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8: Schematic representation of the Parker spiral structure of the interplanetary magnetic field in the ecliptic plane. Figure from Bittencourt [2004].
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In this thesis, data analysis and modelling techniques are used to study the impact of solar illumination on the plasma and neutral molecules in Saturns inner magnetosphere. The data used are from the Cassini spacecraft, a joint NASA-ESA-ASI flagship mission to explore the Saturn system. The first study focuses on photoelectron observations by the...
Citations
... Additionally, for Solar corona observations, the SPO family falls within the umbra of the Moon every synodic period. Note that the umbra is the region where a celestial body completely blocks the light of its host star, hence casting a complete shadow [29,30]. Eclipses are evaluated to determine the quality of observational time and the environment of the Solar corona. ...
This paper proposes a framework for a satellite mission with the goal to perform Lunar Occultations within the context of the circular restricted three-body problem (CR3BP) of the Earth-Moon system. This is achieved by exploiting the geometrical relationships between the Earth, Moon, and a spacecraft orbiting around L4. Additionally, it examines the viability of a linear state-feedback control policy to stabilize short-period orbits under the presence of the gravitational effect of the Sun, Solar radiation pressure, and the Lunar orbital eccentricity, which is not accounted for in the CR3BP dynamics. Given the unprecedented NUV angular resolution achieved by a spacecraft at L4, this research proposes a framework for a remote sensing observatory for Solar activity, thereby enabling the monitoring of the entire hemisphere of Solar radiation, and to study different astrophysical issues via Lunar Occultations.
... 20 Note that the Umbra is the region at which a full shadow is produced by a celestial body covering the light of its host star. 21 The investigation analyzes eclipses to depict the quality of the observational time and environment of the Solar corona. Additionally, a Lunar Occultation (LO) occurs when the Moon passes directly between the Sun and s/c to produce a Solar eclipse. ...
There is a significant interest in studying the Solar corona to gather information
about the Sun. This investigation provides an efficient approach to observe the So-
lar corona by using the Moon as an occulter to suppress the blinding luminosity of
the Sun’s surface. Another objective is an analysis and comparison of diffraction
patterns created by Lunar occultations (LO) from L4 and from Earth. By exploit-
ing the Libration point L4 within the Cislunar region, a spacecraft (s/c) would be
within proper position to observe the Solar corona every sidereal month.
