10.07.2015 Views

Today in Astronomy 142 - Astro Pas Rochester

Today in Astronomy 142 - Astro Pas Rochester

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Sunspots: solar magnetismFigure: Chaisson and McMillan, <strong><strong>Astro</strong>nomy</strong> <strong>Today</strong>! Sunspots appeardark becausethey’re slightlycooler than the restof the solar surface.! Zeeman effectmeasurementsshow that they arealso maxima ofmagnetic field.! Associated withother activity (e.g.prom<strong>in</strong>ences)<strong><strong>Astro</strong>nomy</strong> <strong>142</strong> 18

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