Angular distribution of solar wind parameters
نویسندگان
چکیده
منابع مشابه
Angular Distribution of Solar Wind Magnetic Field Vector at 1 Au
We study the angular distribution of the solar wind magnetic field vector at 1 AU and its solar cycle dependence using ACEobservations. A total of twelve27.27 day(the duration of a solar rotation) intervals during the solar maximum, the solar minimum, as well as the ascending and descending phases of solar cycle 23 are examined. For all selected intervals, we obtain the angular distribution ...
متن کاملThe distribution of solar wind speeds during solar minimum: Calibration for numerical solar wind modeling constraints on the source of the slow solar wind
[1] It took the solar polar passage of Ulysses in the early 1990s to establish the global structure of the solar wind speed during solar minimum. However, it remains unclear if the solar wind is composed of two distinct populations of solar wind from different sources (e.g., closed loops which open up to produce the slow solar wind) or if the fast and slow solar wind rely on the superradial exp...
متن کاملSolar Wind Parameters for Magnetospheric Magnetic Field Modeling
Magnetospheric magnetic field models are crucial for many space weather applications. However, the latest empirical models require solar wind and IMF data, which are not always available. Data gaps are especially common for times before the launch of the WIND spacecraft at the end of 1994, but even after then there are data gaps. We present a method to interpolate the solar wind characteristics...
متن کاملStatistical study of the substorm onset: its dependence on solar wind parameters and solar illumination
Based on 1829 well-defined substorm onsets in the Northern Hemisphere, observed during a 2-year period by the FUV Imager on board the IMAGE spacecraft, a statistical study is performed. From the combination of solar wind parameter observations by ACE and magnetic field observations by the low altitude satellite CHAMP, the location of auroral breakups in response to solar illumination and solar ...
متن کاملGlobal distribution of the solar wind during solar cycle 23: ACE observations
[1] The composition of the solar wind can be used to determine its origin at the Sun; e.g., solar wind from coronal holes has demonstrably lower charge states than solar wind of other origins. The O/O ratio as measured by Advanced Composition Explorer (ACE) during 1998– 2008 is used to divide the solar wind into three categories: non-transient solar wind from coronal holes (hereafter referred t...
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ژورنال
عنوان ژورنال: Astronomical School’s Report
سال: 2003
ISSN: 2411-6602,1607-2855
DOI: 10.18372/2411-6602.04.2072