Intra cluster MAGnetic fields origiNATing from star formatION processes

源自恒星形成过程的星团内磁场

• 批准号: 126995580
• 负责人: Privatdozent Dr. Klaus Dolag
• 金额: --
• 依托单位: Lehrstuhl für beobachtende und experimentelle Astrophysik
• 依托单位国家: 德国
• 项目类别: Priority Programmes
• 财政年份: 2009
• 资助国家: 德国
• 起止时间: 2008-12-31 至 2011-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/126995580?language=en
• 关键词: Intra; cluster; MAGnetic; fields; origiNATing

Galaxy clusters are the largest, quasi-equilibrium objects in the Universe, making them extraordinarily interesting for cosmology and astrophysics. In these systems, non-thermal components such as magnetic field and high energy particles keep a record of the processes acting since early times till now. These components play key roles by controlling transport processes inside the cluster atmosphere and are sources of additional pressure and energy support. The goal of this proposal is to incorporate the seeding of the ICM with magnetic fields driven by star formation processes and AGN activity. Coupling the magnetic field to the cooling and star formation processes will allow us to study the dynamical importance of magnetic fields in the so-called cooling flow regions in the centers of clusters but also potentially in the proto galactic environments and will significantly contribute to our understanding of the global dynamics of these systems. This will be done (for the first time) within fully self consistent, cosmological MHD simulations. The resulting magnetization of the ICM will also be compared with recent and forthcoming observations in radio band. The project is carried out within an already implemented, international network of collaborations and also will allow an exchange of PhD students as part of their training as well as to integrate them into such international collaborations.

星系团是宇宙中最大的准平衡天体，这使得它们对宇宙学和天体物理学非常感兴趣。在这些系统中，磁场和高能粒子等非热成分记录了从早期到现在的过程。这些成分通过控制团簇大气内部的传输过程发挥关键作用，并且是额外压力和能量支持的来源。这个提议的目标是将ICM的播种与由星星形成过程和活动星系核活动驱动的磁场结合起来。耦合磁场的冷却和星星的形成过程将使我们能够研究在所谓的冷却流区域的集群的中心，但也可能在原银河系环境中的磁场的动力学的重要性，并将显着有助于我们了解这些系统的全球动力学。这将（首次）在完全自洽的宇宙学MHD模拟中完成。由此产生的ICM磁化也将与最近和即将在无线电波段的观测进行比较。该项目是在已经实施的国际合作网络中进行的，也将允许博士生的交流作为他们培训的一部分，并将他们纳入这种国际合作。

项目成果

Measuring cosmic magnetic fields by rotation measure-galaxy cross-correlations in cosmological simulations

通过旋转测量宇宙学模拟中的星系互相关来测量宇宙磁场

• DOI: 10.1111/j.1365-2966.2010.17166.x
• 发表时间: 2010
• 期刊: Monthly Notices of the Royal Astronomical Society
• 影响因子: 4.8
• 作者: Stasyszyn;Donnert
• 通讯作者: Donnert

Rotation measures of radio sources in hot galaxy clusters

• DOI: 10.1051/0004-6361/200913665
• 发表时间: 2010-07
• 期刊: Astronomy and Astrophysics
• 影响因子: 6.5
• 作者: F. Govoni;K. Dolag;M. Murgia;L. Feretti;S. Schindler;G. Giovannini;W. Boschin;V. Vacca;A. Bonafede

Galactic ménage à trois: simulating magnetic fields in colliding galaxies

银河管理 à trois：模拟碰撞星系中的磁场

• DOI: 10.1111/j.1365-2966.2011.18932.x
• 发表时间: 2011
• 期刊: Monthly Notices of the Royal Astronomical Society
• 影响因子: 4.8
• 作者: Kotarba;Johansson;Donnert;Stasyszyn
• 通讯作者: Stasyszyn

Radio haloes from simulations and hadronic models – I. The Coma cluster

来自模拟和强子模型的射电晕 – I 后发星团

• DOI: 10.1111/j.1365-2966.2009.15655.x
• 发表时间: 2010
• 期刊: Monthly Notices of the Royal Astronomical Society
• 影响因子: 4.8
• 作者: Donnert;Cassano;Brunetti
• 通讯作者: Brunetti

A non-ideal magnetohydrodynamic GADGET: simulating massive galaxy clusters

• DOI: 10.1111/j.1365-2966.2011.19523.x
• 发表时间: 2011-07
• 期刊: Monthly Notices of the Royal Astronomical Society
• 影响因子: 4.8
• 作者: A. Bonafede;K. Dolag;F. Stasyszyn;G. Murante;S. Borgani