Astrofísicas: Heliosismología

  • Publicación
    p-mode power variation with solar atmosphere as observed in the Na D1 and K spectral lines
    In this work we investigate p-mode power variation with solar atmosphere. To this aim, we use THÉMIS observations of the Na D1 (λ5896 Å) and K (λ7699 Å)...
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    Performance of solar far-side active region neural detection
    Context. Far-side helioseismology is a technique used to infer the presence of active regions in the far hemisphere of the Sun based on the interpretation of...
  • Publicación
    Phase and Gain Relations between Low-Degree Intensity and Velocity Acoustic Modes during the Solar Activity Cycle
    Phase and gain relations between low-degree acoustic modes measured as intensity and velocity fluctuations have been carried out using various instruments and...
  • Publicación
    Phase difference between irradiance and velocity in low degree solar p-modes
    Phase differences between irradiance and full-disk velocity variations are derived for l = 0, 1, and 2 modes with order ranging from 11 up to 30 (1.8-4.3 mHz)...
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    Phase differences between luminosity and velocity measurements of the acoustic modes
    With two photometric stations (Tenerife and Baja California) the luminosity p-mode spectrum at different wavelengths has been identified. After a coherence...
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    Propagating Waves Transverse to the Magnetic Field in a Solar Prominence
    We report an unusual set of observations of waves in a large prominence pillar that consist of pulses propagating perpendicular to the prominence magnetic field...
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    Seismic Holography of the Solar Interior near the Maximum and Minimum of Solar Activity
    The base of the convection zone and the tachocline play a major role in the study of the dynamics of the Sun, especially in the solar dynamo. Here, we present a...
  • Publicación
    Sensitivity of helioseismic gravity modes to the dynamics of the solar core
    Context: The dynamics of the solar core cannot be properly constrained through the analysis of acoustic oscillation modes. Gravity modes (g modes) are necessary...
  • Publicación
    Signature of the solar cycle in the low degree p-modes using Mark-I
    High quality observations of the low degree p-modes exist for almost two complete solar cycles using the solar spectrophotometer Mark-I, located and operating...