The physical conditions within dense cold clouds in cooling flows II

Details The physical conditions within dense cold clouds in cooling flows II The physical conditions within dense cold clouds in cooling flows II

2002-03-05

arxiv.org/abs/astro-ph/0203052v2

Mon.Not.Roy.Astron.Soc.333:876,2002

Astronomy and Astrophysics

Astrophysics

9 pages, 7 figures. Accepted for publication in MNRAS. Minor updates to refer to Puy et al 1999, and to tidy the references

Scientific paper

10.1046/j.1365-8711.2002.05470.x

This is a progress report on our numerical simulations of conditions in the cold cores of cooling flow condensations. The physical conditions in any non-equilibrium plasma are the result of a host of microphysical processes, many involving reactions that are research areas in themselves. We review the dominant physical processes in our previously published simulations, to clarify those issues that have caused confusion in the literature. We show that conditions in the core of an X-ray illuminated cloud are very different from those found in molecular clouds, largely because carbon remains substantially atomic and provides powerful cooling through its far infrared lines. We show how the results of the Opacity Project have had a major impact on our predictions, largely because photoionization cross sections of atoms and first ions are now calculated to be far larger than previously estimated. Finally we show that the predicted conditions are strongly affected by such complexities as microturbulence or the presence of small amounts of dust. Large masses of cold dense gas, in addition to the warmer molecular gas detected recently, could be present in cooling flows.

Affiliated with

Also associated with

No associations

Rating

The physical conditions within dense cold clouds in cooling flows II 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 The physical conditions within dense cold clouds in cooling flows II, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The physical conditions within dense cold clouds in cooling flows II will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-76188