Jasper S. Halekas, PhD
Professor
Society of Physics Students (SPS) Advisor
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Scientific Interests:
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Space plasma instrumentation, focusing on charged particle measurement techniques
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Solar wind origin, acceleration, and evolution from the Sun to the outer solar system
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Planetary magnetic fields and magnetospheres
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Atmospheric escape from terrestrial planets
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Composition and dynamics of planetary exospheres
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Moon-plasma interactions throughout the solar system
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Plasma wakes and sheaths
To Touch the Sun: The Parker Solar Probe
The solar wind is a supersonic flow of hot ionized gas - or plasma - from the Sun that streams throughout our solar system. The solar wind, first predicted by Eugene Parker in 1958 a few years before its direct detection, is the main driver of space weather at the Earth, including the aurora that you’ll hear about from our other speaker. Despite its fundamental importance, many unanswered questions remain about the solar wind. What energy sources heat the corona to millions of degrees and accelerate the solar wind to speeds of millions of miles per hour? What are the structure and dynamics of the Sun’s magnetic fields and how do these affect the release of the solar wind? What causes extreme solar wind events, such as coronal mass ejections? Since the first prediction and discovery of the solar wind, we have dreamed of sending a probe close to the Sun to answer these questions. The Parker Solar Probe is that mission. I will describe the mission’s conception and execution, and show a few of the exciting new scientific results from Parker Solar Probe.