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arXiv 1111.5465astro-ph.HEastro-ph.GA
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超新星遗迹的修正均分计算

Modified equipartition calculation for supernova remnants

B. Arbutina, D. Urosevic, M. M. Andjelic, M. Z. Pavlovic, B. Vukotic

摘要:

确定星际介质中的磁场强度是当代天体物理学最复杂的任务之一。我们只能通过使用几种非常有限的方法来估计磁场强度的数量级。除了塞曼效应和法拉第旋转外,均分或最小能量计算是一种仅利用射电同步辐射估算磁场强度和磁场及宇宙线粒子所含能量的普遍方法。尽管它的近似性质,它仍然是一个有用的工具,特别是当没有其他数据的磁场的来源。本文给出了一个修正的计算方法,我们认为它更适合于估算超新星遗迹中的磁场强度和能量。最后,我们提出了计算估计的磁场强度的所有银河系信噪比的必要的观测数据是可用的。用于计算SNR的磁场强度的网络应用程序可在http://poincare.matf.bg.ac.rs/~arbo/eqp/获得。

英文摘要:

Determination of the magnetic field strength in the interstellar medium is one of the most complex tasks of contemporary astrophysics. We can only estimate the order of magnitude of the magnetic field strength by using a few very limited methods. Besides Zeeman effect and Faraday rotation, the equipartition or the minimum-energy calculation is a widespread method for estimating magnetic field strength and energy contained in the magnetic field and cosmic ray particles by using only the radio synchrotron emission. Despite of its approximate character, it remains a useful tool, especially when there is no other data about the magnetic field in a source. In this paper we give a modified calculation which we think is more appropriate for estimating magnetic field strengths and energetics in supernova remnants (SNRs). Finally, we present calculated estimates of the magnetic field strengths for all Galactic SNRs for which the necessary observational data are available. The web application for calculation of the magnetic field strength of SNRs is available at http://poincare.matf.bg.ac.rs/~arbo/eqp/.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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