Sparsity covariance: a source of uncertainty when estimating correlation functions with a discrete sample of observations in the sky
Cosmological observables rely heavily on summary statistics such as two-point correlation functions. In many practical cases (e.g. the weak-lensing cosmic shear), those correlation functions are estimated from a finite, discrete sample of measurements that are randomly distributed in the sky. The re...
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| Format: | Article |
| Language: | English |
| Published: |
Maynooth Academic Publishing
2025-05-01
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| Series: | The Open Journal of Astrophysics |
| Online Access: | https://doi.org/10.33232/001c.138039 |
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