Results 181 to 190 of about 1,711 (227)

Rate constants for a reactive system of astrophysical interest: a statistical study of CH₂^.

Phys Chem Chem Phys
González-Lezana T, Konings M, Loreau J, Lique F, Sil M, Faure A.   +5 more
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Supernovae and interstellar gas dynamics

Symposium - International Astronomical Union, 1967
The efficiency of the transfer of energy from supernovae into interstellar cloud motions is investigated. A lower limit of about 0·002 is obtained, but values near 0·01 are more likely. Taking all uncertainties in the theory and observations into account, the energy per supernova, in the form of relativistic particles or high-velocity matter, needed to
F. D. Kahn, L. Woltjer
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Whistlers in interstellar gas dynamics

AIP Conference Proceedings, 2002
Based on equation of electromagnetic induction for the magnetic flux density driven by Hall and Ohmic components of electric field generated by flows of thermal electrons an analytic model of helicoidal magneto-electron waves, whistlers, is developed.
Sergey Bastrukov, Jongmann Yang, Dmitry Podgainy   +2 more
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Thermal Reactivity Dynamics in Interstellar Ice

2018
Ever more complex organic molecules are being observed in space. Star forming regions, planets and small bodies in our solar system exhibit a rich molecular diversity which culminates in the diverse molecular composition of meteorites. While many complex organic molecules can be formed through gas-phase reactions, solid-state chemistry on interstellar ...
Patrice Theulé, Jennifer A. Noble, Pierre Ghesquière   +2 more
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Chemical dynamics in interstellar ice

Proceedings of the International Astronomical Union, 2019
AbstractChemistry in the interstellar medium is generally out-of-equilibrium and as such is kinetically controlled by a set of time-dependent equations, both for gas-phase chemistry and solid-state chemistry. The competition between the different possible reactions will determine toward which complex molecules the chemical network is driven to.
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Dynamical Molecular Regions in Interstellar Clouds

Astrophysics and Space Science, 2003
Work on three problems concerning the chemistry and dynamics of star forming fregions is addressed. Most of the work was done in collaboration with David A. Williams. A chemical model of core D ofTMC-1 is described; it is consistent with that dense core having evolved to its present physical state in the last 105years.
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Dynamics of Interstellar Matter

1975
Three basic equations describe the flow of a fluid. They are the equation of continuity $$ \frac{{\partial \rho }}{{\partial t}} + \bar \nabla \cdot \left( {\rho \bar u} \right) = 0 $$ (1.1) , the equation of motion $$ \frac{{\partial \bar u}}{{\partial t}} + (\bar u \cdot \bar \nabla )\bar u = - \frac{{\bar \nabla P}}{\rho } $$ (1.2)
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Gross Dynamics of the Interstellar Medium

Reviews of Modern Physics, 1958
This paper reviews the many, by now familiar, processes that have at various times been attributed to the interstellar motions, in an effort to piece together some over-all picture of the grosser dynamical relations which might be expected to apply to the motions of the material and electromagnetic fields between the stars.
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Spiral magneto-electron waves in interstellar gas dynamics

Journal of Experimental and Theoretical Physics, 2001
We discuss possible observational consequences resulting from the propagation of transverse magneto-electron waves in the interstellar medium. We briefly describe a magnetohydrodynamic model for the cyclotron waves with emphasis on their analogy with hydrodynamic inertial waves.
S. I. Bastrukov, J. Yang, D. V. Podgainy
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