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Posted: **Sat Feb 26, 2022 11:42 am**

: 14 In Solar Studies An Often Used Hybrid Density Model Is N 108cm 31 15 45 3 16 1 0 0033 R16 R6 R4 1 R2 Wher 1 (43.41 KiB) Viewed 44 times

: 14 In Solar Studies An Often Used Hybrid Density Model Is N 108cm 31 15 45 3 16 1 0 0033 R16 R6 R4 1 R2 Wher 2 (59.01 KiB) Viewed 44 times

14. In solar studies an often-used 'hybrid' density model is n [108cm-31 15.45 3.16 1 0.0033 + + + R16 R6 R4 (1) R2 where R is the heliocentric height in solar radius (R.). Calculate the electron densities at dis- tances of 1 R. and 10 R. above the solar surface using this model. Compare the densities and the corresponding frequencies to those you got from question 13.

13. In IP space an often-used approximation for atmospheric electron density, ne, scales as ne = no/Ra, where no (cm-3) is the plasma density near Earth at 1 AU, and Rd (in AU) is the distance from the Sun. The value of no ranges from ~5 cm-3 around solar minimum to ten times this value at solar maximum. Calculate the electron densities at distances of 1 R. and 10 R. above the solar surface using this model, at the times of solar minimum and maximum. What plasma frequencies do they correspond to?