Astronomy and Astrophysics – Astrophysics
Scientific paper
2007-11-07
Mon.Not.Roy.Astron.Soc.384:L24,2008
Astronomy and Astrophysics
Astrophysics
5 pages, 3 figures, Accepted for publication in MNRAS Letters. The definitive version is available at http://www3.interscien
Scientific paper
10.1111/j.1745-3933.2007.00414.x
Understanding the thermal equilibrium (stability) curve may offer insights into the nature of the warm absorbers often found in active galactic nuclei. Its shape is determined by factors like the spectrum of the ionizing continuum and the chemical composition of the gas. We find that the stability curves obtained under the same set of the above mentioned physical factors, but using recently derived dielectronic recombination rates, give significantly different results, especially in the regions corresponding to warm absorbers, leading to different physical predictions. Using the current rates we find a larger probability of having thermally stable warm absorber at $10^5 \kel$ than previous predictions and also a greater possibility for its multiphase nature. the results obtained with the current dielectronic recombination rate coefficients are more reliable because the warm absorber models along the stability curve have computed coefficient values, whereas previous calculations relied on guessed averages for the same due to lack of available data.
Badnell Nigel R.
Chakravorty Susmita
Elvis Martin
Ferland Gary
Kembhavi Ajit K.
No associations
LandOfFree
Dielectronic recombination and stability of warm gas in AGN 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 Dielectronic recombination and stability of warm gas in AGN, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dielectronic recombination and stability of warm gas in AGN will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-502810