Search Publications
Estimates of the change rate of solar mass and gravitational constant based on the dynamics of the Solar System
Pitjeva, E. V.; Pitjev, N. P.; Pavlov, D. A. +1 more
The estimate of the change rate of the solar gravitational parameter d(GM⊙)∕dt is obtained from processing modern positional observations of planets and spacecraft. Observations were processed and parameters were determined basing on the numerical planetary ephemeris EPM2019. The obtained annual decrease in solar mass M⊙ acco…
Dust observations from Parker Solar Probe: dust ejection from the inner Solar System
Czechowski, A.; Mann, I.
Context. The FIELDS instrument onboard Parker Solar Probe (PSP) observes dust impacts on the spacecraft. The derived dust flux rates suggest that the particles originate from the vicinities of the Sun and are ejected by radiation pressure. Radiation pressure typically ejects particles of several 100 nm and smaller, which are also affected by the e…
Cosmic-ray flux predictions and observations for and with Metis on board Solar Orbiter
Heinzel, P.; Gissot, S.; Sasso, C. +41 more
Context. The Metis coronagraph is one of the remote sensing instruments hosted on board the ESA/NASA Solar Orbiter mission. Metis is devoted to carry out the first simultaneous imaging of the solar corona in both visible light (VL) and ultraviolet (UV). High-energy particles can penetrate spacecraft materials and may limit the performance of the o…