Data from ISOIS's first two orbits on Parker Solar Probe (IMAGE)
Caption
During Parker Solar Probe's first two orbits, IS?IS detected many small energetic particle events, solar bursts during which the rates of particles streaming out of the sun increased rapidly. On IS?IS, the Epi-Lo instrument measures particles in the tens of thousands of electron-volts, while Epi-Hi measures particles with millions to hundreds of millions of electron-volts. (For reference, the electricity in your house is 120 volts.) Here, data from orbits 1 (left) and 2 (right) show the IS?IS particle count rates overlaid as color strips along the black line that represents the trajectory of Parker Solar Probe. The lower energy ("Lo") rates are on the inside of the track, while the higher energy ("Hi") rates run outside. Both the size and color correspond to the measured rates, such that large red bars indicate the biggest bursts, when the sun released the most particles in a short amount of time.
Credit
Image by Jamey Szalay and David McComas; Adapted with permission from D.J. McComas et al., Nature 575:7785 (2019)
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