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Spring 2020: Week 02 ASTR/PHYS 5590: High Energy Astrophysics Week 2 1 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
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Week 2wik/courses/astr5590spring2020/... · 2020-01-14 · ASTR/PHYS 5590: High Energy Astrophysics Spring 2020: Week 02 Week 2!1 Lecture material, handouts, and HW posted to the

Jul 19, 2020

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Page 1: Week 2wik/courses/astr5590spring2020/... · 2020-01-14 · ASTR/PHYS 5590: High Energy Astrophysics Spring 2020: Week 02 Week 2!1 Lecture material, handouts, and HW posted to the

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

Week 2

!1

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

Page 2: Week 2wik/courses/astr5590spring2020/... · 2020-01-14 · ASTR/PHYS 5590: High Energy Astrophysics Spring 2020: Week 02 Week 2!1 Lecture material, handouts, and HW posted to the

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

“Swordy Plot”

particle flux of CRs at the Earth

!2

Fig. 15.1

Page 3: Week 2wik/courses/astr5590spring2020/... · 2020-01-14 · ASTR/PHYS 5590: High Energy Astrophysics Spring 2020: Week 02 Week 2!1 Lecture material, handouts, and HW posted to the

Spring 2020: Week 02ASTR/PHYS 5590: High Energy Astrophysics !3

Fig. 5.1

Fig. 5.2

Page 4: Week 2wik/courses/astr5590spring2020/... · 2020-01-14 · ASTR/PHYS 5590: High Energy Astrophysics Spring 2020: Week 02 Week 2!1 Lecture material, handouts, and HW posted to the

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

Relativistic Case: Ionization losses

!4

Fig. 5.3

Page 5: Week 2wik/courses/astr5590spring2020/... · 2020-01-14 · ASTR/PHYS 5590: High Energy Astrophysics Spring 2020: Week 02 Week 2!1 Lecture material, handouts, and HW posted to the

Spring 2020: Week 02ASTR/PHYS 5590: High Energy Astrophysics !5

Fig. 5.4

Non-rel.

Relativistic

Page 6: Week 2wik/courses/astr5590spring2020/... · 2020-01-14 · ASTR/PHYS 5590: High Energy Astrophysics Spring 2020: Week 02 Week 2!1 Lecture material, handouts, and HW posted to the

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

Bethe-Bloch Formula

!6

Fig. 5.5

Page 7: Week 2wik/courses/astr5590spring2020/... · 2020-01-14 · ASTR/PHYS 5590: High Energy Astrophysics Spring 2020: Week 02 Week 2!1 Lecture material, handouts, and HW posted to the

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

Radiation of an accelerated charge

!7

Fig. 6.1

Page 8: Week 2wik/courses/astr5590spring2020/... · 2020-01-14 · ASTR/PHYS 5590: High Energy Astrophysics Spring 2020: Week 02 Week 2!1 Lecture material, handouts, and HW posted to the

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

Relativistic Case: electron radiation losses

!8

Fig. 5.3

Page 9: Week 2wik/courses/astr5590spring2020/... · 2020-01-14 · ASTR/PHYS 5590: High Energy Astrophysics Spring 2020: Week 02 Week 2!1 Lecture material, handouts, and HW posted to the

Spring 2020: Week 02ASTR/PHYS 5590: High Energy Astrophysics !9

Page 10: Week 2wik/courses/astr5590spring2020/... · 2020-01-14 · ASTR/PHYS 5590: High Energy Astrophysics Spring 2020: Week 02 Week 2!1 Lecture material, handouts, and HW posted to the

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

Page 11: Week 2wik/courses/astr5590spring2020/... · 2020-01-14 · ASTR/PHYS 5590: High Energy Astrophysics Spring 2020: Week 02 Week 2!1 Lecture material, handouts, and HW posted to the

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

Bremsstrahlung emissivity from a thermal distribution

of electrons

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