Notes on Cosmic rays - wave interactions in plasmas

In summary: I would also be interested in knowing more about the growth rates of waves in general. Do they have a mathematical description analogous to the one we have for waves in a fluid, or is there another description?
  • #1
Pedro de la Torre
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Dear community,

I am Pedro de la Torre, now doing my PhD on Cosmic ray propagation.

Now, I have started to study reacceleration due to interactions of CR with plasma waves. My problem is that I do not find neither a good book or any kind of review with a detailed demonstration on the calculation of diffusion coefficients ( both in space and in momentum) and nor about growth rate of waves. For example I am reading "Skilling,J.,1975a.Mon.Not.R.astr.Soc.,172,557" but there are a lot of steps not explained in the middle and I get confused.

I know that there is not easy to find detailed calculations but It is impossible for me to find this on the web.
Could anyone recommend me any book, webpage, article or any kind of notes where I can find this material?

I would appreciate a lot any help!

Thank you, Pedro.
 
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  • #2
Pedro de la Torre said:
Now, I have started to study reacceleration due to interactions of CR with plasma waves. My problem is that I do not find neither a good book or any kind of review with a detailed demonstration on the calculation of diffusion coefficients ( both in space and in momentum) and nor about growth rate of waves. For example I am reading "Skilling,J.,1975a.Mon.Not.R.astr.Soc.,172,557" but there are a lot of steps not explained in the middle and I get confused.
I would expect that one would have discussed the subject with one's thesis advisor, who would in theory have some ideas for references.

What types of interactions is one studying, those near the origin, or interactions within our solar system?

It would help if one indicates what aspects are confusing.

I believe one is referring to Cosmic ray streaming. I - Effect of Alfven waves on particles
http://adsabs.harvard.edu/full/1975MNRAS.172..557S
and there are
http://adsabs.harvard.edu/full/1975MNRAS.173..245S
http://adsabs.harvard.edu/full/1975MNRAS.173..255S

More recently, but not sure if this is relevant to one's interests:

http://adsabs.harvard.edu/full/1994A&A...286..983M

http://adsabs.harvard.edu/full/2006ASPC..359...77F

Cosmic ray acceleration
https://www.sciencedirect.com/science/article/pii/S0927650512001272
Abstract

This review describes the basic theory of cosmic ray acceleration by shocks including the plasma instabilities confining cosmic rays near the shock, the effect of the magnetic field orientation, the maximum cosmic ray energy and the shape of the cosmic ray spectrum. Attention is directed mainly towards Galactic cosmic rays accelerated by supernova remnants.
 
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  • #3
Thank you for the fast answer.

To be concrete, what I would like to find is a more detailed derivation of eq. 4 of Cosmic ray acceleration (https://ac.els-cdn.com/S09276505120...t=1549272499_454664f9ab449748e57ba10ee9c80f18) and of eq. 2 and 3 of Cosmic ray streaming. I - Effect of Alfven waves on particles (http://adsabs.harvard.edu/full/1975MNRAS.172..557S).

I know that it is difficult to find something like this, but not even in the references of the articles I found these details.
 

1. What are cosmic rays?

Cosmic rays are high-energy particles that originate from outside of our solar system. They can be protons, electrons, or atomic nuclei and are constantly bombarding the Earth from all directions.

2. How do cosmic rays interact with plasmas?

Cosmic rays can interact with plasmas in a variety of ways, including ionization, excitation, and heating. When a cosmic ray particle collides with a plasma particle, it can transfer energy and momentum, causing changes in the plasma's behavior.

3. What is the role of wave interactions in cosmic ray propagation?

Wave interactions play a crucial role in the propagation of cosmic rays through plasmas. As cosmic rays travel through a plasma, they can excite plasma waves, which can in turn scatter the cosmic rays and affect their trajectories.

4. How do cosmic ray - plasma interactions impact space weather?

Cosmic ray - plasma interactions can have a significant impact on space weather. For example, when a large solar flare occurs, it can produce a burst of cosmic rays that can affect satellite communications and even pose a radiation risk to astronauts.

5. What are some current research efforts focused on cosmic ray - plasma interactions?

There are many ongoing research efforts focused on understanding the complex interactions between cosmic rays and plasmas. Some current research topics include studying the effects of cosmic rays on the Earth's atmosphere, investigating the role of plasma waves in cosmic ray acceleration, and developing models to predict space weather events caused by cosmic ray - plasma interactions.

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