Zonneflux

Zonneflux, also known as solar flux, is a measure of the sun's brightness as observed at the wavelength of 10.7 cm on the radio spectrum. It is a key indicator of solar activity and is used to monitor the sun's behavior and predict space weather. The solar flux is typically measured in solar flux units (sfu), where 1 sfu is equal to 10^-22 watts per square meter per hertz.

The solar flux is influenced by the number of sunspots on the sun's surface. Sunspots are cooler, darker areas on the sun that are associated with strong magnetic fields. When the number of sunspots increases, the solar flux also increases, indicating a more active sun. Conversely, a decrease in sunspots is accompanied by a decrease in solar flux.

The solar flux is an important parameter for various fields, including space weather forecasting, radio communication, and satellite operations. It helps scientists understand the sun's activity and its potential impact on Earth's atmosphere and technological systems. The solar flux is typically monitored by observatories and space agencies around the world, and its data is used to create long-term records of solar activity.