Helioseismic evidence of two solar granulation timescales

Bibcode
2005A&A...443L..11V
DOI
10.1051/0004-6361:200500191
Vázquez Ramió, H.; Régulo, C.; Roca Cortés, T.
Bibliographical reference

Astronomy and Astrophysics, Volume 443, Issue 1, November III 2005, pp.L11-L14

Advertised on:
11
2005
Journal
Astronomy and Astrophysics
Number of authors
3
IAC number of authors
3
Citations
10
Refereed citations
10
Description
The signature of two different scales of solar granulation in the power spectrum of disk integrated irradiance time series is presented. The fitted timescales for granulation (τGR1≈ 237~s and τGR2≈ 62~s) are in good agreement with the characteristic lifetimes derived from recent image time series of the Sun's surface (Del Moro 2004); and probably linked to magnetic chromospheric structures such as bright points (Harvey et al. 1993).
Type
Refereed
Helioseismology

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