July 29th, 2019 - CIB Lensing: Finding the Bias for Theory vs. Field + Bias * Halo (All Shells)
Jump to navigation
Jump to search
In this post, I am attaching plots that compare the theory kappa power spectrum to linear prescription [math]\displaystyle{ C_{\ell}^{\text{theory}} \approx C_{\ell}^{\text{field}} + Bias * C_{\ell}^{\text{halo}} }[/math] halo power spectrum for each kappa shell as a function of [math]\displaystyle{ \ell }[/math] taking the bias factors as the ratios C_{\ell}^{\text{theory}} \approx C_{\ell}^{\text{halo}} (at high <\ell>) calculated in the previous post.
Shell # and Corresponding Comoving Distances for Kappa Shell 1 : 0 ~ 400 Mpcs (Source at 600) Shell 2 : 0 ~ 800 Mpcs (Source at 1000) Shell 3 : 0 ~ 1200 Mpcs (Source at 1400) Shell 4 : 0 ~ 1600 Mpcs (Source at 1800) Shell 5 : 0 ~ 2000 Mpcs (Source at 2200) Shell 6 : 0 ~ 2400 Mpcs (Source at 2600) Shell 7 : 0 ~ 2800 Mpcs (Source at 3000) Shell 8 : 0 ~ 3200 Mpcs (Source at 3400) Shell 9 : 0 ~ 3600 Mpcs (Source at 3800) Shell 10 : 0 ~ 4000 Mpcs (Source at 4200) Shell 11 : 0 ~ 4400 Mpcs (Source at 4600) Shell 12 : 0 ~ 4800 Mpcs (Source at 5000) Shell 13 : 0 ~ 5200 Mpcs (Source at 5400) Shell 14 : 0 ~ 5600 Mpcs (Source at 5800) Shell 15 : 0 ~ 6000 Mpcs (Source at 6200) Shell 16 : 0 ~ 6400 Mpcs (Source at 6600) Shell 17 : 0 ~ 6800 Mpcs (Source at 7000) Shell 18 : 0 ~ 7200 Mpcs (Source at 7400)
As mentioned in the previous post (https://mocks.cita.utoronto.ca/index.php/July_29th,_2019_-_CIB_Lensing:_Finding_the_Bias_Factor_(for_Power_Spectra):_Theory/Halo_(All_Shells)), the two curves in the first four shells do not match. For Shell 5 ~ Shell 13, the two curves match very well at low to mid- [math]\displaystyle{ \ell }[/math], deviating by 10 ~ 20 % at [math]\displaystyle{ \ell \lt 100 }[/math], [math]\displaystyle{ \ell \gt 3000 }[/math]. In shells that cover the most redshifts (comoving distances), the this deviation becomes larger (up to 50%) and the two curves show some discrepancy (around 10%) at [math]\displaystyle{ 100 \lt \ell \lt 3000 }[/math] as well. The bias factors for Shell 14 ~ 18 could be calculated more accurately by extrapolating the ratio (from the previous post) to higher [math]\displaystyle{ \ell }[/math] (presumably).
Shell # Increasing from Left to Right, Top to Bottom (See Distance in Legend)