Publication Date
1997
Abstract
In gravitational instability models, \lya absorption arises from a continuous fluctuating medium, so that spectra provide a non-linear one-dimensional ``map'' of the underlying density field. We characterise this continuous absorption using statistical measures applied to the distribution of absorbed flux. We describe two simple members of a family of statistics which we apply to simulated spectra in order to show their sensitivity as probes of cosmological parameters (H$_{0}$, $\Omega$, the initial power spectrum of matter fluctuations) and the physical state of the IGM. We make use of SPH simulation results to test the flux statistics, as well as presenting a preliminary application to Keck HIRES data.
Recommended Citation
Croft, R AC; Weinberg, DH; Hernquist, L; and Katz, N, "Characterization of Lyman Alpha Spectra and Predictions of Structure Formation Models: A Flux Statistics Approach" (1997). Astronomy Department Faculty Publication Series. 1002.
Retrieved from https://scholarworks.umass.edu/astro_faculty_pubs/1002
Comments
This is the pre-published version harvested from ArXiv.