标题： 太阳辐射区中的磁场界限 显示英文标题

标题： Bounds on the Magnetic Fields in the Radiative Zone of the Sun

摘要： 我们讨论了可能埋藏在太阳辐射区中的磁场强度的上限。 计算了所有轴对称环形欧姆衰减本征模的场分布和衰减时间，这些模的寿命超过了太阳的年龄。 太阳扁率的测量结果给出了磁场强度的上限约为7 MG。 从太阳振荡频率分裂的分析中预计也会得到类似的上限。 对双扩散不稳定的理论分析也得到了类似的上限。 因此，在目前的灵敏度水平下，扁率测量结果预期无法测量到环形磁场的贡献。 显示英文摘要

摘要： We discuss bounds on the strength of the magnetic fields that could be buried in the radiative zone of the Sun. The field profiles and decay times are computed for all axisymmetric toroidal Ohmic decay eigenmodes with lifetimes exceeding the age of the Sun. The measurements of the solar oblateness yield a bound <~ 7 MG on the strength of the field. A comparable bound is expected to come from the analysis of the splitting of the solar oscillation frequencies. The theoretical analysis of the double diffusive instability also yields a similar bound. The oblateness measurements at their present level of sensitivity are therefore not expected to measure a toroidal field contribution.