This figure illustrates the evolution of a Parker spiral, that is, the interplanetary magnetic field (IMF)...

 

Transcribed Image Text:

This figure illustrates the evolution of a Parker spiral, that is, the interplanetary magnetic field (IMF) line under the assumption that the magnetic field is "frozen-in" to the solar wind, which has a constant speed v₁. How does the picture change if we consider a slower solar wind speed v₂ = v₁/2? Draw the corresponding IMF line to the figure and explain why it looks like it does. Sun This figure illustrates the evolution of a Parker spiral, that is, the interplanetary magnetic field (IMF) line under the assumption that the magnetic field is "frozen-in" to the solar wind, which has a constant speed v₁. How does the picture change if we consider a slower solar wind speed v₂ = v₁/2? Draw the corresponding IMF line to the figure and explain why it looks like it does. Sun