Contribution to the observation of the photospheric oscillations |
| |
| Authors: | E Fossat G Ricort |
| |
| Institution: | (1) Département d'Astrophysique de l'UER MST, Université de Nice, Parc Valrose, 06034, 128 Nice, Cedex, France |
| |
| Abstract: | Observations of the 300 s photospheric oscillation on large solar surfaces (up to 5 20 in diameter) using a sodium optical resonance cell seem to show that the power at long horizontal wavelengths is larger than previous results would indicate. In order to get more information about the spatial distribution of the energy, a new observational method has been perfected, which will allow us to obtain the spatiotemporal power spectrum.In some of our observations, a long-period oscillation (about 40 min) appears, with an amplitude comparable to that of the 300-s oscillation, and which seems to be correlated with the occurence of chromospheric flares. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
