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We investigate the effect of slow expansion on a magnetosheath plasma and low-frequency waves using a two-dimensional hybrid expanding box simulation. We start our simulation with a homogeneous high beta plasma, which is marginally stable to the mirror and proton cyclotron instabilities. The expansion is imposed as an external force: the physical size of(More)
We present a statistical analysis of 5 years of Cluster mission data in the magnetosheath. Our primary focus is to exhibit the spatial distribution of mirror mode events. The automatized detection is based on Minimum Variance Analysis and the amplitude of events. The results are displayed in the GIPM reference frame to enable comparison with a previous(More)
We analyze Wind, ACE and STEREO (A and B) plasma and magnetic field data in the vicinity of the heliospheric current sheet (HCS) crossed by all spacecraft between 22:15 UT on March 31 and 01:25 UT on April 1, 2007; corresponding to its observation at ST-A and ST-B which were separated by over 1800 R E (or over 1200 R E across the Sun-Earth line). Although(More)
A number of modes of oscillations of particles and fields can exist in space plasmas. Since the early 1970s, space missions have observed noise-like plasma waves near the geomagnetic equator known as 'equatorial noise'. Several theories were suggested, but clear observational evidence supported by realistic modelling has not been provided. Here we report on(More)
Previous work has shown that solar wind suprathermal electrons can display a number of features in terms of their anisotropy. Of importance is the occurrence of counter-streaming electron patterns, i.e., with " beams " both parallel and anti-parallel to the local magnetic field, which is believed to shed light on the heliospheric magnetic field topology. In(More)
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