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"Eruptivni procesi u Sunčevoj atmosferi" (predavač Bojan Vršnak)

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Event details

Event

Title:: "Eruptivni procesi u Sunčevoj atmosferi" (predavač Bojan Vršnak)
When:: 02.04.2009 18.00 - 19.00
Where:: Tehnički muzej - Zagreb
Category:: Lecture

Description

Eruptivni procesi u Sunčevoj atmosferi, tzv. koronini izbačaji i Sunčevi bljeskovi, dramatično utječu na stanje međuplanetarnog prostora te magnetosfere planeta. Od posebne je važnosti djelovanje na Zemlju i-bliski svemirski prostor, gdje su posljedice vidljive u snažnim geomagnetskim olujama, ionosferskim i termosferskim poremećajima, onesposobljavanju funkcija umjetnih satelita, itd. U predavanju će u kratkim crtama biti opisan povijesni razvoj istraživanja Sunčeve aktivnosti s naglaskom na najnovija dostignuća u istraživanju eruptivnih procesa u Sunčevoj atmosferi, te će biti objašnjeni fizikalni mehanizmi koji omogućuju izbacivanje desetaka milijardi tona Sunčeve plazme brzinama većim od 1000 km/s, zagrijavanje plazme na nekoliko desetaka milijuna stupnjeva, te stvaranje relativističkih čestičnih snopova.