tag:blogger.com,1999:blog-4816364298830193141.post5075940003417278677..comments2023-09-23T06:39:45.134-07:00Comments on The Astronomist: Magnetic Fields in CosmologyThe Astronomisthttp://www.blogger.com/profile/17959972471002184287noreply@blogger.comBlogger3125tag:blogger.com,1999:blog-4816364298830193141.post-1999280201244639402010-09-14T10:33:20.232-07:002010-09-14T10:33:20.232-07:00Thanks for responding, I really enjoyed your write...Thanks for responding, I really enjoyed your write up but I wish I could read the article itself. It would be really nice if some 'anonymous' poster were to provide a link to the full text pdf using a one-click file hosting service (like, ifile.it).superkuhhttp://superkuh.ath.cx/noreply@blogger.comtag:blogger.com,1999:blog-4816364298830193141.post-65416002371165458592010-09-14T00:13:26.060-07:002010-09-14T00:13:26.060-07:00Quite right. The highest density molecular clouds ...Quite right. The highest density molecular clouds don't get above 10^7 particles per cubic centimeter and less than 10^2 particles per cubic centimeter is appropriate for much of the interstellar medium. So this value may be motivated by their work on fusion studies here on Earth.<br /><br />I tried to recalculate equation 9, but found interestingly that for my definition of Alfven speed the number density dropped out! I am at a loss. I may email the authors. Also as you point out at distant cosmological times the density scales at (1+z)^3 and thus the high density value used would be appropriate a higher redshift.The Astronomisthttps://www.blogger.com/profile/17959972471002184287noreply@blogger.comtag:blogger.com,1999:blog-4816364298830193141.post-48548612079667744852010-09-13T21:56:07.518-07:002010-09-13T21:56:07.518-07:00The model starts with 10 billion particle per cubi...The model starts with 10 billion particle per cubic centimeter? Is this really a normal value? I understand that this is back in cosmological time before a lot of expansion but it's still incredibly dense for interstellar or intergalactic space!<br /><br />I can only compare it to what I know about typical particle densities of plasma clouds within the solar system and those are on the order of 0.01 to 100 particles per cubic centimeter.superkuhhttp://superkuh.ath.cx/noreply@blogger.com