搜索结果: 106-120 共查到“天体力学”相关记录307条 . 查询时间(2.065 秒)
Effects of orbital ellipticity on collisional disruptions of rubble-pile asteroids
Celestial mechanics Methods:numerical Minor planets,asteroids:general Planets and satellites:physical evolution
2015/12/25
The behavior of debris ejected from asteroids after collisional disruptions has significant implications for asteroid evolution. Analytical approximations of the elliptic restricted three-body system ...
An implementation of the soft-sphere discrete element method in a high-performance parallel gravity tree-code
Bulk solids Solar system DEM Hopper SSDEM
2015/12/25
We present our implementation of the soft-sphere discrete element method (SSDEM) in the parallel gravitational N-body code pkdgrav, a well-tested simulation package that has been used to provide many ...
1620 GEOGRAPHOS AND 433 EROS:SHAPED BY PLANETARY TIDES?
celestial mechanics stellar dynamics E minor planets asteroids
2015/12/25
Until recently, most asteroids were thought to be solid bodies whose shapes were determined largely by collisions with other asteroids. Recent work by Burns and others has shown that many asteroids ma...
Professor Marvin Leventhal,Department of Astronomy at University of Maryland
Professor Marvin Leventhal Department of Astronomy at University of Maryland
2015/12/23
Professor CHRIS REYNOLDS,Department of Astronomy at University of Maryland
Professor CHRIS REYNOLDS Department of Astronomy at University of Maryland
2015/12/23
![](http://www.firstlight.cn/upload/imgfile/201512/23/2015122310519125.png)
Professor derek c. richardson,Department of Astronomy at University of Maryland(图)
Professor derek c. richardson Department of Astronomy at University of Maryland
2015/12/23
Professor derek c. richardson,Department of Astronomy at University of Maryland,Here you will find links to my research, teaching, and other items of possible interest. I update these pages as often a...
![](http://www.firstlight.cn/upload/imgfile/201511/26/2015112615350142.jpg)
中国天文学家发现黑洞高速喷射物质的新模式(图)
天文学 黑洞 高速喷射物质
2015/11/26
国际顶级科学期刊《自然》2015年11月25日公布了一项中国科学家的重大科学发现。这项成果是中国科学院大学天文与空间科学学院教授、国家天文台研究员刘继峰带领团队在国际上首次从超软X射线源发现相对论性高速喷流,打破了天文学界以往的认知,揭示了黑洞吸积和喷流形成的新方式。《自然》杂志认为此项工作是2015年度本领域内最重要的五大发现之一。
![](http://www.firstlight.cn/upload/imgfile/201511/5/2015115163851280.jpg)
Associate Professor Riccardo Giovanelli,Department of Astronomy at Cornell University(图)
Associate Professor Riccardo Giovanelli Department of Astronomy at Cornell University
2015/11/5
James Lloyd is developing instrumentation and experimental techniques for the study of extrasolar planets with Adaptive optics and interferometry.
He spent 2 years at the South Pole working on the So...
![](http://www.firstlight.cn/upload/imgfile/201511/5/2015115163648562.jpg)
Professor Riccardo Giovanelli,Department of Astronomy at Cornell University(图)
Professor Riccardo Giovanelli Department of Astronomy at Cornell University
2015/11/5
![](http://www.firstlight.cn/upload/imgfile/201511/5/2015115163546655.png)
Professor Martha P. Haynes,Department of Astronomy at Cornell University(图)
Professor Martha P. Haynes Department of Astronomy at Cornell University
2015/11/5
![](http://www.firstlight.cn/upload/imgfile/201511/5/2015115163434655.jpg)
Professor Terry Herter,Department of Astronomy at Cornell University(图)
Professor Terry Herter Department of Astronomy at Cornell University
2015/11/5
![](http://www.firstlight.cn/upload/imgfile/201511/5/2015115162232296.jpg)
Professor David Chernoff,Department of Astronomy at Cornell University(图)
Professor David Chernoff Department of Astronomy at Cornell University
2015/11/5
![](http://www.firstlight.cn/upload/imgfile/202111/17/2021111714275795.png)
2015年10月21-25日,荷兰射电天文研究所Willem. Adrianus. Baan教授应邀访问中国科学院新疆天文台。
中国科学院新疆天文台2016年接收推荐免试生招生简章
中国科学院新疆天文台 2016年 免试生 招生简章
2015/8/27
新疆天文台2016年接收高等学校具有推荐免试资格的优秀应届本科毕业生免试攻读学术型硕士学位研究生。新疆天文台具有博士培养点,硕士期间可申请硕转博。能取得高校推荐免试资格的考生,可与天文台研招办直接联系推免接收事宜。
![](http://www.firstlight.cn/upload/imgfile/20155/29/201552915584265.jpg)
中国科学院上海天文台发现Blazar天体喷流的长期视向内运动
中国科学院上海天文台 Blazar天体 运动
2015/5/29
活动星系核,即活动星系的核心。普遍认为普通星系与活动星系的中心都存在质量在百万个太阳质量以上的大质量黑洞,两者的差异主要是普通星系的中心黑洞周围并没有太多物质供它消耗,所以普通星系中心的发光强度远低于活动星系。喷流是活动星系核的重要组成部分,是自中心超大质量黑洞处激发的运动速度接近光速的相对论性等离子体流。喷流的尺度可达数百万秒差距(1秒差距=3.26光年,1光年=94605亿千米)。根据活动星系...