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foregroundstelecon20220714 [2022/07/14 09:58] – created hananyforegroundstelecon20220714 [2022/07/21 09:47] (current) hanany
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-====== Telecon Notes July 7, 2022 ======+====== Telecon Notes July 14, 2022 ======
  
 [[https://spa-zzz-01.spa.umn.edu/!ipsig/foregrounds|Link to main foregrounds telecons page]] \\ [[https://spa-zzz-01.spa.umn.edu/!ipsig/foregrounds|Link to main foregrounds telecons page]] \\
 [[https://spa-zzz-01.spa.umn.edu/!ipsig/logbook|Link to logbook]] [[https://spa-zzz-01.spa.umn.edu/!ipsig/logbook|Link to logbook]]
  
-Attendance:  Shaul,\\+Attendance:  Shaul, Sebastian, Mathieu, Kris \\
  
 Regrets:  Regrets: 
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 === Agenda + Notes: === === Agenda + Notes: ===
  
 +  * MR didn't have a chance to make changes for his Figures. Delayed for next week. 
 +  * Discussed a bunch of Sebastian's Figures
 +  * Waiting for Mathew to fix the likelihood and his plots - Shaul will write to them again. 
 +
 +e-mail from HK
 +
 +Hi Shaul and all,
 +
 +I'm looking at the equations in the appendix now, and I'm not entirely 
 +sure what you're referring to as "not consistent". Equation A4 defines 
 +the Gaussian likeliood, and in this case the free parameters are r and 
 +A_l. Equations A2 and A3 defines the GBR estimator, and in this case the 
 +free parameters are (at this stage) C_l's, rather than r and A_l. Are 
 +you proposing that we should replace C_l in Eq. A2-A3 with the full 
 +expression? If so, it's important to note that we are *not* using the 
 +(r,A_l) model in the GBR approach, but rather have a grid of models with 
 +different r's (and A_l = 1) computed directly with CAMB, so the C_l 
 +models aren't the same. In effect, for the Gaussian likelihood analysis 
 +one assumes that the BB spectra scale linearly with r all the way from 
 +r=1 to 0, and that's obviously not exactly true. That's why we use preer 
 +to use a precomputed CAMB grid instead, in which case the non-linearity 
 +is taken into account.
 +
 +If this is what you're referring to, I think it's better to describe 
 +this in words, than actually change the equations. Alternatively, it 
 +might be cleaner to just replace the big C_l model in Eq. A4 with a 
 +general C_l(r,A_l), and then specify in the text that these differ 
 +between the two approaches.
 +
 +Whatever you prefer, I'm leaving for vacation this afternoon, so Mathew 
 +should implement this when he gets back. Alternatively, I can clarify 
 +this in early August. Irrespective of when it happens, I don't really 
 +think that this is a major hold-up to finishing the paper. Rather, what 
 +is needed, is *one* person getting full editorial rights for the entire 
 +paper, and simply writes it up end-to-end. That can probably be done in 
 +a matter of two or three days with continuous writing time. Having 
 +individual people write separate section will take very long to 
 +converge, I think...
 +
 +Thanks, and have a nice summer :-)
foregroundstelecon20220714.1657810689.txt.gz · Last modified: 2022/07/14 09:58 by hanany