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Effective Gyroresonance Layers in the Transition Region of the Active Region of the Solar Atmosphere. Magnetic Fields and Heights
Astrophysical Bulletin ( IF 1.2 ) Pub Date : 2020-04-15 , DOI: 10.1134/s1990341320010071
L. V. Yasnov , V. M. Bogod , A G. Stupishin

Abstract—We present a method of determination of numbers of gyroresonance layers most effectively radiating in the transition region of the active solar atmosphere. It is based on determination of frequency in the spectrum of an extraordinary wave of an active region, at which the gradient of this spectrum abruptly rises. Observations of 29 active regions carried out at the RATAN-600 radio telescope have been analyzed. The magnetic field in the transition region was determined from the frequency of bending point in the spectrum of antenna temperatures in an extraordinary mode under condition of emission in the third harmonic of the gyrofrequency. The relation between the photospheric magnetic field strength and the magnetic field strength in the transition region (1.52–2.28) is substantially greater than previously obtained, namely, the field isdecreasedonlyby10–20% in the transition region. The heights in the transition region were determined from the reconstructed magnetic field in the nonlinear force-free approximation, and are in the range of 1.00–3.57 Mm.

中文翻译:

太阳大气活动区过渡区中的有效回旋共振层。磁场和高度

摘要-我们提出了一种确定在活动太阳大气过渡区域中最有效辐射的回旋共振层数的方法。它基于确定活动区域的非常规波的频谱中的频率,在该频率处该频谱的梯度突然上升。分析了在RATAN-600射电望远镜上进行的29个活动区域的观测。过渡区域中的磁场是由陀螺频率三次谐波发射条件下的非常规模式下天线温度频谱中的弯曲点频率确定的。光球磁场强度与过渡区磁场强度(1.52至2.28)之间的关系要比先前获得的要大得多,即 在过渡区域中,该字段仅减少10-20%。过渡区的高度由非线性无力近似中的重构磁场确定,范围为1.00-3.57 Mm。
更新日期:2020-04-15
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