Constraints on new radiation degrees of freedom?

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Syksy Rasanen
Posts: 119
Joined: March 02 2005
Affiliation: University of Helsinki

Constraints on new radiation degrees of freedom?

Post by Syksy Rasanen » August 26 2005

What contraints does one have from the CMB on additional radiation degrees of freedom (that interact only gravitationally)? Presumably this has been looked at, but I don't remember seeing a paper on the topic.

Anze Slosar
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Joined: September 24 2004
Affiliation: Brookhaven National Laboratory
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Constraints on new radiation degrees of freedom?

Post by Anze Slosar » August 26 2005

Do you mean something along the lines of this paper: astro-ph/0110636?

Syksy Rasanen
Posts: 119
Joined: March 02 2005
Affiliation: University of Helsinki

Constraints on new radiation degrees of freedom?

Post by Syksy Rasanen » August 26 2005

That's right, thanks. That (and astro-ph/0302337 and astro-ph/0303076 which refer to it) is just what I'm looking for.

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