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Schrodinger's Cat Is In Town II

Schrodinger's Cat Is In Town II

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Abbie Stevens

January 25, 2020
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  1. Schrodinger’s Cat is in Town II Dr. Abbie Stevens

  2. Image: R.N. Bailey, CC BY 4.0, WikiMedia 2 2 Life

    cycle of a star
  3. Neutron star • Leftover when a massive star (10-20x as

    big as our Sun) dies in a supernova WaLs+16 Image credit: ESA / HST / L. Calcada / NASA GSFC
  4. Neutron star • Leftover when a massive star (10-20x as

    big as our Sun) dies in a supernova • About 15 miles across, with 1.5x the mass of the Sun! Watts+16 Image credit: Google maps
  5. Neutron star • Leftover when a massive star (10-20x as

    big as our Sun) dies in a supernova • About 15 miles across, with 1.5x the mass of the Sun! • Their average density is equal to the density of an atomic nucleus! Watts+16 Image credit: Watts+16
  6. Neutron star • Leftover when a massive star (10-20x as

    big as our Sun) dies in a supernova • About 15 miles across, with 1.5x the mass of the Sun! • Their average density is equal to the density of an atomic nucleus! Watts+16 Image credit: WaLs+16
  7. Neutron star • Leftover when a massive star (10-20x as

    big as our Sun) dies in a supernova • About 15 miles across, with 1.5x the mass of the Sun! • Their average density is equal to the density of an atomic nucleus! • VERY strong gravity: acceleration at surface is 100,000,000,000x stronger than on Earth Watts+16 Image credit: JBO/John Rowe Animation
  8. Neutron star Photo credit: F.E.Austin • Le^over when a massive

    star (10-20x as big as our Sun) dies in a supernova • About 15 miles across, with 1.5x the mass of the Sun! • Their average density is equal to the density of an atomic nucleus! • VERY strong gravity: accelera_on at surface is 100,000,000,000x stronger than on Earth • Has a magne_c field 1 billion – 1 quadrillion _mes stronger than Earth’s
  9. Neutron star • Leftover when a massive star (10-20x as

    big as our Sun) dies in a supernova • About 15 miles across, with 1.5x the mass of the Sun! • Their average density is equal to the density of an atomic nucleus! • VERY strong gravity: acceleration at surface is 100,000,000,000x stronger than on Earth • Has a magnetic field 1 billion – 1 quadrillion times stronger than Earth’s • Spin on their axis up to 100’s of times per second! Watts+16 Image credit: Warner Bros.
  10. PULSAR • A neutron star with a very strong magne_c

    field Watts+16 Image credit: Mysid/R. Smits Magnetic field lines (invisible!)
  11. PULSAR • A neutron star with a very strong magnetic

    field • Shines bright beams of light out of its north and south magnetic poles Watts+16 Video credit: NASA
  12. Fancy PULSAR Some types of pulsars might have a twisted

    magnetic field structure, so they might have multiple poles in different shapes and locations! Watts+16 Video credit: NASA
  13. PULSAR • A neutron star with a very strong magne_c

    field • Shines bright beams of light out of its north and south magne_c poles • Beams of light + spinning = pulses (like a lighthouse) Watts+16 Kramer gif Image credit: M. Kramer; H.Craft/P.Saville
  14. Studying pulsars in space Image credit: NASA NICER: Neutron star

    Interior Composition ExploreR
  15. Studying pulsars in space Video credit: NASA

  16. Supernova remnants • Gas from outer layers of exploding star

    heating up as it hits ambient space dust Watts+16 Image credit: NASA/CXC/SAO
  17. Supernova remnants • Gas from outer layers of exploding star

    hea_ng up as it hits ambient space dust Watts+16 Image credit: NASA/CXC/RIKEN & GSFC/T. Sato+ & DSS Image credit: NASA/CXC/SAO
  18. Supernova remnants • Gas from outer layers of exploding star

    heating up as it hits ambient space dust Watts+16 Image credit: NASA/ESA/HST
  19. Pulsar wind nebulae • Energetic particles from the pulsar collide

    with the ambient space dust Image credit: NASA/CXC/SAO/F.Seward & ESA/ASU/J.Hester & A.Loll; & JPL-Caltech/UMinn./R.Gehrz
  20. Pulsar wind nebulae • Energetic particles from the pulsar collide

    with the ambient space dust Image credit: NASA/ESA/STScI/F.Summers+; CXC/SAO/N.Wolk+ & Caltech/IPAC/R.Hurt
  21. Pulsar wind nebulae • Energetic particles from the pulsar collide

    with the ambient space dust Image credit: NASA/JPL-Caltech/McGill
  22. What you’re doing! Watts+16 Image credits: N. Gentry;

  23. • Chandra X-ray Observatory: chandra.harvard.edu/photo/ • NASA Goddard Space Flight

    Center Media Studios: gms.gsfc.nasa.gov/ • Scientific papers: • Watts et al. 2016, RevModPhys 88, 021001 • Arzoumanian & Gendreau 2019 on ApJL Focus issue Further resources
  24. Image credit: NASA/CXC/K. Divona

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