Astrophysical: Helioseismology

  • Publication
    On the Spatial Dependence of Low-Degree Solar p-Mode Frequency Shifts from Full-Disk and Resolved-Sun Observations
    We have analyzed low angular degree (low-l) solar p-mode frequency shifts extracted from two types of observations, both made by instruments on board the ESA...
  • Publication
    On the Variation of the Peak Asymmetry of Low-l Solar p Modes
    The resonant peaks of solar p modes show small amounts of asymmetry in frequency. Here, we use five independent sets of contemporaneous data, collected over a ~...
  • Publication
    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)...
  • Publication
    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...
  • Publication
    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...
  • Publication
    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)...
  • Publication
    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...
  • Publication
    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...
  • Publication
    Revisiting the hypothesis of purely stochastic excitation of global p modes in the Sun
    Context. In solar-like oscillators, acoustic waves are excited by turbulent motion in the convective envelope and propagate inward, generating a variety of...