ASTR/PHYS 5590: High Energy Astrophysics Spring 2020: Week 12

Week 12

!1

Discuss Changes to Syllabus

Only 1 Month Remaining to complete Project!

XRBs (Ch. 13.5-6), BHs (Ch. 13.11), Accretion (Ch. 14)

ASTR/PHYS 5590: High Energy Astrophysics Spring 2020: Week 12

Grading Allocation

!2

Current Alternative

30%10%

Final Exam will be more (but not entirely) qualitative and open everything

Preferences?

ASTR/PHYS 5590: High Energy Astrophysics Spring 2020: Week 12

High Mass X-ray Binaries

!3

Cen X-3

X-ray Pulses

Sun Accretion Disk

Pulsar

Her X-1

ASTR/PHYS 5590: High Energy Astrophysics Spring 2020: Week 12

NS Mass Measurements

!4

Zhang et al. 2011

ASTR/PHYS 5590: High Energy Astrophysics Spring 2020: Week 12

NS Mass Measurements

!5Fig. 13.18

Clark et al. 2002

“Mass Gap” —>

ASTR/PHYS 5590: High Energy Astrophysics Spring 2020: Week 12 !6

ASTR/PHYS 5590: High Energy Astrophysics Spring 2020: Week 12

Galactic Population of Pulsars

!7

ms pulsars

normal radio pulsars

pulsars in SNRs

ASTR/PHYS 5590: High Energy Astrophysics Spring 2020: Week 12 !8