A Jet from the Sun
Explanation:
What powers the solar wind?
Our Sun is known to emit a powerful
wind of particles with gusts that can even
affect astronauts and
satellites
orbiting Earth.
The cause of the
solar wind
has been debated for decades but is thought to be rooted in
AlfvИn
waves
generated by the ever changing
magnetic field of the Sun.
Newly released images
from the Japanese
Hinode satellite appear to bolster
this hypothesis, imaging an average of 240 daily
plasma jets
that are excellent candidates to fuel the outwardly moving
AlfvИn waves.
The jets and waves are themselves ultimately created by
magnetic reconnection
events, rapid events where lines of constant
magnetic field
suddenly move extremely rapidly, dragging
electrons and
protons along with them.
On the image left, one such jet is visible in
X-ray light.
Bright spots show relatively energetic regions
elsewhere on the Sun.
Authors & editors:
Robert Nemiroff
(MTU) &
Jerry Bonnell
(USRA)
NASA Web Site Statements, Warnings,
and Disclaimers
NASA Official: Jay Norris.
Specific
rights apply.
A service of:
LHEA at
NASA /
GSFC
& Michigan Tech. U.
