Evidence Linking Slow Solar Wind Streams to Long-Decay X-Ray Events

Autor:	F. Farnik, Zdeněk Švestka
Rok vydání:	2005
Předmět:	Solar minimum Physics Solar wind Interplanetary scintillation Space and Planetary Science Astronomy and Astrophysics Outflow STREAMS Maxima Atmospheric sciences
Zdroj:	Solar Physics. 229:305-312
ISSN:	1573-093X 0038-0938
DOI:	10.1007/s11207-005-6881-6
Popis:	Outflow of slow solar wind from solar active regions has been reported in recent years by many different authors. Therefore, in this paper we have studied synoptic maps of the solar wind density (SWD) based on interplanetary scintillation (IPS) data for available parts of all the years 1991–1994 and 1997–2001 to verify correlations of maxima in SWD with sources in active regions. We have found convincing evidence that eruptive flares in active regions, and thus X-ray long-decay events (LDEs) in general, can produce short-lived enhancements of the SWD. However, we were not able to get statistically convincing evidence that active regions can be permanent sources of slow solar wind, and propose three possible reasons for this negative result.
Databáze:	OpenAIRE
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