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VARIOUS DYNAMICAL PUZZLE PIECES IN THE SEISMIC RUBIK'S CUBE

机译:地震魔仪的立方体中的各种动态拼图

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Helioseismology and asteroseismology are both advancing rapidly, each inspired by the observational tools that have either become available recently, or will soon be functioning. Thus GONG+, SOHO/MDI, MOST and soon CoRoT and SDO/HMI will each contribute to expanding the data bases available for probing the interior of stars, joined by a range of individual observational projects. Although variable stars come in many forms, the sun and solar-like stars share many aspects that challenge our understanding of the interior dynamics and structure attained within them. The intricate coupling of turbulent convection, rotation and magnetism plays a central role in these stars, and much of this can now be probed, especially with spatially-resolved observations of the sun. Thus the Rubik's Cube has many elements, both from local helioseismic probing and from theoretical modeling, that are likely to become aligned as we rotate the panels and attain a clearer picture of what occurs within a star. We discuss some of the dynamical issues that are likely to be a focus of new observational and analysis efforts now under way and being planned. The structure of the solar near-surface shear layer with its multiple scales of motion, many interacting with magnetism, is beginning to be intensely studied. Yet its dynamic origin and potential variability as the solar cycle advances has yet to be clarified. The manner in which the solar differential rotation appears to be established within the bulk of the convection zone is now partly understood through simulations, placing significant constraints on the patterns of meridional circulations that are likely present. Since these are more complex than assumed in mean field flux-transport models that replicate some aspects of the solar cycle, it is essential to get guidance from helioseismic deductions about the deeper circulations. The tachocline of rotational shear at the base of the convection zone is the likely seat of the global dynamo, providing the means to build strong toroidal magnetic fields that eventually erupt. Devising helioseismic means to probe variations in this region should be a major effort as we try to devise and test self-consistent dynamical models for this subtle boundary layer. The sun continues to reveal itself as a remarkably complex magnetic star, a property likely shared by many other stars now being studied or contemplated.
机译:HelioSeismology和Asteroseismology均迅速推进,每项灵感来自最近可用的观测工具,或者很快就会运作。因此,Gong +,Soho / MDI,最快的Corot和SDO / HMI将各自有助于扩展可用于探测恒星内部的数据库,加入一系列个别观测项目。尽管变量恒星有多种形式,但太阳和太阳能的星星分享了许多方面,这些方面挑战了我们对其内部达到的内部动态和结构的理解。湍流对流,旋转和磁性的复杂耦合在这些恒星中起着核心作用,现在可以探测大部分时间,特别是在太阳的空间分辨观察中。因此,Rubik的立方体有许多元素,无论是来自局部的Liphoseismic探测和理论建模,那么可能会在旋转面板时变为对齐,并达到明星内发生的内容的更清晰的图像。我们讨论了一些动态问题,这可能是现在正在进行的新观察和分析工作的重点。太阳近表面剪切层的结构具有多种运动尺度,许多与磁性相互作用,开始强烈地研究。然而,随着太阳循环进展的尚未澄清其动态起源和潜在的变化。现在通过模拟部分地理解了在对流区域的大量对流区域内建立太阳差动旋转的方式,对可能存在的子午线的经历循环模式施加重大限制。由于这些更复杂,而不是在复制太阳循环的某些方面的平均场磁通传输模型中的均复杂,因此必须从Helioseismic扣除关于更深入的循环的情况下获得指导。对流区底座的旋转剪切的Tachocline是全球发电机的可能座位,提供了构建最终爆发的强环形磁场的手段。在我们尝试设计和测试这种细微边界层的自我一致动态模型时,设计了角度来探测该区域的变化应该是一项重大努力。太阳继续揭示自己作为一个非常复杂的磁的明星,这可能被许多其他恒星共享的财产,现在正在研究或考虑。

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