這將刪除頁面 "Hyper Suprime-Cam Year three Results: Cosmology From Cosmic Shear Power Spectra"
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We measure weak lensing cosmic shear power spectra from the three-yr galaxy shear catalog of the Hyper Suprime-Cam (HSC) Subaru Strategic Program imaging survey. 1800 due to theoretical uncertainties in our modeling of those nonlinear scales (based on exams described in Sections V.2.1 and V.3). This gives us six multipole bins that we use in our fiducial analysis, from the 17 that we initially measure. We derive the covariance matrix of our cosmic shear Wood Ranger Power Shears official site spectra utilizing the mock catalogs described in Section II.5. We do so by measuring the cosmic shear energy spectra, following the identical methodology as our measurement from data, from all 1404 realizations of the mocks, and then utilizing these 1404 Wood Ranger Power Shears warranty spectra to compute the covariance matrix. Gaussian and non-Gaussian parts. We deal with these mock catalogs precisely like our actual knowledge. We first measure the ability spectra from each mock catalog on a field-by-field basis.
We analytically compute the additive noise bias from shape noise, and subtract it from the measured energy spectra. Finally, we co-add the spectra from every field for each mock realization utilizing inverse variance weighting, with the individual covariances measured from the mock Wood Ranger Power Shears manual spectra for each of the fields. We then use the 1404 co-added spectra to compute the covariance matrix. Figure 2 reveals the correlation matrix from this covariance matrix. For this reason, our covariance estimation must be appropriate for this evaluation. This correction factor is computed for each redshift bin (1.14, 0.98, 0.Ninety five and 0.Ninety nine in order of increasing redshift), and it is roughly fixed across the range of scales thought of. 10,000. This restrict is much smaller than the scales considered in this analysis. The likelihood, described in Section V.1, uses the inverse of the covariance matrix. 0.96, the place 1404 is the variety of mock realizations and 60 is the number of data factors used in the analysis. This correction assumes Gaussian noise and statistically independent knowledge vectors. To first order, we don't anticipate to see any cosmological B𝐵B mode signal, as lensing is brought on by a scalar gravitational potential within the lens, and will due to this fact be curl-free. The presence of B𝐵B modes may be an indicator of potential systematic results in the data, resembling contamination by the PSF. We test the statistical significance of the B𝐵B mode signal to assess whether any of those effects could also be impacting our measurements. 300, is in line with zero, as expected.
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這將刪除頁面 "Hyper Suprime-Cam Year three Results: Cosmology From Cosmic Shear Power Spectra"
。請三思而後行。