Fig. 5.
Sketch of the geometry of the line of sight to the pulsar with respect to the Sun on 24 February 2019. The interaction region with excess electrons can be large in size while crossing the line of sight. The inset image shown at the top is the running difference EUV image of the Sun taken at 03:32 UT on 23 February 2019 by the SDO AIA telescope at 171 Å.
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