The Value of $H_0$ from Gaussian Processes
| Autor: | Busti, Vinicius C., Clarkson, Chris, Seikel, Marina |
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| Rok vydání: | 2014 |
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| Druh dokumentu: | Working Paper |
| Popis: | A new non-parametric method based on Gaussian Processes was proposed recently to measure the Hubble constant $H_0$. The freedom in this approach comes in the chosen covariance function, which determines how smooth the process is and how nearby points are correlated. We perform coverage tests with a thousand mock samples within the LCDM model in order to determine what covariance function provides the least biased results. The function Matern(5/2) is the best with sligthly higher errors than other covariance functions, although much more stable when compared to standard parametric analyses. Comment: 3 pages, proceedings from the IAUS306 conference |
| Databáze: | arXiv |
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