Comet 17P/Holmes: possibility of a CO driven explosion
International audience This work is a continuation of our previous paper about brightening of Comet 17P/Holmes (Kossacki and Szutowicz, 2010). In that paper we presented results of simulations indicating that the nonuniform crystallization of amorphous water ice itself is probably not sufficient for...
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ftccsdartic:oai:HAL:hal-00734594v1 2024-02-04T10:04:36+01:00 Comet 17P/Holmes: possibility of a CO driven explosion Kossacki, Konrad J. Szutowicz, Slawomira Pasteura 7 Space Research Centre of Polish Academy of Sciences (CBK) Polska Akademia Nauk = Polish Academy of Sciences = Académie polonaise des sciences (PAN) 2011-03-24 https://hal.science/hal-00734594 https://hal.science/hal-00734594/document https://hal.science/hal-00734594/file/PEER_stage2_10.1016%252Fj.icarus.2011.01.007.pdf https://doi.org/10.1016/j.icarus.2011.01.007 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.icarus.2011.01.007 hal-00734594 https://hal.science/hal-00734594 https://hal.science/hal-00734594/document https://hal.science/hal-00734594/file/PEER_stage2_10.1016%252Fj.icarus.2011.01.007.pdf doi:10.1016/j.icarus.2011.01.007 info:eu-repo/semantics/OpenAccess ISSN: 0019-1035 EISSN: 1090-2643 Icarus https://hal.science/hal-00734594 Icarus, 2011, 212 (2), pp.847. ⟨10.1016/j.icarus.2011.01.007⟩ Comets Composition Ices [SDU]Sciences of the Universe [physics] info:eu-repo/semantics/article Journal articles 2011 ftccsdartic https://doi.org/10.1016/j.icarus.2011.01.007 2024-01-06T23:22:46Z International audience This work is a continuation of our previous paper about brightening of Comet 17P/Holmes (Kossacki and Szutowicz, 2010). In that paper we presented results of simulations indicating that the nonuniform crystallization of amorphous water ice itself is probably not sufficient for an explosion. In the present work we investigate the possibility that the explosion is caused by a rapid sublimation of the CO ice leading to the rise of gas pressure above the tensile strength of the nucleus. We simulated evolution of a model nucleus in the orbit of Comet 17P/Holmes. The nucleus is composed of water ice, carbon monoxide ice and dust and has the shape of an elongated ellipsoid. The simulations include crystallization of amorphous ice in the nucleus, changes of the dust mantle thickness, and sublimation of the CO ice. In our model CO is mantling grains composed of dust and amorphous water ice. Orientation of the nuclear spin axis in space is the same as derived in Moreno et al. (2008) for Comet Holmes during recent brightening event. Hence, the angle between the orbital and the equatorial planes of the comet is I = 95°, and the cometocentric solar longitude at perihelion is Φ = 210°. The calculations are performed for the south pole being the subsolar point close to time of the outburst. Our computations indicate, that the CO pressure within the comet nucleus can rise to high values. When the layer between the dust mantle and the crystallization front of the amorphous water ice is very fine grained, few microns in radius, the CO pressure within the nucleus can exceed 10 kPa. This value is the lowest estimate for the tensile strength of the nucleus of Comet Holmes (Reach et al., 2010). Hence, when the gas pressure reaches this value the nucleus may explode. Article in Journal/Newspaper South pole Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Moreno ENVELOPE(-62.300,-62.300,-64.083,-64.083) South Pole Icarus 212 2 847 857 |
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Open Polar |
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Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
Comets Composition Ices [SDU]Sciences of the Universe [physics] |
spellingShingle |
Comets Composition Ices [SDU]Sciences of the Universe [physics] Kossacki, Konrad J. Szutowicz, Slawomira Comet 17P/Holmes: possibility of a CO driven explosion |
topic_facet |
Comets Composition Ices [SDU]Sciences of the Universe [physics] |
description |
International audience This work is a continuation of our previous paper about brightening of Comet 17P/Holmes (Kossacki and Szutowicz, 2010). In that paper we presented results of simulations indicating that the nonuniform crystallization of amorphous water ice itself is probably not sufficient for an explosion. In the present work we investigate the possibility that the explosion is caused by a rapid sublimation of the CO ice leading to the rise of gas pressure above the tensile strength of the nucleus. We simulated evolution of a model nucleus in the orbit of Comet 17P/Holmes. The nucleus is composed of water ice, carbon monoxide ice and dust and has the shape of an elongated ellipsoid. The simulations include crystallization of amorphous ice in the nucleus, changes of the dust mantle thickness, and sublimation of the CO ice. In our model CO is mantling grains composed of dust and amorphous water ice. Orientation of the nuclear spin axis in space is the same as derived in Moreno et al. (2008) for Comet Holmes during recent brightening event. Hence, the angle between the orbital and the equatorial planes of the comet is I = 95°, and the cometocentric solar longitude at perihelion is Φ = 210°. The calculations are performed for the south pole being the subsolar point close to time of the outburst. Our computations indicate, that the CO pressure within the comet nucleus can rise to high values. When the layer between the dust mantle and the crystallization front of the amorphous water ice is very fine grained, few microns in radius, the CO pressure within the nucleus can exceed 10 kPa. This value is the lowest estimate for the tensile strength of the nucleus of Comet Holmes (Reach et al., 2010). Hence, when the gas pressure reaches this value the nucleus may explode. |
author2 |
Pasteura 7 Space Research Centre of Polish Academy of Sciences (CBK) Polska Akademia Nauk = Polish Academy of Sciences = Académie polonaise des sciences (PAN) |
format |
Article in Journal/Newspaper |
author |
Kossacki, Konrad J. Szutowicz, Slawomira |
author_facet |
Kossacki, Konrad J. Szutowicz, Slawomira |
author_sort |
Kossacki, Konrad J. |
title |
Comet 17P/Holmes: possibility of a CO driven explosion |
title_short |
Comet 17P/Holmes: possibility of a CO driven explosion |
title_full |
Comet 17P/Holmes: possibility of a CO driven explosion |
title_fullStr |
Comet 17P/Holmes: possibility of a CO driven explosion |
title_full_unstemmed |
Comet 17P/Holmes: possibility of a CO driven explosion |
title_sort |
comet 17p/holmes: possibility of a co driven explosion |
publisher |
HAL CCSD |
publishDate |
2011 |
url |
https://hal.science/hal-00734594 https://hal.science/hal-00734594/document https://hal.science/hal-00734594/file/PEER_stage2_10.1016%252Fj.icarus.2011.01.007.pdf https://doi.org/10.1016/j.icarus.2011.01.007 |
long_lat |
ENVELOPE(-62.300,-62.300,-64.083,-64.083) |
geographic |
Moreno South Pole |
geographic_facet |
Moreno South Pole |
genre |
South pole |
genre_facet |
South pole |
op_source |
ISSN: 0019-1035 EISSN: 1090-2643 Icarus https://hal.science/hal-00734594 Icarus, 2011, 212 (2), pp.847. ⟨10.1016/j.icarus.2011.01.007⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.icarus.2011.01.007 hal-00734594 https://hal.science/hal-00734594 https://hal.science/hal-00734594/document https://hal.science/hal-00734594/file/PEER_stage2_10.1016%252Fj.icarus.2011.01.007.pdf doi:10.1016/j.icarus.2011.01.007 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1016/j.icarus.2011.01.007 |
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Icarus |
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212 |
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2 |
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857 |
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