Astrophysical: Solar chromosphere

  • Publication
    Full Stokes-vector Inversion of the Solar Mg II h and k Lines
    The polarization of the Mg II h and k resonance lines is the result of the joint action of scattering processes and the magnetic field–induced Hanle, Zeeman...
  • Publication
    High-frequency Wave Propagation Along a Spicule Observed by CLASP
    The Chromospheric Lyman-Alpha Spectro-Polarimeter (CLASP) sounding rocket experiment, launched in 2015 September, observed the hydrogen Lyα line (121.6 nm) in...
  • Talk
    Introduction of new postdocs. (1) Astroparticle In AMS-02: the way to combine astrophysics and particle physics; (2) Brown dwarf disks in the TW Hydrae association; (3) Understanding the solar chromosphere from polarization of hydrogen lines
    (1) Astroparticle In AMS-02: the way to combine astrophysics and particle physics. Jonathan Pochon AMS-02 is a typical particle detector designed for space...
  • News
    IRSOL and IAC scientists solve a complex paradox in solar physics
    In 1998, the journal Nature published a seminal letter concluding that the mysterious polarization signal that had been recently discovered in the light emitted...
  • Publication
    Limitations of the Ca II 8542 Å Line for the Determination of Magnetic Field Oscillations
    Chromospheric umbral oscillations produce periodic brightenings in the core of some spectral lines, known as umbral flashes. They are also accompanied by...
  • Publication
    Magnetic Field Information in the Near-ultraviolet Fe II Lines of the CLASP2 Space Experiment
    We investigate theoretically the circular polarization signals induced by the Zeeman effect in the Fe II lines of the 279.3-280.7 nm spectral range of the...
  • Publication
    Mapping the Longitudinal Magnetic Field in the Atmosphere of an Active Region Plage from the Inversion of the Near-ultraviolet CLASP2.1 Spectropolarimetric Data
    We apply the HanleRT Tenerife Inversion Code to the spectropolarimetric observations obtained by the Chromospheric Layer Spectropolarimeter. This suborbital...
  • Publication
    Multiline Stokes Synthesis of Ellerman Bombs: Obtaining Seamless Information from Photosphere to Chromosphere
    Magnetic reconnection in the lower atmosphere is a critical process in determining the chromospheric dynamics, such as Ellerman bombs and UV bursts. Because the...
  • Talk
    Mysteries of the magnetic Sun
    The Sun presents us with many unsolved mysteries. In this talk I discuss three of them that have intrigued me for the last 50 years. Solar flares are the most...