Formation of Flows and Structures Associated with Magnetic Fields in Active Astronomical Objects.

活动天体中与磁场相关的流动和结构的形成。

• 批准号: 05302014
• 负责人: HANAWA Tomoyuki
• 金额: $ 4.29万
• 依托单位: Nagoya University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Co-operative Research (A)
• 财政年份: 1993
• 资助国家: 日本
• 起止时间: 1993 至 1994
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-05302014/
• 关键词: Magnetohydrodynamics; Solar Flares; Star Formation; Active Galactic Nuclei; Jet; Magnetic Reconnection; Numerical Simulation; 構造形成; リコネクション; ダイナモ; 活動現象; 粒子加速

Under this project we have had five scientific meetings during 1993-1994 FY.1.In the workshop 'Numerical Methods for Magnetohydrodynamics' (Nagoya, Aug.1993), we studied a numerical scheme for solving ideal magnetohydrodynamics.2.In the symposium 'Astronomy Developed by Computer Simulatoins' (Atami, Nov.1993), we exchanged information on numerical simulations with emphasis on the use of super computers and networks.3.In the symposium 'Electro-and Magnetohydrodynamical Phenomena in Relativistic Astronomical Objects' (Nagoya, Dec.1993), we discussed magnetohydrodynamics in a neutron star and near a black hole.4.In the symposium 'Magnetohydrodynamical Instabilities, Reconnection, and Dynamo' (Mitaka, Feb.1994), we reviewed the recent progresses in magnetohydronamical instabilities, magnetic reconnection, and dynamo action.The reviewers were the specialists in fusion plasma physics, solar-terrestrial magnetohydrodynamics, and astrophysics. The reviews are up-to-date while concise, and highly appreciated by the audience.5.In the symposium 'Formation of Flows and Structures Associated with Magnetic Fields' (Nagoya, Jan.1995), interesting papers are presented on the gravitational collapse of a magnetized gaseous disk, the unified theory of solar flares, magnetic collimation of jet in AGN and pulsars, magnetic wind from an accretion disk, and other magnetohydrodynamical phenomena in astrophysical objects.We have also collaborated on the analysis of numerical simulations. The main aim of this project, understanding the formation of magnetohydrodynamical flows and structures, has been achieved successfully.

在这个项目下，我们在1993-1994财年举行了五次科学会议。1.在磁流体力学的数值方法研讨会(名古屋，1993年8月)中，我们研究了求解理想磁流体力学的数值方案。2.在计算机模拟天文学研讨会(Atami，1993 11)中，我们交换了数值模拟方面的信息，重点是超级计算机和网络的使用。3.在相对论天文天体中的电和磁流体动力学现象(名古屋，1993年12月)中，我们讨论了中子星和黑洞附近的磁流体动力学。4.在磁流体不稳定性、重联和黑洞附近的研讨会和迪纳摩(Mitaka，1994年2月)，我们回顾了磁流体不稳定性、磁重联和发电机作用的最新进展。评审者是聚变等离子体物理、日地磁流体力学和天体物理的专家。5.在“与磁场相关的流动和结构的形成”研讨会(名古屋，1995年1月)中，有趣的论文包括磁化气盘的引力坍缩、太阳耀斑的统一理论、活动星系核和脉冲星中喷流的磁准直、吸积盘中的磁风以及天体物理对象中的其他磁流体动力学现象。我们还合作进行了数值模拟分析。本项目的主要目标--了解磁流体力学流动和结构的形成，已经成功地实现了。

项目成果

S.Shibata: "Luminosity of an Externally Triggered Discharge in the Dead Pulsar Magnetosphere and the Current Closure Problem" Mon.Not.R astr.Soc.269. 191-198 (1994)

S.Shibata：“死脉冲星磁层中外部触发放电的光度和电流闭合问题”Mon.Not.R astr.Soc.269。

F.Nakamura et al.: "Fragmentation of Filamentary Molecular Clouds with Longitudinal and Helical Magnetic Fields" Pub.Astron.Soc.Japan. 45. 551-566 (1993)

F.Nakamura 等人：“纵向和螺旋磁场对丝状分子云的碎片”Pub.Astron.Soc.Japan。

K.Shibata et al.: "A Gigantic Coronal Jet Ejected from a Compact Active Region in a Coronal Hole" Astrophys.J.Let.431. L51-L53 (1994)

K.Shibata 等人：“从冕洞紧凑活动区域喷射出的巨大日冕射流”Astrophys.J.Let.431。

Fumitaka Nakamura: "Fragmcntation of Filamentary Molecular Clouds with Longitudinal and Helical Magnetic Fields" Publications of the Astronomical Society of Japan. 45. 551-566 (1993)

Fumitaka Nakamura：“利用纵向和螺旋磁场对丝状分子云进行碎片化”，日本天文学会出版物。

Tomoyuki Hanawa: "Sequential Star Formation in Taurus Molecular Cloud 1" Astrophysical Journal. 420. 318-325 (1994)

Tomoyuki Hanawa：“金牛座分子云 1 中的连续恒星形成”天体物理学杂志。