Dust shells and dark linear structures on dust tails of historical and recent long-period comets [PDF]
Astronomy & AstrophysicsContext. Dust halos or shells, along with linear dark structures along the axes of dust tails, are commonly observed in many long- period comets near perihelion. Examples range from the recent C/2023 A3 (Tsuchinshan-ATLAS) to historical comets such as the Great Comet of 1874, C/1874 H1 (Coggia). Aims.
Fernando Moreno, Emmanuel Jehin
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Measuring Physical Properties at the Surface of a Comet Nucleus [PDF]
, 2021 The European Space Agency’s cornerstone mission Rosetta is due for launch in January 2003. It will perform a rendezvous with comet 46P/Wirtanen beyond 3 AU and, following an initial mapping phase, deploy a lander to a selected site on the nucleus surface.
Ball, Andrew Jonathan, Ball, Andrew J.
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Thermal model of water and CO activity of Comet C/1995 O1 (Hale-Bopp) [PDF]
, 2011 An investigation of the activity of Comet C/1995 O1 (Hale-Bopp) with a thermophysical nucleus model that does not rely on the existence of amorphous ice is presented.
H.U. Keller +8 more
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Investigating the Composition of Listeria actin Comet Tails [PDF]
, 2022 Several intracellular bacterial pathogens, including Listeria monocytogenes (Lm), can colonizethe cytosol of host cells during infection. Cytosolic Lm then hijacks the host cells’ actin polymerization machinery using ActA to recruit the host Arp2/3 ...
Viernes, Clandestine
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Identification by Raman spectroscopy of Mg–Fe content of olivine samples after impact at 6kms?1 onto aluminium foil and aerogel: In the laboratory and in Wild-2 cometary samples [PDF]
, 2013 Olivine, (Mg, Fe)2[SiO4], is a common mineral in extraterrestrial materials, whose Mg–Fe content varies from the end-members Forsterite (Mg2SiO4: denoted ‘Fo’) to Fayalite (Fe2SiO4: denoted ‘Fa’), together with minor quantities of Ca, Cr, Mn and Ni ...
Wozniakiewicz, Penelope J. +8 more
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Dendritic organization of actin comet tails [PDF]
, 2001 Polymerization of actin filaments is necessary for both protrusion of the leading edge of crawling cells and propulsion of certain intracellular pathogens [1], and it is sufficient for generating force for bacterial motility in vitro [2].
Gary G. Borisy +9 more
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Fine Scale Structure in Cometary Dust Tails [PDF]
, 2022 Cometary dust tails often contain particularly striking fine structure. Unexplained alone by bulk dust properties, features such as the highly notable striae form due to as-yet unconstrained processes.
Price, Oliver Duncan
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Stochastic modeling for the COMET-assay [PDF]
, 2003 We present a stochastic model for single cell gel electrophoresis (COMET-assay) data. Essential is the use of point process structures, renewal theory and reduction to intensity histograms for further data ...
Hösel, V. +4 more
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Observations of a dust tail gap in comet C/2014 Q1 (PanSTARRS) [PDF]
, 2022 Cometary dust tails display a wide array of structures, most believed to be caused by a variable dust production, size distributions, fragmentation processes, and interactions with the solar wind, e.g. Price et al. (2019).
Jones, Geraint H +3 more
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Dust in the Inner Coma of Comet 67P/Churyumov-Gerasimenko [PDF]
, 2021 The main goal of the work presented in this PhD thesis is to investigate the dust dynamics in the near-nucleus coma of comet 67P/Churyumov-Gerasimenko (67P) and to gain a deeper understanding of the physical processes governing it.
Gerig, Selina-Barbara
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