Solar flux unit

Thesolar flux unit(sfu) is a convenient measure of spectral flux density often used in solar radio observations, such as the F10.7 solar activity index:

1 sfu = 10⁴Jy= 10⁻²²W⋅m⁻²⋅Hz⁻¹= 10⁻¹⁹erg⋅s⁻¹⋅cm⁻²⋅Hz⁻¹.

Seejanskyfor further information about related units; one Jy = 10⁴= 10⁻²⁶W⋅m⁻²⋅Hz⁻¹= 10⁻²³erg⋅s⁻¹⋅cm⁻²⋅Hz⁻¹.

External links

• F10.7 cm Radio Emissions | NOAA / NWS Space Weather Prediction Center