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    Solar energy intensity

    Date: 07 Jun 2011
    Satellite: PROBA-2
    Depicts: Solar irradiance during a solar flare
    Copyright: ROB

    PROBA-2's LYRA (Large Yield Radiometer) instrument measures the energy intensity of the Sun across four separate ultraviolet bands every 50 milliseconds, observing a spike in signal across its two short-wavelength bands (shown here in blue and black) due to the 7 June 2011 solar flare. The flare caused a decrease in the SWAP average intensity from PROBA-2's other Sun-watching instrument, shown here in purple.


    Last Update: 21 Jun 2011

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