Research in Theoretical Astrophysics: Accretion, Structure and Evolution in Gravitating Systems

理论天体物理学研究：引力系统中的吸积、结构和演化

• 批准号: PP/E00119X/1
• 负责人: Andrew King
• 金额: $ 236.59万
• 依托单位: University of Leicester
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2007
• 资助国家: 英国
• 起止时间: 2007 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=PP%2FE00119X%2F1
• 关键词: Research; Theoretical; Astrophysics; Accretion; Structure

We propose to undertake a broad programme of research in theoretical astrophysics. This research will be centered around accretion, structure and evolution in many astrophysical systems. Accretion is the process whereby a gravitating body accumulates mass from its surroundings. As the mass falls towards the body it can give up energy in the form of heat and light. Accretion onto a black hole is the most efficient way of extracting energy from normal matter. Astrophysical systems powered by accretion are among the luminous in the universe. Gravity not only powers these systems but determines their large scaled structure and long term evolution. The systems we aim to study cover many length scales, from compact binary star systems which would happily fit inside the Sun to colliding galaxies which consist of many billions of Sun-like stars.

我们建议在理论天体物理学方面开展广泛的研究计划。这项研究将围绕许多天体物理系统中的吸积、结构和演化展开。吸积是引力物体从其周围积累质量的过程。当质量落向身体时，它会以热和光的形式释放能量。吸积到黑洞上是从正常物质中提取能量的最有效方式。吸积提供能量的天体物理系统是宇宙中最明亮的系统之一。重力不仅为这些系统提供动力，还决定了它们的大规模结构和长期演化。我们的目标是研究许多长度尺度的系统，从适合太阳内部的致密双星系统，到由数十亿颗类太阳恒星组成的碰撞星系。

项目成果

A possible formation scenario for dwarf spheroidal galaxies - I. Fiducial model

矮椭球星系可能的形成情景 - I. 基准模型

• DOI: 10.1093/mnras/stt458
• 发表时间: 2013
• 期刊: Monthly Notices of the Royal Astronomical Society
• 影响因子: 4.8
• 作者: Assmann P

A possible formation scenario for dwarf spheroidal galaxies - II. A parameter study

矮椭球星系可能的形成情景 - II。

• DOI: 10.1093/mnras/stt1448
• 发表时间: 2013
• 期刊: Monthly Notices of the Royal Astronomical Society
• 影响因子: 4.8
• 作者: Assmann P

Design concepts for the Cherenkov Telescope Array CTA: an advanced facility for ground-based high-energy gamma-ray astronomy

• DOI: 10.1007/s10686-011-9247-0
• 发表时间: 2011-12-01
• 期刊: EXPERIMENTAL ASTRONOMY
• 影响因子: 3
• 作者: Actis, M.;Agnetta, G.;Zychowski, P.
• 通讯作者: Zychowski, P.

Precession of the Sagittarius stream

人马座流的进动

• DOI: 10.1093/mnras/stt1862
• 发表时间: 2013-01
• 期刊: Monthly Notices of the Royal Astronomical Society
• 影响因子: 4.8
• 作者: M. I. Wilkinson;G. Gilmore;E. W. Olszewski;M. Niederste-Ostholt
• 通讯作者: M. Niederste-Ostholt

AN EXTREMELY TOP-HEAVY INITIAL MASS FUNCTION IN THE GALACTIC CENTER STELLAR DISKS

• DOI: 10.1088/0004-637x/708/1/834
• 发表时间: 2009-08
• 期刊: The Astrophysical Journal
• 作者: H. Bartko;Fabrice Martins;S. Trippe;T. Fritz;R. Genzel;T. Ott;F. Eisenhauer;S. Gillessen