Spring 2020: Week 02ASTR/PHYS 5590: High Energy Astrophysics

Week 2

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Lecture material, handouts, and HW posted to the website

Chapter 5: Ionization losses by energetic ions plowing through a neutral medium

Chapter 6: Radiation losses by energetic electrons getting deflected by ions in a plasma

Spring 2020: Week 02ASTR/PHYS 5590: High Energy Astrophysics

“Swordy Plot”

particle flux of CRs at the Earth

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Fig. 15.1

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Fig. 5.1

Fig. 5.2

Spring 2020: Week 02ASTR/PHYS 5590: High Energy Astrophysics

Relativistic Case: Ionization losses

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Fig. 5.3

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Fig. 5.4

Non-rel.

Relativistic

Spring 2020: Week 02ASTR/PHYS 5590: High Energy Astrophysics

Bethe-Bloch Formula

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Fig. 5.5

Spring 2020: Week 02ASTR/PHYS 5590: High Energy Astrophysics

Radiation of an accelerated charge

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Fig. 6.1

Spring 2020: Week 02ASTR/PHYS 5590: High Energy Astrophysics

Relativistic Case: electron radiation losses

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Fig. 5.3

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Spring 2020: Week 02ASTR/PHYS 5590: High Energy Astrophysics

Bremsstrahlung of a single electron, for a single impact parameter b

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Fig. 6.2

Spring 2020: Week 02ASTR/PHYS 5590: High Energy Astrophysics

Bremsstrahlung emissivity from a thermal distribution

of electrons

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