Astronomy and Astrophysics – Astrophysics
Scientific paper
1997-01-22
Astronomy and Astrophysics
Astrophysics
Contribution to proceedings of the 18th Texas Symposium on Relativistic Astrophysics (eds A. Olinto, J. Frieman and D. Schramm
Scientific paper
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.
Croft Rupert A. C.
Hernquist Lars
Katz Neal
Weinberg David H.
No associations
LandOfFree
Characterization of Lyman Alpha Spectra and Predictions of Structure Formation Models: A Flux Statistics Approach does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Characterization of Lyman Alpha Spectra and Predictions of Structure Formation Models: A Flux Statistics Approach, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Characterization of Lyman Alpha Spectra and Predictions of Structure Formation Models: A Flux Statistics Approach will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-598961