The extreme compression of the magnetosphere on May 4, 1998, as observed by the POLAR spacecraft

Autor:	Peter Chi, F. R. Fenrich, Xiaoyan Zhou, J.-H Shue, Janet G. Luhmann, Christopher T. Russell, Guan Le, S. M. Petrinec, Paul Song
Rok vydání:	2000
Předmět:	Physics Atmospheric Science Solar zenith angle Aerospace Engineering Astronomy Astronomy and Astrophysics Space weather Solar wind Geophysics Polar wind Magnetosheath Space and Planetary Science Coronal mass ejection General Earth and Planetary Sciences Magnetopause Interplanetary magnetic field
Zdroj:	Advances in Space Research. 25:1369-1375
ISSN:	0273-1177
DOI:	10.1016/s0273-1177(99)00646-8
Popis:	On May 4, 1998 the velocity and density of the solar wind were high and the interplanetary magnetic field was strong and southward. The POLAR spacecraft crossed the dayside magnetopause well inside geosynchronous orbit, at 5.3 R E and a solar zenith angle of 19°. After this crossing, POLAR spent most of the rest of its outbound orbit in the magnetosheath and for brief periods crossed into the solar wind at distances from 7.3 R E and a solar zenith angle of 32° to a distance of only 8.5 R E and a solar zenith angle of 45°. This corresponds to subsolar distances of only 6.8 to 7.5 R E for the shock. During this very disturbed period of time, predictions of the locations of the magnetopause by both Shue and co-workers and by Petrinec and co-workers indicate extreme distortions of the magnetopause location. Because of the importance of such events to the understanding of space weather, we recommend that this event be pursued as a special IACG 2 campaign.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::275fc0cee8980516c47a2c582434b4fd https://doi.org/10.1016/s0273-1177(99)00646-8 Zobrazit plný text záznamu Full Text from ScienceDirect