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On Music and
Astrophysics
Jodrell Bank, UK
Astrophysicists transform noise into data
and data into knowledge
noise - data - knowledge




Revealing
  geometry,
     chemistry,
        physical dynamics,
            evolution
natural data




Electromagnetic radiation ('light')

Physical pressure waves ('sound')
22cm wavelength
  observation of Jupiter
13cm wavelength
  observation of Jupiter
Optical overlay on 22cm
X-ray overlay on 22cm
Voyager entering the solar
         wind shockwave
           around Jupiter
recipes for transformation




Ingredients:
  1 radio data-cube
A radio data-cube is usually thought of with X-Y as "space...
ngc4501
ngc4501
ngc4501
ngc4501




Take a Radio Spectral Cube and turn it into sound.

The cube is like an image, but instead of each pixel being...
ngc4501
PSR J0737-3039A/B
Jaakko Mattila, “One”
rules of engagement




note to self: “avoid shallow art and shallow science and not engaging with anyone”
rules of engagement




Build coherent bridges with audiences – if 'art' is used as a tool to assist the public understand...
Collaborators:
  Andrew Newsam (Astrophysics + Software) www.dgen.net
  Peter Clive (Astrophysics + Piano)
  Andrew Conway...
www.dgen.net
              Gavin Starks
B.Sc. (Astronomy) M.Mus. (Computer-Music)
           gavin@dgen.net
Acoustic Cosmology at DEAF04
Acoustic Cosmology at DEAF04
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Acoustic Cosmology at DEAF04

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Presentation at DEAF04 in Netherlands

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Acoustic Cosmology at DEAF04

  1. 1. On Music and Astrophysics
  2. 2. Jodrell Bank, UK
  3. 3. Astrophysicists transform noise into data
  4. 4. and data into knowledge
  5. 5. noise - data - knowledge Revealing geometry, chemistry, physical dynamics, evolution
  6. 6. natural data Electromagnetic radiation ('light') Physical pressure waves ('sound')
  7. 7. 22cm wavelength observation of Jupiter
  8. 8. 13cm wavelength observation of Jupiter
  9. 9. Optical overlay on 22cm
  10. 10. X-ray overlay on 22cm
  11. 11. Voyager entering the solar wind shockwave around Jupiter
  12. 12. recipes for transformation Ingredients: 1 radio data-cube A radio data-cube is usually thought of with X-Y as "space" and Z as "velocity". However, Z is actually frequency, of course. So, a single X/Y "pixel" actually contains a power spectrum. *So*, if we assume some form for the phases (random?) then each X/Y "pixel" can be used to produce a tone (aka "note" :-). So, a piece can be played by selecting notes by moving over the image of the galaxy in some way.
  13. 13. ngc4501
  14. 14. ngc4501
  15. 15. ngc4501
  16. 16. ngc4501 Take a Radio Spectral Cube and turn it into sound. The cube is like an image, but instead of each pixel being a single "colour", it is actually a spectrum. Selecting a pixel with the mouse takes that spectrum and transforms the radio frequencies into an audible range, then it creates a sound with that spectrum. Similarly, the radio frequencies have been transformed into visible colours so you can see them, blue for "higher frequency" and red for "lower frequency". You can see and hear the structure of the spiral arms, even the discord in the middle where both are super-imposed.
  17. 17. ngc4501
  18. 18. PSR J0737-3039A/B
  19. 19. Jaakko Mattila, “One”
  20. 20. rules of engagement note to self: “avoid shallow art and shallow science and not engaging with anyone”
  21. 21. rules of engagement Build coherent bridges with audiences – if 'art' is used as a tool to assist the public understanding of 'science' then it's important to provide 'empirical' inspiration to support 'creative' inspiration.
  22. 22. Collaborators: Andrew Newsam (Astrophysics + Software) www.dgen.net Peter Clive (Astrophysics + Piano) Andrew Conway (Astrophysics + Welding) Aidan Keane (Cosmology) Ulya Gumeniuk (Oil Painter) www.ulyanagumeniuk.com Jaakko Mattila (Oil Painter) www.jasu.maasyke.fi Image and animation credits: Jodrell Bank www.jb.man.ac.uk VLA www.vla.nrao.edu University of Iowa www-pw.physics.uiowa.edu NASA www.nasa.gov ESA www.esa.int
  23. 23. www.dgen.net Gavin Starks B.Sc. (Astronomy) M.Mus. (Computer-Music) gavin@dgen.net

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