SAIP2016

Analyses of heliospheric magnetic field data as input for ab initio modulation models

6 Jul 2016, 11:50

20m

5B (Kramer Law building)

Oral Presentation Track D2 - Space Science Space Science

Speaker

Prof. Renier Burger (North-West University)

Level for award<br>&nbsp;(Hons, MSc, <br> &nbsp; PhD, N/A)?

N/A

Apply to be<br> considered for a student <br> &nbsp; award (Yes / No)?

No

Abstract content <br> &nbsp; (Max 300 words)<br><a href="http://events.saip.org.za/getFile.py/access?resId=0&materialId=0&confId=34" target="_blank">Formatting &<br>Special chars</a>

Various approaches can be followed to calculate the intensity of galactic cosmic rays throughout the heliosphere. In the ab initio approach, turbulence quantities calculated from magnetic field data, obtained by various spacecraft, are used as input for a turbulence transport model. In turn, output from the latter model is used as input for the diffusion tensor of the cosmic-ray transport equation. I will discuss the structure of the turbulence that we believe characterizes the turbulent solar wind. I will then show how spacecraft data support a composite slab and two-dimensional structure, highlighting the difficulties and uncertainties that arise when we have no other option than to use data obtained by a single spacecraft.

Would you like to <br> submit a short paper <br> for the Conference <br> Proceedings (Yes / No)?

No

Please indicate whether<br>this abstract may be<br>published online<br>(Yes / No)

Yes