Stefan Ferreira
(North-West University)
31/07/2015, 11:00
SH-TH
Oral contribution
The time-dependent modulation of galactic cosmic rays in the heliosphere is studied over different polarity cycles by computing 2.5 GV proton intensities using a two-dimensional, time-dependent modulation model. By incorporating recent theoretical advances in the relevant transport parameters in the model we showed in previous work that this approach gave realistic computed intensities over a...
Prof.
Jacek Niemiec
(Institute of Nuclear Physics PAN, Krakow, Poland)
31/07/2015, 11:15
SH-TH
Oral contribution
The nearly circular band of energetic neutral atom (ENA) emission dominating the
field of view of the Interplanetary Boundary EXplorer satellite (IBEX), is most
commonly attributed to the effect of charge exchange of secondary pickup ions
(PUIs) gyrating about the magnetic field in the outer heliosheath and the
interstellar space beyond.
The main difficulty with this model is the problem...
Du Toit Strauss
(North-West University, South Africa)
31/07/2015, 11:30
SH-TH
Oral contribution
When the Voyager 1 spacecraft crossed the heliopause, energetic particle observations showed unexpectedly large anisotropies in the local interstellar medium. For high energy galactic cosmic rays, the anisotropy is such that a deficiency of particles near pitch-angles of 90 degrees was recorded. For low energy anomalous cosmic rays, the anisotropy is completely different; an enhancement near...
Dr
Xiaocheng Guo
(University of Alabama in Huntsville)
31/07/2015, 11:45
SH-TH
Oral contribution
We investigate the possibility of the modulation of galactic cosmic ray (GCR) in the outer heliosheath (OHS) by means of the numerical simulations. The transport of GCR in the heliosphere is simulated by solving the Parker transport equation through a stochastic method, and the plasma background of the heliosphere is obtained from a global MHD-neutral simulation. The results confirm that no...
Vladimir Florinski
31/07/2015, 12:00
SH-TH
Oral contribution
In August of 2012 the Voyager 1 space probe has left the solar-wind bubble of ionized gas we call the heliosphere and entered the denser and colder environment of the interstellar cloud surrounding the solar system. Energetic charged particles underwent dramatic changes past the heliopause: the heliospheric ions disappeared completely, while the galactic cosmic rays were for the first time...
Mr
Adrian Vogt
(University of Kiel)
31/07/2015, 12:15
SH-TH
Oral contribution
Although the main processes are well known, the transport of charged particles in the inner heliosphere is still under investigation. Because of a GPU-accelerated algorithm to solve Parker's transport equation by means of stochastic differential equations (SDEs), our newly developed code offers the possibility to perform extensive parameter studies. In this study we use counting rates of...
