Astronomy and Astrophysics – Astrophysics
Scientific paper
May 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999a%26a...345..618m&link_type=abstract
Astronomy and Astrophysics, v.345, p.618-628 (1999)
Astronomy and Astrophysics
Astrophysics
21
Line: Profiles, Radiative Transfer, Methods: Data Analysis, Sun: Chromosphere, Sun: Filaments
Scientific paper
A fast inversion procedure which provides estimates of the temperature, electronic density, microturbulence, geometrical thickness and bulk velocity of chromospheric features, so-called ``clouds'', has been implemented. The procedure has been divided into two steps: 1) the construction of a large grid of models by means of a multi-level non-LTE transfer code, which solves in a fast and reliable way the radiative transfer problem of the formation of the Hα line inside an isolated, isothermal cloud laying above the photosphere, and 2) the implementation of searching, matching and interpolating algorithms which yield an inversion of the observed line profile in terms of the grid's computed profiles. The aforementioned 5 parameters, on which the profiles depend, can be reduced to 4 if one defines the so-called emission measure from the geometrical thickness and electronic density parameters. We show that this strategy yields excellent results when dealing with solar filaments. The main advantages of this approach are also discussed.
Heinzel Petr
Mein Nicole
Mein Pierre
Molowny-Horas Roberto
No associations
LandOfFree
A non-LTE inversion procedure for chromospheric cloud-like features 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 A non-LTE inversion procedure for chromospheric cloud-like features, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A non-LTE inversion procedure for chromospheric cloud-like features will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1119294