Results 31 to 40 of about 89,600 (153)
Rotation State of Comet 103P/Hartley 2 from Radio Spectroscopy at 1 mm [PDF]
, 2011 The nuclei of active comets emit molecules anisotropically from discrete vents. As the nucleus rotates, we expect to observe periodic variability in the molecular emission line profiles, which can be studied through mm/submm spectroscopy.
A'Hearn +9 more
core +2 more sources
Streaming clumps ejection model and the heterogeneous inner coma of Comet Wild 2 [PDF]
, 2004 It is modeled that a significant component of the jets of some comets are released as aggregate clumps, which then fragment and shed particles after release, leading to a heterogeneous innermost ...
Clark, B. C. +4 more
core
Hall Effect in the coma of 67P/Churyumov-Gerasimenko [PDF]
, 2018 Magnetohydrodynamics simulations have been carried out in studying the solar wind and cometary plasma interactions for decades. Various plasma boundaries have been simulated and compared well with observations for comet 1P/Halley.
Altwegg, K. +10 more
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The Chemical Record, Volume 25, Issue 7, July 2025.The radical Pietist Johann Conrad Dippel was a self‐proclaimed adept – a maker of gold and the philosophers’ stone. He was also a magister of theology, a doctor of medicine, and a self‐taught chemist, who coinvented the pigment Prussian Blue together with Johann von Diesbach, became known for his animal pyrolysis oil, his wonder‐wound balm, his ...
Curt Wentrup
wiley +1 more source
Journal of Geophysical Research: Space Physics, Volume 130, Issue 5, May 2025.Abstract We analyze five large‐scale tail disturbances in comet C/2022 E3 (ZTF)'s ion tail using images from astrophotographers, tracking specific features within the tail to determine their speeds. We employ a heliosphere model to estimate when the comet crossed the heliospheric current sheet (HCS).
A. Wellbrock, G. H. Jones
wiley +1 more source
Maty's Biography of Abraham De Moivre, Translated, Annotated and Augmented
, 2007 November 27, 2004, marked the 250th anniversary of the death of Abraham De Moivre, best known in statistical circles for his famous large-sample approximation to the binomial distribution, whose generalization is now referred to as the Central Limit ...
Bellhouse, David R., Genest, Christian
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Helium in Mercury's Extended Exosphere Determined by Pick‐Up Generated Ion Cyclotron Waves
Journal of Geophysical Research: Planets, Volume 130, Issue 4, April 2025.Abstract Helium (He) was first detected by remote spectroscopic observations of the Ultraviolet Visible Spectrometers (UVVS) instrument in Mercury's exosphere during the three Mariner 10 flybys in 1974 and 1975. Here, we derive the first in situ radial density profile of He in Mercury's extended exosphere by analyzing magnetic field and plasma ...
F. Weichbold +8 more
wiley +1 more source
Precession of a Freely Rotating Rigid Body. Inelastic Relaxation in the Vicinity of Poles [PDF]
, 1999 When a solid body is freely rotating at an angular velocity ${\bf \Omega}$, the ellipsoid of constant angular momentum, in the space $\Omega_1, \Omega_2, \Omega_3$, has poles corresponding to spinning about the minimal-inertia and maximal-inertia axes ...
Asphaug E. +27 more
core +2 more sources
Ion‐Scale Characteristics of the Martian Magnetic Pile‐Up Boundary Layer
Geophysical Research Letters, Volume 52, Issue 3, 16 February 2025.Abstract The Martian magnetic pile‐up boundary (MPB) delineates the interface between the magnetosheath and the induced magnetosphere, but its global ion‐scale characteristics remaining unclear. Utilizing a three‐dimensional Hall magnetohydrodynamic (MHD) model, this study aims to reveal the features of the MPB layer, including magnetic field, current ...
Shibang Li +12 more
wiley +1 more source
Organic matter in comets and cometary dust [PDF]
, 2010 Comets are primitive conglomerates of the solar system containing a mixture of frozen gases, refractory grains, and carbonaceous particles rich in biogenic elements.
Jordi Llorca
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