1.
Astrophys J
; 529(2): L73-L76, 2000 Feb 01.
Article
in English
| MEDLINE
| ID: mdl-10622758
ABSTRACT
Recent numerical simulations have lead to a paradigm shift in our understanding of the intergalactic medium and the loss of a physical justification for Voigt profile fitting of the Lyalpha forest. Many individual lines seen in simulated spectra have significant departures from the Voigt profile, yet could be well fitted by a blend of two or more such lines. We discuss the expected effect on the line profiles due to ongoing gravitational structure formation and Hubble expansion. We develop a method to detect departures from Voigt profiles of the absorption lines in a statistical way and apply this method to simulated Lyalpha forest spectra, confirming that the profiles seen do statistically differ from Voigt profiles.
2.
Phys Rev B Condens Matter
; 40(8): 5761-5770, 1989 Sep 15.
Article
in English
| MEDLINE
| ID: mdl-9992616