Cosmic Ray Flux Screensaver
The Cosmic Ray Flux screensaver shows cosmic ray intensity measured at ground level by the Oulu neutron monitor, gathered key-less by the pipeline. The count runs inversely to solar activity, so a sudden fall usually means a coronal mass ejection swept past. It's free, runs in your browser, and ESC exits.
How the Cosmic Ray Flux screensaver works
The background pipeline reads this from the Oulu neutron monitor and saves a snapshot the saver loads.
Cosmic ray intensity measured at ground level by the Oulu neutron monitor, gathered key-less by the pipeline.
It refreshes on a schedule, so what you see stays current.
Colours can be changed in settings; nothing is stored beyond your own browser.
A worked example
Cosmic ray intensity measured at ground level by the Oulu neutron monitor, gathered key-less by the pipeline. The count runs inversely to solar activity, so a sudden fall usually means a coronal mass ejection swept past.
Settings & tips
- Accent and Background recolour the display.
- Run
automation/run.py nmdbto refresh the feed. - Press ESC to leave fullscreen.
Frequently asked questions
- Is this real data?
- Yes — it comes from the Oulu neutron monitor and is refreshed on a schedule.
- Why does the count fall when the Sun is active?
- A strong solar wind shields Earth from galactic cosmic rays, so ground-level counts drop. A sharp fall is usually a coronal mass ejection passing.
- Is a key needed?
- No. This source is fully key-less.
- Is it free?
- Yes — free, no download, in your browser.