On structural properties of Comet 67/P dust particles collected in situ by ROSETTA/COSIMA from observations of electrical fragmentationShow others and affiliations
2023 (English)In: Planetary and Space Science, Vol. 236, article id 105747Article in journal (Refereed) Published
Abstract [en]
During ESA’s Rosetta science mission, the COSIMA instrument collected dust particles in the coma of Comet 67P/Churyumov-Gerasimenko during two years near the comet’s nucleus. The largest particles are about 1 m m in size. The collection process involved a low velocity impact on porous gold-black surfaces, often resulting in breakup, from which information on structural properties has previously been derived (Langevin et al., 2016). However, some of the particles were collected with little damage, but fragmented due to charging during subsequent secondary ion mass spectrometry. This report shows that the details of this electrical fragmentation support the concept of the existence of stable units with sizes of tens of ÎŒ m within the incoming cometary dust particles prior to collection, possibly representing remnants of the early accretion processes.
Place, publisher, year, edition, pages
2023. Vol. 236, article id 105747
National Category
Astronomy, Astrophysics and Cosmology
Identifiers
URN: urn:nbn:se:ri:diva-66325DOI: 10.1016/j.pss.2023.105747OAI: oai:DiVA.org:ri-66325DiVA, id: diva2:1795739
2023-09-112023-09-112024-05-27Bibliographically approved