Helioseismology with Solar Orbiter: Science Objectives, Observational Strategies and Requirements

Solar Orbiter will offer novel perspectives for helioseismology. The most interesting aspects of the mission reside in the unique vantage points from which the Sun will be viewed. Not only will out-of-the-ecliptic observations enable us to reach higher heliographic latitudes into the solar convection zone but Solar Orbiter in combination with Earth-side observations will also mean the advent of stereoscopic helioseismology. The science objectives, observational strategies and science requirements are discussed.