Magnetoacoustic waves in a stratified magnetic atmosphere

Khomenko, E. and Collados, M. and Bellot Rubio, L.R. (2002) Magnetoacoustic waves in a stratified magnetic atmosphere. Il nuovo cimento C, 25 (5\6). pp. 615-621. ISSN 1826-9885

ncc8836.pdf - Published Version

Download (237kB) | Preview
Official URL:


Observed variations of magnetic field in sunspots comprise intrinsic oscillations contaminated by “false” oscillations due to time-dependent opacity effects. We present a preliminary model intended for the separation of these components. We develop a mathematical formalism based on the analytical solution of the MHD equations including gravity, inclination of the magnetic field and effects of non-adiabaticity. The theoretical results are compared with observations in the near infrared at 1.56 μm using TIP (Tenerife Infrared Polarimeter). It is shown that a part of the detected magnetic-field variations can be intrinsic magnetic-field oscillations caused by magnetoacoustic waves.

Item Type: Article
Additional Information: Paper presented at the International Meeting on THEMIS and the New Frontiers of Solar Atmosphere Dynamics, Rome, Italy, March 19-21, 2001.
Uncontrolled Keywords: Oscillations and waves; helioseismology ; Conference proceedings
Subjects: 500 Scienze naturali e Matematica > 530 Fisica > 538 Magnetismo
Depositing User: Marina Spanti
Date Deposited: 12 Mar 2020 15:02
Last Modified: 12 Mar 2020 15:02

Actions (login required)

View Item View Item