Humanity's quest to put eyes and ears on gravitational waves

70d4f7eb14525537a3fd6c15a33a8ac1?s=47 jjhermes
October 21, 2017

Humanity's quest to put eyes and ears on gravitational waves

Outreach talk, 50 min. Oct. 2017: Staunton River Star Party, Scottsburg, VA, USA.

70d4f7eb14525537a3fd6c15a33a8ac1?s=128

jjhermes

October 21, 2017
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Transcript

  1. Humanity's Quest To Put Eyes And Ears On Gravitational Waves

    Dr. JJ Hermes Hubble Fellow University of North Carolina at Chapel Hill www.jjherm.es
  2. V = 13.3 mag Electromagnetic Radiation a.k.a. Visible Light

  3. V = 13.3 mag Wiggling a Charge Gives Off Radiation!

  4. V = 13.3 mag Hotter Things Give Off Bluer Light!

  5. V = 13.3 mag Einstein: Mass Bends Space (General Relativity)

  6. V = 13.3 mag Close Pairs of Stars Bob in

    the Wake of Each Others’ Masses Producing Gravitational Waves!
  7. V = 13.3 mag H -> He fusion in core

    He -> C/O -> … fusion in core 0.08-8 M¤ 8-15 M¤ >15 M¤ Stars Evolve; Some Blow Up!
  8. V = 13.3 mag Binary Neutron Stars

  9. V = 13.3 mag Hulse-Taylor Binary Pulsar – 14 –

    Porb = 7.75 hr Shrinking by 0.076 ms/yr Nobel prize in 1993
  10. V = 13.3 mag

  11. phase = 0 J0651+2844: A 12.75-min WD+WD Binary 1 million

    times fainter than an unaided eye can see
  12. None
  13. Mid-Eclipse Times are Changing Rapidly!

  14. None
  15. Now: Porbit = 12.75 min 500,000 yr from now: Porbit

    = 10 min 750,000 yr from now: Porbit = 8.5 min 1,000,000 yr from now: Porbit = 7 min Mass Transfer Begins
  16. INDIRECT

  17. V = 13.3 mag Gravitational Waves Stretch Space, But Very

    Subtly ΔL L ~ 10-21 Proton: 10-15 m
  18. V = 13.3 mag

  19. V = 13.3 mag

  20. V = 13.3 mag

  21. V = 13.3 mag LIGO

  22. V = 13.3 mag

  23. V = 13.3 mag

  24. V = 13.3 mag

  25. V = 13.3 mag 2017 Nobel Prize in Physics

  26. None
  27. 2017-08-17 at 12:41 UTC

  28. None
  29. None
  30. ~30 deg2 = 120 x full moon

  31. None
  32. None
  33. None
  34. V = 13.3 mag NGC 4993 13:09:47.2 −23:23:04 40 Mpc

    (130 Mly) V=12.4 E/S0 galaxy
  35. None
  36. None
  37. 4.1-m SOAR telescope, Chile 2017-08-23, t=+5.5 d

  38. 2017-08-23T23:29:21.26 I > 20.1 mag

  39. None
  40. V = 13.3 mag Jennifer Johnson

  41. V = 13.3 mag Kyle Slinker, UNC Chapel Hill Gravitational

    Waves: Listening to Black Holes Collide Dr. Bart Dunlap, UNC Chapel Hill The Bangs and Whimpers of Stellar Collisions Tue Nov. 7 Free, All Ages Welcome Fullsteam Brewery, Durham, NC 7-9 pm; Talks start at 7:30 pm Come Hear About Gravitational Waves Over Some High-Gravity Beers! @AoTTriangle facebook.com/aottriangle Nobel Approved!
  42. V = 13.3 mag