منابع مشابه
A Discussion on Interstellar Pickup Ions
Although there is a lot known about the physics that dictates the movement of the planets and starts throughout the night sky, little is known about the medium which encompasses these heavenly bodies. Let us consider our own solar system as an example of this. The reason for the orbit of planets around the Sun has been well known for quite some time. In addition to this, the predictability of t...
متن کاملObservations of interstellar helium pickup ions in the inner heliosphere
[1] During the MESSENGER spacecraft’s interplanetary trajectory to Mercury, the Fast Imaging Plasma Spectrometer (FIPS) measured the first helium pickup ion distributions at a heliocentric distance (R) ranging between 0.3 and 0.7 AU. From several transits of MESSENGER through the interstellar helium gravitational focusing cone, we map the cone structure in the ecliptic at R = 0.3 AU and compare...
متن کاملStatistical acceleration of interstellar pickup ions in corotating interaction regions
Observations from the SWICS instrument on Ulysses reveal that there is little evidence for the acceleration of interstellar pick-up ions at the forward and reverse shocks which surround Co-rotating Interactions Regions (CIR's) in the solar wind. Rather, the pick-up ions exhibit strong acceleration in regions within the CIR where there are increased variations in the magnitude of the magnetic fi...
متن کاملInterstellar and Inner Source Pickup Ions Observed with Swics on Ulysses
Many species of pickup ions, both of interstellar origin and from an inner, distributed source have been discovered using data from the Solar Wind Ion Composition Spectrometer (SWICS) on Ulysses. Velocity distribution functions of these ions were measured for the first time over heliocentric distances between 1.35 and 5.4 AU, both at high and low latitudes, and in the disturbed slow solar wind ...
متن کاملPossible modification of the cooling index of interstellar helium pickup ions by electron impact ionization in the inner heliosphere
Interstellar neutrals penetrating into the inner heliosphere are ionized by photoionization, charge exchange with solar wind ions, and electron impact ionization. These processes comprise the first step in the evolution of interstellar pickup ion (PUI) distributions. Typically, PUI distributions have been described in terms of velocity distribution functions that cool adiabatically under solar ...
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ژورنال
عنوان ژورنال: Journal of Geophysical Research: Space Physics
سال: 2001
ISSN: 0148-0227
DOI: 10.1029/2000ja000075