Graduate Coefficient correlation between 2 cosmological probes

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SUMMARY

The discussion centers on the correlation coefficient between two cosmological probes: a spectroscopic probe (A) and a photometric probe (B). The equation (13) is referenced to determine whether the correlation coefficient is closer to 0 or 1, depending on the dominance of the Poisson noise ##\mathcal{N}_{\ell}^{A}## versus the cosmological component ##b_A\,C_{\ell}^{DM}##. The author cites a document indicating that the cosmological part is significantly larger than the noise, suggesting a correlation coefficient near 1, though doubts remain regarding this conclusion.

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fab13
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I would like to assess the importance of spectroscopic Poisson noise compared to the cosmological contribution of Dark matter
Hello,

I have the demonstration below. A population represents the spectroscopic proble and B the photometric probe. I would like to know if, from the equation (13), the correlation coeffcient is closed to 0 or to 1 since I don't know if ##\mathcal{N}_{\ell}^{A}## Poisson noise of spectroscopic dominates or not the cosmological part ##b_A\,C_{\ell}^{DM}## with ##b_A## the cosmological bias of spectroscopic probe.

In this document, the authot states that cosmological part ##b_A\,C_{\ell}^{DM}## is very larger compared to ##\mathcal{N}_{\ell}^{A}## : this causes the correlation coefficient to be closed to 1 but I have doubts.

Any help is welcome

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I put in attachment the capture in PDF for more lisibility
 

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This is like your fourth thread on this.

If you aren't violating the PF rules on personal theories, you might want to try and make your point more clearly and concisely.
 

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