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Forward-Modeling Helioseismic Signatures

POSTER

Abstract

Understanding the internal workings of the Sun has always been a difficult task--as the solar interior will most likely be forever inaccessible to direct observations. The discovery of turbulent oscillations of plasma on the solar surface, however, have offered us a new chance to take a look inside, using the same techniques in seismology that are used here on earth. This new field of helioseismology has since become one of the foundational pillars of solar astrophysics, bringing us a wealth of insights into the internal workings of global plasma flows that drive the dynamo generating the solar magnetic field. Many mysteries still remain, however, as noise and systematic errors dominate the helioseismic signals--leading to inconsistent interpretations of observational data. In order to address these uncertainties, we have developed a new 3D global acoustic model of the Sun (GALE--Global Acoustic Linearized Euler), which can be used as a computational test-bed to forward-model local and global techniques in helioseismology across various 3D structures of velocity flows and noise models. This model will help set a baseline that will lead to better interpretations of the signals we observe on the Sun.

Authors

  • Andrey Stejko

    New Jersey Inst of Tech

  • Blakesley Burkhart

    Massachusetts Institute of Technology, None, University of Colorado Boulder, Virginia Tech, MIT Haystack Observatory, University of Alabama, Johns Hopkins University, University of Maryland College Park, University of Illinois Urbana Champaign, Rutgers University, Institute of Solar-Terrestrial Physics, New Jersey Inst of Tech, Flatiron Institute, Rutgers, The State University of New Jersey, University of KwaZulu-Natal, Los Alamos National Laboratory, The College of William \& Mary, Cornell University, Cornell University, California Institute of Technology, California Institute of Technology, Max Planck Institute for Gravitational Physics (Albert Einstein Institute), New Jersey Institute of Technology, New Jersey Institute of Tech, University of Applied Sciences and Arts Northwestern Switzerland, Princeton University, University of Pittsburgh, DEVCOM Army Research Lab, University of Louisville, University of Cape Town, Rutgers University/Flatiron Institute, Center for Astrophysics, Harvard & Smithsonian, Research School of Astronomy and Astrophysics, The Australian National University, Rutgers, the State University of New Jersey

  • Blakesley Burkhart

    Massachusetts Institute of Technology, None, University of Colorado Boulder, Virginia Tech, MIT Haystack Observatory, University of Alabama, Johns Hopkins University, University of Maryland College Park, University of Illinois Urbana Champaign, Rutgers University, Institute of Solar-Terrestrial Physics, New Jersey Inst of Tech, Flatiron Institute, Rutgers, The State University of New Jersey, University of KwaZulu-Natal, Los Alamos National Laboratory, The College of William \& Mary, Cornell University, Cornell University, California Institute of Technology, California Institute of Technology, Max Planck Institute for Gravitational Physics (Albert Einstein Institute), New Jersey Institute of Technology, New Jersey Institute of Tech, University of Applied Sciences and Arts Northwestern Switzerland, Princeton University, University of Pittsburgh, DEVCOM Army Research Lab, University of Louisville, University of Cape Town, Rutgers University/Flatiron Institute, Center for Astrophysics, Harvard & Smithsonian, Research School of Astronomy and Astrophysics, The Australian National University, Rutgers, the State University of New Jersey