School of Physics and Astronomy

Astronomy Unit Seminar - Solar magnetic variability: From minutes to millennia

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7 December 2018

Time: 2:30 - 4:30pm
Speaker: Matthew Owens
Venue: G. O. Jones Building, Room 610

Knowledge of long-term solar variability underpins understanding of the solar dynamo and quantification of potential climate and space weather implications. Prior to direct spacecraft measurements of the heliospheric magnetic field (HMF) and solar wind, accurate annual reconstructions are possible using geomagnetic and sunspot records. On longer timescales, information about the HMF can be extracted from cosmogenic radionuclide records, particularly 14C in ancient trees and 10Be in ice sheets. I'll discuss these proxies and what they reveal about the HMF and solar wind, both in terms of space climate and space weather.