什么联系。
THE SINGLE-DEGENERATE BINARY ORIGIN OF TYCHO'S SUPERNOVA AS TRACED BY THE STRIPPED ENVELOPE OF THE COMPANION
X-ray arc Tycho's supernova
2014/12/20
We propose that a nonthermal X-ray arc inside the remnant of Tycho's supernova (SN) represents the interaction between the SN ejecta and the companion star's envelope lost in the impact of the explosi...