iSGTW - International Science Grid This Week
iSGTW - International Science Grid This Week

Home > iSGTW 05 September 2007 > iSGTW Image of the week - Solar magnetic fields

Image of the week - Solar magnetic fields

A simulation of the 3D magnetohydrodynamics at play in the outer third of a star. Each “hair” represents a magnetic field line embedded in the stellar plasma flow. Near the equator, the convective flows tend to align with the axis of rotation; in higher latitudes the convection is more cyclonic.
Image produced using VAPOR

Complicated by wild convection occurring in the outer third of a star’s plasma, and by rotation that twists a star’s magnetic field into a spiral, stellar magnetohydrodynamics really is as complex as it sounds.

Magnetohydrodynamics is the study of motion and magnetism in conducting fluids such as plasmas, liquid metals and seawater.

The “hydro” bit refers to fluids, the “dynamics” bit means movement, and the “magneto” part comes into play because magnetic fields induce currents in moving conductive fluids, and are themselves amplified by the fluids’ motions.

So when the moving conductive fluid you’re discussing is an enormous ball of turbulent, spinning stellar plasma, things can really start to get interesting.

A team of scientists at the University of Colorado are using grid power to visualize the magnetohydrodynamics at work in stars.

Understanding this phenomenon is essential to our understanding of the solar magentic dynamo, which in turn results in solar flares, sun spots and the solar wind.

The visualization was conducted over the TeraGrid using VAPOR—the Visualization and Analysis Platform for Ocean, Atmosphere and Solar Researchers.

The VAPOR software was developed by the National Center for Atmospheric Research’s Scientific Computing Division in collaboration with U.C. Davis and Ohio State University, all in the U.S.

VAPOR is supported by the U.S. National Science Foundation.

- Cristy Burne, iSGTW



 iSGTW 22 December 2010

Feature – Army of Women allies with CaBIG for online longitudinal studies

Special Announcement - iSGTW on Holiday

Video of the Week - Learn about LiDAR


NeHC launches social media

PRACE announces third Tier-0 machine

iRODS 2011 User Group Meeting

Jobs in distributed computing


Enter your email address to subscribe to iSGTW.


 iSGTW Blog Watch

Keep up with the grid’s blogosphere

 Mark your calendar

December 2010

13-18, AGU Fall Meeting

14-16, UCC 2010

17, ICETI 2011 and ICSIT 2011

24, Abstract Submission deadline, EGI User Forum


January 2011

11, HPCS 2011 Submission Deadline

11, SPCloud 2011

22, ALENEX11

30 Jan – 3 Feb, ESCC/Internet2


February 2011

1 - 4, GlobusWorld '11

2, Lift 11

15 - 16, Cloudscape III

More calendar items . . .


FooterINFSOMEuropean CommissionDepartment of EnergyNational¬†Science¬†Foundation RSSHeadlines | Site Map