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Nanodust detection between 1 and 5 AU by using Cassini wave measurements by Schippers, P.; Meyer-Vernet, N.; Lecacheux, A.; Belheouane, S.; Moncuquet, M.; Kurth, W. S.; Mann, I.; Mitchell, D. G.; André, N. is a scholarly article available to read on EtoBox.

What is Nanodust detection between 1 and 5 AU by using Cassini wave measurements about?

The solar system contains solids of all sizes, ranging from km-size bodies to nano-sized particles. Nanograins have been detected in situ in the Earth's atmosphere, near cometary and giant planet environments, and more recently in the solar wind at 1 AU. These latter nano grains are thought to be formed in the inner solar system dust cloud, mainly through collisional break-up of larger grains and are then picked-up and accelerated by the magnetized solar wind because of their large charge-to-mass ratio. In the present paper, we analyze the low frequency bursty noise identified in the Cassini radio and plasma wave data during the spacecraft cruise phase inside Jupiter's orbit. The magnitude, spectral shape and waveform of this broadband noise is consistent with the signature of nano particles impinging at nearby the solar wind speed on the spacecraft surface. Nanoparticles were observed whenever the radio instrument was turned on and able to detect them, at different heliocentric distances between Earth and Jupiter, suggesting their ubiquitous presence in the heliosphere. We analyzed the radial dependence of the nano dust flux with heliospheric distance and found that it is consiste

Author

Schippers, P.; Meyer-Vernet, N.; Lecacheux, A.; Belheouane, S.; Moncuquet, M.; Kurth, W. S.; Mann, I.; Mitchell, D. G.; André, N.

Published

2015

Language

EN