Preliminary results of Galileo direct imaging of S‐L 9 impacts
Identifieur interne : 000733 ( Main/Exploration ); précédent : 000732; suivant : 000734Preliminary results of Galileo direct imaging of S‐L 9 impacts
Auteurs : Clark R. Chapman [États-Unis] ; William J. Merline [États-Unis] ; Kenneth Klaasen [États-Unis] ; Torrence V. Johnson [États-Unis] ; Catherine Heffernan [États-Unis] ; Michael J. S. Belton [États-Unis] ; Andrew P. Ingersoll [États-Unis]Source :
- Geophysical Research Letters [ 0094-8276 ] ; 1995-06-15.
Abstract
Direct Galileo imaging data were obtained of the Jupiter impact sites for Comet Shoemaker‐Levy 9 fragments K, N, and W during their early, high‐energy phases. Initial ∼5s‐long flashes for all 3 impacts result from radiant bolides; analogous, abrupt onsets of luminosity observed by the Galileo photopolarimeter for other impacts must also be the bolide phase. The 3 bolides were dim at 0.56 or 0.89µm (few percent of total Jupiter) and had similar amplitudes, despite huge late‐stage differences observed from Earth. Subsequent, continuous luminosity lasting ∼40s for K and ∼10s for N is optical radiation as the initial bolide train erupts into a “fireball”. The K light curve may show (a) two impacts 10s apart or (b) delayed evolution of the fireball.
Url:
DOI: 10.1029/95GL01030
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Lett.</title><idno type="ISSN">0094-8276</idno><idno type="eISSN">1944-8007</idno><imprint><publisher>Blackwell Publishing Ltd</publisher><date type="published" when="1995-06-15">1995-06-15</date><biblScope unit="volume">22</biblScope><biblScope unit="issue">12</biblScope><biblScope unit="page" from="1561">1561</biblScope><biblScope unit="page" to="1564">1564</biblScope></imprint><idno type="ISSN">0094-8276</idno></series><idno type="istex">4C7F128CC39789C2583FE95D561EE4EEB63F0499</idno><idno type="DOI">10.1029/95GL01030</idno><idno type="ArticleID">95GL01030</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0094-8276</idno></seriesStmt></fileDesc><profileDesc><textClass></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract">Direct Galileo imaging data were obtained of the Jupiter impact sites for Comet Shoemaker‐Levy 9 fragments K, N, and W during their early, high‐energy phases. Initial ∼5s‐long flashes for all 3 impacts result from radiant bolides; analogous, abrupt onsets of luminosity observed by the Galileo photopolarimeter for other impacts must also be the bolide phase. The 3 bolides were dim at 0.56 or 0.89µm (few percent of total Jupiter) and had similar amplitudes, despite huge late‐stage differences observed from Earth. Subsequent, continuous luminosity lasting ∼40s for K and ∼10s for N is optical radiation as the initial bolide train erupts into a “fireball”. The K light curve may show (a) two impacts 10s apart or (b) delayed evolution of the fireball.</div></front></TEI><affiliations><list><country><li>États-Unis</li></country><region><li>Arizona</li><li>Californie</li></region></list><tree><country name="États-Unis"><region name="Arizona"><name sortKey="Chapman, Clark R" sort="Chapman, Clark R" uniqKey="Chapman C" first="Clark R." last="Chapman">Clark R. Chapman</name></region><name sortKey="Belton, Michael J S" sort="Belton, Michael J S" uniqKey="Belton M" first="Michael J. S." last="Belton">Michael J. S. Belton</name><name sortKey="Heffernan, Catherine" sort="Heffernan, Catherine" uniqKey="Heffernan C" first="Catherine" last="Heffernan">Catherine Heffernan</name><name sortKey="Ingersoll, Andrew P" sort="Ingersoll, Andrew P" uniqKey="Ingersoll A" first="Andrew P." last="Ingersoll">Andrew P. Ingersoll</name><name sortKey="Johnson, Torrence V" sort="Johnson, Torrence V" uniqKey="Johnson T" first="Torrence V." last="Johnson">Torrence V. Johnson</name><name sortKey="Klaasen, Kenneth" sort="Klaasen, Kenneth" uniqKey="Klaasen K" first="Kenneth" last="Klaasen">Kenneth Klaasen</name><name sortKey="Merline, William J" sort="Merline, William J" uniqKey="Merline W" first="William J." last="Merline">William J. Merline</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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