The Statistical Properties of Solar Wind Temperature Parameters Near 1 au
نویسندگان
چکیده
منابع مشابه
Statistical validation of a solar wind propagation model from 1 to 10 AU
[1] A one-dimensional (1-D) numerical magnetohydrodynamic (MHD) code is applied to propagate the solar wind from 1 AU through 10 AU, i.e., beyond the heliocentric distance of Saturn’s orbit, in a non-rotating frame of reference. The time-varying boundary conditions at 1 AU are obtained from hourly solar wind data observed near the Earth. Although similar MHD simulations have been carried out an...
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 کاملCoronal radio sounding with Ulysses: solar wind electron density near 0.1 AU during the 1995 conjunction
Dual-frequency ranging measurements were recorded for a three-week interval during the 1995 solar conjunction of the Ulysses spacecraft. The unusual occultation geometry resulting from the high inclinationUlysses orbit enabled coronal radio sounding from the solar South Pole to the heliographic equator at solar ray path offsets near 0.1 AU. The electron column density along the line-of-sight be...
متن کاملSolar Wind: Global Properties
The most fundamental problem in solar system research is still unsolved: how can the Sun with a surface temperature of only 5800 K heat up its atmosphere to more than a million K? In fact, the solar atmosphere is so hot that not even the Sun’s enormous gravity can contain it. Part of it is continuously evaporating into interplanetary space: the SOLAR WIND. As a highly ionized magnetized plasma ...
متن کاملUbiquitous Statistical Acceleration in the Solar Wind
One of the more interesting observations by ACE is the ubiquitous presence of higher energy tails on the distribution functions of solar wind and pickup ions. The tails occur continuously in the slow solar wind, but less so in fast wind. Their presence is not correlated with the passage of shock waves. It is pointed out that statistical acceleration by transit-time damping of propagating magnit...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Astrophysical Journal Supplement Series
سال: 2018
ISSN: 1538-4365
DOI: 10.3847/1538-4365/aab71c