text: The de Jager model for this phenomenon overpredicts it in OB-type stars.
full_question: The de Jager model for this phenomenon overpredicts it in OB-type stars. That "weak" problem with this phenomenon cannot be explained by its namesake clumping or by the broadening of P Cygni profiles, which is indicative of line-driving processes causing this phenomenon. Some luminous blue variables, like Eta Carinae, exhibit bubbles named after this phenomenon. Other stars that exhibit this phenomenon lose their nitrogen lines as it occurs, resulting in a transition from WN to WC classification; those are Wolf-Rayet stars. Near us, it manifests as Parker spirals and its interaction with the magnetosphere allows aurorae to be visible on the Earth's surface. For 10 points, name this phenomenon in which charged particles are ejected from a star's surface.
first_sentence: The de Jager model for this phenomenon overpredicts it in OB-type stars.
raw_answer: stellar wind [or solar wind]