wmap likelihood code help

 Posts: 8
 Joined: September 15 2006
 Affiliation: University of Calgary
wmap likelihood code help
Hello i am trying to get the noise covariance matrix for the wmap 3yr data to proceed with some non parametric estimation of the power spectrum. Where can i find it if not here and if here where??

 Posts: 59
 Joined: September 25 2004
 Affiliation: ITA, University of Oslo
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Re: wmap likelihood code help
It's available on Lambda:preshanth jagannathan wrote:Hello i am trying to get the noise covariance matrix for the wmap 3yr data to proceed with some non parametric estimation of the power spectrum. Where can i find it if not here and if here where??
http://lambda.gsfc.nasa.gov/product/map ... yr_get.cfm
Or are you looking for something else..?

 Posts: 8
 Joined: September 15 2006
 Affiliation: University of Calgary
wmap likelihood code help
I was wondering how to get the final covariance of the composite map as provided by LAMBDA.... Sry i should have been more clear with the question. This is what i am looking for. Thank you very much for your immediate help.

 Posts: 59
 Joined: September 25 2004
 Affiliation: ITA, University of Oslo
 Contact:
Re: wmap likelihood code help
Actually, it's still not quite clear to me what you want. Is it the covariance matrix for the ILC map? If so, I think you're out of luck  this would be one ugly mess. (You cannot assume the noise is white any longer because of the 1 degree smoothing kernel applied to each submap.)preshanth jagannathan wrote:I was wondering how to get the final covariance of the composite map as provided by LAMBDA.... Sry i should have been more clear with the question. This is what i am looking for. Thank you very much for your immediate help.
If it's the composite *spectrum* covariance matrix you want  the one used by the WMAP team to generate the final spectrum from all DA vs DA combinations  then this is not publically available at the moment, but I'm sure Gary Hinshaw would be happy to post it on Lambda, if anybody asks for it. So if that's what you want, you should probably try sending him an email.

 Posts: 8
 Joined: September 15 2006
 Affiliation: University of Calgary
wmap likelihood code help
Hans thank you once again this was michael nolta's reply to my query. It might be of use to you too someday. So here it is.
You can extract the TT fisher matrix from the likelihood code on LAMBDA.
Look in WMAP_3yr_likelihood.F90, on line 328, for the variable "fisher".
You can extract the TT fisher matrix from the likelihood code on LAMBDA.
Look in WMAP_3yr_likelihood.F90, on line 328, for the variable "fisher".