Solar radiation

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Sources of solar radiation

Solar radiation can be split into two varieties: electromagnetic and ionized particles.

  • The electromagnetic spectrum is radiated from a near-"Black Body" at 5800K.
  • High energy ions can be excited by solar wind interactions and/or emitted directly from solar flares or subsequent Coronal Mass Ejections. A solar proton event (SPE) occurs when the intensity of this radiation temporarily spikes after a solar flare or CME. In an SPE, the intensity of particulate radiation can increase by up to 5 orders of magnitude over the normal level, with radiation returning to the baseline level after several days.[1] 


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  1. Schimmerling W. (2011, Feb 5). The Space Radiation Environment: An Introduction. https://three.jsc.nasa.gov/concepts/SpaceRadiationEnviron.pdf