Cosmic rays Definition and 67 Threads

http://www.sciencedaily.com/releases/2002/10/021031071017.htm ScienceDaily (Oct. 31, 2002) — WASHINGTON - Researchers have found that a portion of anomalous cosmic rays -- charged particles accelerated to enormous energies by the solar wind -- results from interactions with dust grains from a...

http://en.wikipedia.org/wiki/Cosmic_ray I have a little bit of trouble writing an essay that relies on background knowledge of galactic cosmic rays. I found in textbooks solid writing about the history of discovery and composition, etc. I can not find simple exemplary nuclear reactions...

http://arxiv.org/PS_cache/arxiv/pdf/0804/0804.1938v1.pdf

Are cosmic rays electromagnetic rays coming down from outer space? I've also read they are actually 90 percent protons, but I'm not sure what they are now. Thanks in advance.

Our atmosphere? Our atmosphere protect us from the cosmic rays what it consist of(the cosmic rays and the atmosphere)? How much is its power? How it (the atmosphere) stop these rays? What happened in high level of the atmosphere to stop it? What are the best gases (in the atmosphere) that...

The Danish scientist Henrik Svensmark has been scorn for several years now because of his alternative explanation of how Earth's temperature varies. His theory states this: High solar activity is a sign of a strong magnetic field from the sun -> Strong magnetic field from the sun will decrease...

Any suggestion about an introductory book on cosmic rays?

In case people hasn't seen the big news of the day (or technically, the big news of tomorrow when the issue of Science officially comes out), the Pierre Auger observatory collaboration has finally come out with its first major result. I am not in this field of study, but I am involve with it...

this isn't HW, it is more for myself, I don't want answers or links to arvix papers... I am stuck and I just need something to help me proceed... a 10^20 ev proton strikes the atmosphere a km up and creates a vertical down to the ground, the energy is evenly distributed along this vertical...

Could ultra high-energy cosmic rays be the result of matter-antimatter collision? What would be a unique antimatter-matter anihilation signature should say a 10 gram rock of antimatter were to collide into a meteor?

I read an article in this months Discover magazine that stated that cosmic rays are atoms of the elements from hydrogen up to iron traveling at close to the speed of light that originate from exploding stars. Can the mass of cosmic rays be calculated for the universe? Is it a constant? As some...

Are cosmic rays part of the EMS (Electromagnetic spectrum)? I have seen duagrams showing that cosmic rays are part of the EMS and I have heard conflicting reports that cosmic rays are not part of the EMS. I know cosmic rays are energetic nuclei and have mass so I tend to believe that they are...

http://space.com/scienceastronomy/AAS_cosmic_rays_050117.html Quote from article... "Cosmic rays are not actually rays, like light. They are instead subatomic particles, thought to be mostly protons, on of the fundamental units of matter. The highest-energy versions of them race across the...

In the 1969 edition of the World Book Encylopedia it shows that cosmic rays are considered part of the electromagnetic spectrum. In later editions the diagram doesn't show cosmic rays is part of the electromagnetic spectrum. In Capras famous book "The Tao of Physics, he also shows that cosmic...

http://arxiv.org/astro-ph/0408310 The Origin of Cosmic Rays - A 96-Year-Old Puzzle Solved? Arnon Dar Invited talks to be published in the proceedings of the 2004 La Thuile Workshop on Perspectives In High energy Physics, La Thuile, Aosta Valley, Italy, February 29-March 6, 2004...

Why is it that we think ultra high energy cosmic rays are emitted from supernovae.

This is an unusually important question. Could one determine the approximate age of a manufactured bismuth/magnesium/zinc composite somehow by the effects of UV, cosmic rays, or some other type of energetic particle acting on the material? For example, by microscopic examination or by some...