{"673454":{"#nid":"673454","#data":{"type":"event","title":"PhD Defense by Aaron Stahl","body":[{"value":"\u003Cp\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cstrong\u003E\u003Cspan\u003EDate and Time\u003C\/span\u003E\u003C\/strong\u003E\u003Cspan\u003E:\u003C\/span\u003E\u0026nbsp;\u003C\/span\u003E\u003C\/span\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan\u003EFriday, March 29, 2024, at 3 PM\u003C\/span\u003E\u003C\/span\u003E\u003C\/span\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cstrong\u003E\u003Cspan\u003ELocation\u003C\/span\u003E\u003C\/strong\u003E\u003Cspan\u003E:\u003C\/span\u003E\u0026nbsp;\u003C\/span\u003E\u003C\/span\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan\u003EFord ES\u0026amp;T 1229.\u0026nbsp;\u003C\/span\u003E\u003C\/span\u003E\u003C\/span\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cstrong\u003E\u003Cspan\u003ETitle\u003C\/span\u003E\u003C\/strong\u003E\u003Cspan\u003E:\u003C\/span\u003E\u0026nbsp;\u003C\/span\u003E\u003C\/span\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan\u003EModeling Ganymede\u0027s Interaction with the Jovian Magnetosphere: Ionospheric Outflow and the Juno PJ34 Flyby\u003C\/span\u003E\u003C\/span\u003E\u003C\/span\u003E\u003C\/span\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cstrong\u003E\u003Cspan\u003EAbstract\u003C\/span\u003E\u003C\/strong\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan\u003E:\u003C\/span\u003E\u003C\/span\u003E\u003C\/span\u003E\u0026nbsp;\u003C\/span\u003E\u003C\/span\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan\u003EUsing a hybrid model (kinetic ions, fluid electrons), we provide a three-dimensional model of Ganymede\u2019s interaction with the Jovian magnetosphere and the moon\u2019s ionospheric outflow. We also provide context for plasma and magnetic field observations from Juno\u0027s PJ34 flyby of Ganymede on 07 June 2021. Using five model configurations that successively increase the complexity of Ganymede\u2019s atmosphere and ionosphere through the inclusion of additional particle species and ionization mechanisms, we examine the density and flow patterns of pick-up ions with small (H2+), intermediate (H2O+), and large (O2+) masses in Ganymede\u2019s interaction region. The results are validated by comparing the modeled magnetic field and ion densities against time series from Juno\u2019s magnetometer and plasma instruments. The major findings are: (a) Ganymede\u2019s internal dipole dominated the magnetic field signature observed inside the moon\u2019s magnetosphere, while plasma currents shaped the field perturbations within the \u201cwake\u201d region detected along the Jupiter-averted magnetopause. (b) Ganymede\u2019s pick-up tail leaves a subtle, but clearly discernible imprint in the magnetic field downstream of the moon. (c) Heavy pick-up ions dominate ionospheric outflow and form a tail with steep outer boundaries. (d) During the Juno flyby, the position of Ganymede\u2019s Jupiter-facing magnetopause varied in time due to Kelvin-Helmholtz waves traveling along the boundary layer. As such, the location of the Jupiter-facing magnetopause observed by Juno represents only a single snapshot of this time-dependent process. (e) Ionospheric hydrogen ions are partially generated outside of Ganymede\u2019s magnetopause, forming a dilute H2+\u0026nbsp;corona that surrounds the moon\u2019s magnetosphere. (f) Most H2O+\u0026nbsp;ions are produced at low latitudes where field lines are closed, resulting in a very dilute pick-up tail for this species.\u003C\/span\u003E\u003C\/span\u003E\u003C\/span\u003E\u003C\/span\u003E\u003C\/span\u003E\u003C\/span\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cstrong\u003E\u003Cspan\u003E\u003Cspan\u003ECommittee\u003C\/span\u003E\u003C\/span\u003E\u003C\/strong\u003E\u003Cspan\u003E\u003Cspan\u003E:\u003C\/span\u003E\u003C\/span\u003E\u0026nbsp;\u003C\/span\u003E\u003C\/span\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan\u003EDr. Sven Simon1,2\u0026nbsp;(\u003Cstrong\u003E\u003Cem\u003Eadvisor\u003C\/em\u003E\u003C\/strong\u003E), Dr. David Ballantyne\u003C\/span\u003E\u003C\/span\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan\u003E1\u003C\/span\u003E\u003C\/span\u003E\u003C\/span\u003E\u003Cspan\u003E\u003Cspan\u003E, Dr. A. Nepomuk Otte1, Dr. James Wray2, Dr. Lucas Liuzzo3\u003C\/span\u003E\u003C\/span\u003E\u003C\/span\u003E\u003C\/span\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan\u003E1 \u2002\u2002\u2002\u2002School of Physics, \u003Cem\u003EGeorgia Institute of Technology\u003C\/em\u003E\u003C\/span\u003E\u003C\/span\u003E\u003C\/span\u003E\u003C\/span\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan\u003E2 \u2002\u2002\u2002\u2002School of Earth and Atmospheric Sciences, \u003Cem\u003EGeorgia Institute of Technology\u003C\/em\u003E\u003C\/span\u003E\u003C\/span\u003E\u003C\/span\u003E\u003C\/span\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan\u003E2 \u2002\u2002\u2002\u2002Space Sciences Laboratory, \u003Cem\u003EUniversity of California, Berkely\u003C\/em\u003E\u003C\/span\u003E\u003C\/span\u003E\u003C\/span\u003E\u003C\/span\u003E\u003C\/p\u003E\r\n\r\n\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\r\n","summary":"","format":"limited_html"}],"field_subtitle":"","field_summary":[{"value":"\u003Cp\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan\u003E\u003Cspan\u003EModeling Ganymede\u0027s Interaction with the Jovian Magnetosphere: Ionospheric Outflow and the Juno PJ34 Flyby\u003C\/span\u003E\u003C\/span\u003E\u003C\/span\u003E\u003C\/span\u003E\u003C\/p\u003E\r\n","format":"limited_html"}],"field_summary_sentence":[{"value":"Modeling Ganymede\u0027s Interaction with the Jovian Magnetosphere: Ionospheric Outflow and the Juno PJ34 Flyby"}],"uid":"27707","created_gmt":"2024-03-11 15:21:15","changed_gmt":"2024-03-19 13:45:05","author":"Tatianna Richardson","boilerplate_text":"","field_publication":"","field_article_url":"","field_event_time":{"event_time_start":"2024-03-29T15:00:00-04:00","event_time_end":"2024-03-29T17:00:00-04:00","event_time_end_last":"2024-03-29T17:00:00-04:00","gmt_time_start":"2024-03-29 19:00:00","gmt_time_end":"2024-03-29 21:00:00","gmt_time_end_last":"2024-03-29 21:00:00","rrule":null,"timezone":"America\/New_York"},"location":"Ford ES\u0026T 1229","extras":[],"groups":[{"id":"221981","name":"Graduate Studies"}],"categories":[],"keywords":[{"id":"100811","name":"Phd Defense"}],"core_research_areas":[],"news_room_topics":[],"event_categories":[{"id":"1788","name":"Other\/Miscellaneous"}],"invited_audience":[{"id":"78771","name":"Public"}],"affiliations":[],"classification":[],"areas_of_expertise":[],"news_and_recent_appearances":[],"phone":[],"contact":[],"email":[],"slides":[],"orientation":[],"userdata":""}}}