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Coordinated Study on Solar Wind Turbulence During the Venus-Express, ACE and Ulysses Alignment of August 2007
Orsini, S.; Baumjohann, W.; Bavassano, B. +14 more
At the end of August 2007, Venus, Earth and Ulysses were aligned within a few degrees. This unusual event gives the opportunity to attempt a coordinated study on the radial evolution of solar wind turbulence and coronal transients like CMEs between 0.7 and 1.4 AU. Interplanetary magnetic field data and moments of proton velocity distribution funct…
CoRoT-2a Magnetic Activity: Hints for Possible Star–Planet Interaction
Pagano, Isabella; Lanza, Antonino F.; Baglin, Annie +3 more
CoRoT-2a is a young (≈0.5 Gyr) G7V star accompanied by a transiting hot-Jupiter, discovered by the CoRoT satellite (Alonso et al. Astron Astrophys 482:L21, 2008; Bouchy et al. Astron Astrophys 482:L25, 2008). An analysis of its photospheric activity, based on spot modelling techniques previously developed by our group for the analysis of the Sun a…
The Interstellar Heliopause Probe: Heliospheric Boundary Explorer Mission to the Interstellar Medium
Wimmer-Schweingruber, Robert F.; McNutt, Ralph; IHP/HEX Team
The Sun, driving a supersonic solar wind, cuts out of the local interstellar medium a giant plasma bubble, the heliosphere. ESA, jointly with NASA, has had an important role in the development of our current understanding of the Suns' immediate neighborhood. Ulysses is the only spacecraft exploring the third, out-of-ecliptic dimension, while SOHO …
The Energy Cascade in Solar Wind MHD Turbulence
Bavassano, B.; Bruno, R.; Carbone, V. +3 more
Direct evidence for the presence of an inertial energy cascade, the most characteristic signature of hydromagnetic turbulence (MHD), is observed in the solar wind by the Ulysses spacecraft. A linear relation is indeed observed for the scaling of mixed third order structure functions involving Elsässer variables. This experimental result, confirmin…
Saturn Satellites as Seen by Cassini Mission
Capaccioni, F.; Orosei, R.; Cerroni, P. +5 more
In this paper we will summarize some of the most important results of the Cassini mission concerning the satellites of Saturn. The Cassini Mission was launched in October 1997 on a Titan IV-Centaur rocket from Cape Canaveral. Cassini mission was always at risk of cancelation during its development but was saved many times thanks to the great inter…
AKARI—Infrared Satellite Mission—Present Status and Early Results
Onaka, Takashi
AKARI, formerly known as ASTRO-F, is a satellite mission dedicated to infrared astronomy for the first time in Japan. It has a 685-mm aperture telescope with two focal-plane instruments cooled by liquid helium (LHe) and mechanical coolers on board for observations in the 2–180 µm infrared spectral range. AKARI was launched on 2006 February 2…