Fig. 2

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Dynamic spectra of 15 scintillating pulsars with LOFAR. The white patches were removed because of radio-frequency interference. The color scheme indicates the pulse S/N ranging from blue to yellow
, which is heavily modulated due to diffraction in the interstellar medium. The high-S/N “islands” are commonly referred to as scintles and provide information on the turbulent interstellar plasma, as described in the text.
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