The effect of coronal mass ejections on the structure of the heliospheric current sheetThe existence of a stable heliospheric current sheet (HCS) structure near solar cycle maximum was questioned since the recognition that coronal mass ejections (CME's) occur in coronal helmet streamers. Evidence is presented suggesting that pre-existing helmet streamers disrupted or blown out by CME's reform in a time interval much shorter than the life time of the HCS, and that the concept of the HCS has a meaning at any time of thesolar cycle. It appears that the HCS, the current layer that separates adjacent interplanetary magnetic field regions with opposite magnetic polarity, exists throughout the solar cycle, though not always as a thin disk-like sheet. The sheet may be thickened by embedded magnetic ropes formed by CME's, especially near sunspot maximum. The HCS may be used as timing mark in identifying or predicting CME's in the interplanetary medium.
Document ID
19950025503
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Zhao, Xuepu (Stanford Univ. CA, United States)
Hoeksema, J. Todd (Stanford Univ. CA, United States)
Date Acquired
August 16, 2013
Publication Date
December 1, 1994
Publication Information
Publication: ESA, Proceedings of 3rd SOHO Workshop on Solar Dynamic Phenomena and Solar Wind Consequences