nasa: supernova
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NASA: Supernova. Janet Moore NASA Educator Ambassador. NSTA Cincinnati. 1. The NASA E/PO Program at Sonoma State University. Swift. A group of people working collaboratively to educate the public about current and future NASA high energy astrophysics/astronomy missions. - PowerPoint PPT PresentationTRANSCRIPT
NASA:Supernova
Janet MooreNASA Educator Ambassador
1
NSTA Cincinnati
The NASA E/PO Program at Sonoma State University
A group of people working collaboratively to educate the public about current and future NASA high energy astrophysics/astronomy missions.
Led by Prof. Lynn Cominsky
Swift
Fermi (GLAST)
XMM-Newton
Supernova !
Find the supernova
Image: R. Jay GeBany
Core of star collapses
Resulting shock
disrupts envelope
Resulting shock
disrupts envelope
Star explodes
Life Cycle of a Supernova
Stellar evolution made simple
Stars like the Sun go gentle into that good night
More massive stars rage, rage against the dying of the light
Puff!
Bang!
BANG!
0.077 ~8 Mo
~8 ~20 Mo
~20 ~100 Mo
Rare Look at a Supernova
XRT UVOT
Swift Images of NGC 2770
2008 January 7:00 UT
Rare Look at a Supernova
Swift Images of NGC 2770
XRT UVOT2008 January 9:00 UT
Three Supernova Activities
•Fishing for Supernovae•Crawl of the Crab•Magnetic Poles and Pulsars
Three Supernova Activities
•Fishing for Supernovae•Crawl of the Crab•Magnetic Poles and Pulsars
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Three Supernova Activities
•Fishing for Supernovae•Crawl of the Crab•Magnetic Poles and Pulsars
Crawl of the Crab
Crawl of the CrabWe will use
two pictures of the Crab Nebula
1956
1999
Crab Pulsar
Lots of Knots
Measuring Expansion Gives Age
1.Assume pulsar remains at center of nebula
2.Knots came from star, were blown out by the supernova, and travel at a constant velocity in a constant direction
3.If we can calculate that velocity, we can calculate how long to get from the star to the “current” location
Measuring Expansion Gives Age
• - OR -
• Use one of the knots to make a proportion!
• Distance in 43 years = Total Distance
• 43 (years) Total Time
So, let’s get started!•Packet
•Rulers
•Calculators
•Do NOT do graphing part
•Each group choose ONE knot to make calculations from
Your ResultsAccording to your calculations, in what year did the supernova
occur?
Why might we get different answers for different knots?
How might you use this in your classroom?
Questions?
Thank You!Janet Moore
My Other Workshops:
DARK MATTER9:30 am - Room 263NEWTON’S LAWS 11:00 am - Room 207
PI IN THE SKY 3:30 - Room 262
http://www.astro.princeton.edu/~alicia/SN2008D/
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