首页> 外文期刊>The Astrophysical journal >SOLAR IMPLICATIONS OF ULYSSES INTERPLANETARY FIELD MEASUREMENTS
【24h】

SOLAR IMPLICATIONS OF ULYSSES INTERPLANETARY FIELD MEASUREMENTS

机译:行星际场测量的太阳意义

获取原文
获取原文并翻译 | 示例
           

摘要

Recent observations by the Ulysses magnetometer team have shown that the strength of the radial interplanetary field component, ∣B_r∣, is essentially independent of latitude, a result which implies that the heliospheric currents are confined entirely to thin sheets. Using such a current sheet model, we extrapolate the observed photospheric field to 1 AU and compare the predicted magnitude and sign of B_r with spacecraft measurements during 1970-1993. Approximate agreement can be obtained if the solar magnetograph measurements in the Fe I λ5250 line are scaled upward by a latitude-dependent factor, similar to that derived by Ulrich from a study of magnetic saturation effects. The correction factor implies sharply peaked polar fields near sunspot minimum, with each polar coronal hole having a mean field strength of 10 G.
机译:尤利西斯(Ilysses)磁力计小组最近的观察表明,径向行星际场分量∣B_r∣的强度基本上与纬度无关,其结果暗示着日层电流完全局限于薄板。使用这种当前的工作表模型,我们将观测到的光球场外推到1 AU,并用1970-1993年的航天器测量结果比较B_r的预测大小和符号。如果将Fe Iλ5250线中的太阳磁图测量结果按纬度相关因子向上缩放(与Ulrich从磁饱和效应研究中得出的结果类似),则可以获得近似一致性。校正因子意味着在黑子极小值附近出现尖锐的峰值极化场,每个极地日冕孔的平均场强为10G。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号