Aggregate dust particles at comet 67P/Churyumov–Gerasimenko

Remarkably high abundance of presolar grains in interplanetary dust particles collected from the comet Grigg-Skjellerup dust stream

Introduction: Interplanetary dust particles (IDPs) have been shown to preserve isotopic anomalies, particularly in nitrogen and hydrogen associated with molecular cloud organic material [1-3]. Furthermore, with the heightened capabilities of the NanoSIMS ion microprobe, submicrometer-sized presolar silicate grains have been identified in IDPs [3-6]. Recently, four IDPs collected during the 2003...

Isotopic and Micro-Raman investigation of Interplanetary Dust Particles Collected during 2003 Earth passage through Comet Grigg-Skjellerup Dust Stream

Isotopic and Micro-raman Investigation of Interplanetary Dust Particles Collected during 2003 Earth Passage through Comet Grigg-skjellerup Dust

Introduction: In April 2003, NASA flew stratospheric dust collectors to coincide with the expected passage of the Earth through the dust trail of comet Grigg-Skjellerup. Whether any Grigg-Skjellerup particles were collected (along with “normal” Interplanetary Dust Particles or IDPs) and how such would be recognized is still uncertain, though there is evidence for unusual noble gases in some of ...

Dust environment of Comet Hyakutake 1996B2

Narrow-band wide-field CCD images of the dust tail of Comet Hyakutake 1996B2 are analysed by means of the inverse dust tail model (Fulle 1989). The dust tail fits allow us to estimate the ejection velocity, mass loss rate and size distribution of the dust grains ejected during the months of March and April, 1996 (when the heliocentric distance was decreasing from 1.5 AU to 0.5 AU), in the size ...

Comet Dust from Airborne Leonid Storm Observations

For the past five years, rare Leonid meteor storms offered unique access to cometary dust by spectacular manifestations of recently ejected dust grains, which could be observed by exceptional meteor observing techniques. The final storms, those of November 19, 2002, measured the dust distribution in a comet dust trail far from the position of the comet itself. The measured spatial and particle ...