2 papers
astro-ph1998
HST Observations of the QSO pair Q1026-0045A,B
Patrick Petitjean, Jean Surdej, Alain Smette +3
The spatial distribution of the Ly forest is studied using new HST data for the quasar pair Q~1026--0045 A and B at = 1.438 and 1.520 respectively. The angular separati…
astro-ph1997
Evolution of a hot primordial gas in the presence of an ionizing ultraviolet background: instabilities, bifurcations, and the formation of Lyman limit systems
Jan P. Muecket, Ronald E. Kates
The time evolution of thermal and thermo-reactive instabilities of primordial gas in the presence of ionizing UV radiation is studied. We obtain conditions (depending on density, t…