Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993a%26a...279..599n&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 279, no. 2, p. 599-609
Astronomy and Astrophysics
Astronomy
45
Astronomical Spectroscopy, Flow Velocity, Power Spectra, Solar Convection (Astronomy), Solar Granulation, Solar Spectra, Spectrograms, Turbulent Flow, Visible Spectrum, Absorption Spectra, Asymmetry, Cross Correlation, Line Spectra, Scaling Laws, Spectral Energy Distribution, Velocity Distribution
Scientific paper
This investigation is based on a series of spectrograms of extraordinary spatial resolution taken with the vacuum tower telescope (VTT) at Izana (Tenerife) in 1990. The quantitative analysis of these spectrograms reveals an asymmetrical character of the granular flow (non-Benard like convection). We suggest that a typical granule consists of a region of high intensity and low turbulence in its interior and a region of high turbulence and moderate intensity at its border. In other words, we surmise that reigons of enhanced turbulence outline the borders of granules. By means of power and coherence analyses we found two different scaling laws for the small scale range: both the velocity and intensity power as well as various cross-correlation functions change their behavior near log k approximately = 0.8.
Hammer Reiner
Hanslmeier Arnold
Komm Rudi
Mattig Wolfgang
Nesis Anastasios
No associations
LandOfFree
Dynamics of the solar granulation. 2: A quantitative approach 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 Dynamics of the solar granulation. 2: A quantitative approach, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dynamics of the solar granulation. 2: A quantitative approach will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-807468