FORMATION AND ACCELERATION OF NANO DUST IN THE INNER HELIOSPHERE

Journal Article · Sat May 01 00:00:00 EDT 2010 · Astrophysical Journal

DOI:https://doi.org/10.1088/0004-637X/714/1/89· OSTI ID:21448956

Czechowski, A ^[1]; Mann, I ^[2]

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1. Space Research Centre, Polish Academy of Sciences, Bartycka 18A, 00-716 Warsaw (Poland)
2. Belgium Institute for Space Aeronomie, 3 Avenue Circulaire, 1180 Brussels (Belgium)

We study the dynamics of nano dust grains in the region inward from 1 AU. Assuming that the grains are created with the velocities close to Keplerian, we find that, despite the strong coupling to magnetic field, there is a population of trapped nano grains within about 0.2 AU from the Sun. The nano dust grains produced outside of the trapped region are accelerated to high velocities, of the order of 300 km s{sup -1}, provided that the charge to mass ratio is not much less than 10{sup -5} e/m{sub p}. These values correspond to dust sizes equal or smaller than approximately 10 nm.

• OSTI ID: 21448956
• Journal Information: Astrophysical Journal, Vol. 714, Issue 1; Other Information: DOI: 10.1088/0004-637X/714/1/89; ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
DUSTS
HELIOSPHERE
MAGNETIC FIELDS
SOLAR WIND
SUN
ATMOSPHERES
MAIN SEQUENCE STARS
SOLAR ACTIVITY
SOLAR ATMOSPHERE
STARS
STELLAR ACTIVITY
STELLAR ATMOSPHERES
STELLAR WINDS