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NASA: Supernova Janet Moore NASA Educator Ambassador NSTA Cincinnati 1 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. Swift Led by Prof. Lynn Cominsky Fermi (GLAST) XMM-Newton Supernova ! Find the supernova Image: R. Jay GeBany k e Core of star collapses Resulting shock disrupts envelope Star explodes Life Cycle of a Supernova Stellar evolution made simple Puff! 0.077 ~8 Mo Bang! ~8 ~20 Mo BANG! ~20 ~100 Mo Stars like the Sun go gentle into that good night More massive stars rage, rage against the dying of the light Rare Look at a Supernova XRT 2008 January 7:00 UT UVOT Swift Images of NGC 2770 Rare Look at a Supernova XRT 2008 January 9:00 UT UVOT Swift Images of NGC 2770 Three Supernova Activities •Fishing for Supernovae Crawl of the •Crawl of the Crab Crab •Magnetic Poles and Pulsars 10 Crawl of the Crab 1956 We will use two pictures of the Crab Nebula Crab Pulsar 1999 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 = Distance • 43 (years) Total 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 Results According 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 [email protected] My Other Workshops: DARK MATTER 9:30 am - Room 263 NEWTON’S LAWS 11:00 am - Room 207 PI IN THE SKY 3:30 - Room 262 Additional Information http://www.astro.princeton.edu/~alicia/SN2008D/
