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Astrophysical Jets from accreting Black Holes

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II.2 Diffusive shock acceleration<br />

● In a uniform magnetic field a freely moving charged particle follows a<br />

helical trajectory. The particles pitch is defined as:<br />

= p⋅ B<br />

pB<br />

so its momenta are<br />

p para =p<br />

p perp =1− 2 0.5 p

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