Skip to main content

Reset your password

Please enter the e-mail address you used to register to reset your password

Note: The verification e-mail to change your password should arrive immediately. However, in some cases it takes longer. Don't forget to check your spam folder.

If you haven't received the e-mail in 24 hours, please contact customerservices@ioppublishing.org

Registration complete

Thank you for registering with Physics World
If you'd like to change your details at any time, please visit My account

Close
Stars and solar physics

Stars and solar physics

The enduring mystery of the solar corona

16 Sep 2021
Taken from the September 2021 issue of Physics World.

Physicists have long known that the Sun’s magnetic fields make its corona much hotter than the surface of the star itself. But how – and why – those fields transport and deposit their energy is still a mystery, as Philip G Judge explains

solar corona during an eclipse
Sunny times The solar corona photographed by Andreas Möller during the 2020 total eclipse over Argentina (image processing by Miloslav Druckmüller), showing plasma outflowing to space, bright loops and a coronal mass ejection. (Courtesy: Miroslav Druckmüller, Andreas Möller)
Look towards the Sun during a total solar eclipse (taking proper precautions of course) and you’ll

You’ve reached the limit of what you can view on Physics World without registering

If you already have an account on Physics World, then please sign in to continue reading

If you do not yet have an account, please register so you can

  • Access more than 20 years of online content
  • Choose which e-mail newsletters you would like to receive

Philip G Judge is senior researcher in physics at the High Altitude Observatory in Boulder, Colorado, US, e-mail judge@ucar.edu
Read previous

From statistical physics to bioinformatics: using data science for biological discoveries
Read next

Imaging metabolism in action

Discover more from Physics World

Related jobs

Related events

Copyright © 2024 by IOP Publishing Ltd and individual contributors