Scientists listen to the sun in new sonification project

Feb 26, 2010

(PhysOrg.com) -- Scientists can now listen to a set of solar wind data that's usually represented visually, as numbers or graphs. University of Michigan researchers have “sonified” the data. They've created an acoustic, or musical, representation of it.

The researchers’ primary goal was to try to hear information that their eyes might have missed in solar wind speed and particle density data gathered by NASA’s Advanced Composition Explorer satellite. The solar wind is a stream of charged particles emanating from the sun.

The process of sonification isn’t new. It’s how Geiger counter radiation detectors emit clicks in the presence of high-energy particles.

“What makes this project different is the level of artistic license I was given,” said composer and recent U-M School of Music alumnus Robert Alexander.

This video is not supported by your browser at this time.
In effort to examine solar data in a new way, researchers worked with a composer to sonify information from NASA's Advanced Composition Explorer Satellite. The resulting music is part art, part science.

The product, which Alexander says is “in between art and science,” sounds appropriately primal and otherworldly. In one version, Alexander used what he describes as a tribal drum beat to represent the rotation of the sun, and he layered the voice of a singer (his sister) to represent the charge state of , for example.

“Every piece of scientific data tells a story. I'm expressing this story through music,” Alexander said. “These sonifications present scientific data in a way that is immediately visceral.”

The fills the solar system and interacts with the planets, said Jason Gilbert, a research fellow in the Department of Atmospheric, Oceanic and Space Sciences. On Earth, solar storms can disrupt power on the ground and on satellites. Scientists study it in part to improve their predictions about how it will behave.

“In this sonification, we can actually hear in the data when the temperature goes up, or when the density increases,” Gilbert said.

While the researchers didn’t detect new information in this initial experiment, they see possibilities. “I am excited for sonification’s potential in research, but I think more work will need to be done to realize that potential,” said Jim Raines, research computer specialist with the Department of Atmospheric, Oceanic and Space Sciences.

Thomas Zurbuchen, an associate dean in engineering and an atmospheric science professor, is proud of these initial results. (The sonification project was his idea.)

“To me, this project exemplifies what U-M is about: creativity reaching seamlessly across many fields to create something new,” Zurbuchen said.

Explore further: The source of the sky's X-ray glow

add to favorites email to friend print save as pdf

Related Stories

Scientists analyse solar wind from moon rock

Apr 10, 2006

Australian National University scientists preparing for the analysis of solar wind samples from NASA’s Genesis mission believe they have already measured solar wind particles in an analysis of lunar soil.

Physicists Trash Turbulence Lab

Apr 13, 2005

Researchers at the University of Warwick have trashed the world's biggest turbulence lab by turning a pleasant stream into a raging torrent - but they say their actions will lead new understandings in one of the main unsolved ...

Tech sails into space-based research project

Sep 16, 2004

Dr. Chris Jenkins, a researcher at South Dakota School of Mines and Technology, is developing instrumentation that could help NASA find planets outside our solar system, photograph the sun and create an advanced warning sy ...

Recommended for you

Titan offers clues to atmospheres of hazy planets

16 hours ago

When hazy planets pass across the face of their star, a curious thing happens. Astronomers are not able to see any changes in the range of light coming from the star and planet system.

Having fun with the equation of time

16 hours ago

If you're like us, you might've looked at a globe of the Earth in elementary school long before the days of Google Earth and wondered just what that strange looking figure eight thing on its side was.

The source of the sky's X-ray glow

Jul 27, 2014

In findings that help astrophysicists understand our corner of the galaxy, an international research team has shown that the soft X-ray glow blanketing the sky comes from both inside and outside the solar system.

User comments : 0