Empirical Modeling of Jovian Electron Distributions Using Juno's MWR Synchrotron Radiation Observations

The spin stabilized Juno spacecraft is in polar orbit about Jupiter. During perijove passes, a suite of instruments observes the planet and the Jovian magnetosphere. One of these instruments, the Microwave Radiomter (MWR), is designed to sound the atmosphere from 0.5 atm to over 100 atm pressure. MWR accomplishes this by measuring microwave emission at 6 wavelengths from 2 cm to 50 cm. With every spin of the spacecraft, these 6 channels will also observe synchrotron emission from relativistic electrons in the Jovian radiation belts. This data can be used to greatly improve our models of the inner radiation belts. This paper describes an inverse methodology to extract electron distribution parameters from synchrotron emission observed along MWR's lines of sight through each Jovian pass.