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Dynamics and Energetics of the Interstellar Medium
1983Some basic tools for the modeling of the dynamical properties of the diffuse interstellar medium are reviewed. First, an overview of fluid mechanics is given. Then, basic phenomena are presented: radiative losses, shocks, ionization fronts, and electron thermal conduction.
Bernard Lazareff, Bernard Lazareff
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The dynamics of the shock disruption of interstellar clouds
Astronomy Reports, 2007The effect of the structural irregularity of an interstellar cloud on the dynamics of its disruption by a shock from a supernova is studied. Irregular clouds are disrupted twice as fast as spherical clouds. However, fragments of irregular clouds preserve their enhanced density for long times without being mixed with the intercloud gas.
Yu. A. Shchekinov, E. E. Matvienko
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Gross Dynamics of the Interstellar Medium
Reviews of Modern Physics, 1958This 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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Dynamics of Interstellar Matter
1975Three 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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Chemical dynamics in interstellar ice
Proceedings of the International Astronomical Union, 2019AbstractChemistry 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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ON THE DYNAMICAL EVOLUTION OF THE FRACTAL STRUCTURE OF INTERSTELLAR MEDIUM
Fractals, 1993Two-dimensional compressible turbulence in a self-gravitating, magnetic interstellar medium is calculated as an initial value problem. It is shown that even if the initial density distribution is homogeneous and the initial velocity distribution contains only a few Fourier components, the nonlinear interaction among the Fourier components will ...
Jürgen Stutzki +5 more
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Thermal Reactivity Dynamics in Interstellar Ice
2018Ever 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 ...
Jennifer A. Noble +2 more
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Dynamics and Equilibrium in the Interstellar Medium
2012This chapter outlines some of the main dynamical processes occurring in the interstellar medium such as the expansion of H II regions, interstellar shock waves, stellar winds, and supernova remnants. The chapter ends with a discussion of the equilibrium of the different phases of the interstellar gas and star formation.
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Dynamics and Cycle of Interstellar H2O and OH Masers
Chinese Physics Letters, 2002We present an improved radiative pumping model for interstellar H2O and OH masers. This overcomes the defects of former radiative models, and is compatible with astronomical conditions. For the regions of strong H2O and OH formation, it is shown that the rotational population is affected by collisions less than by radiation.
Liu Han-Ping +3 more
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Dynamical effects of cosmic rays in the interstellar medium
Astrophysics, 1987In the framework of the diffusion-convection description of galactic cosmic rays, a study is made of their influence on the stability and large-scale dynamics of the interstellar medium in the gravitational field of the stars of the Galaxy. The most unstable modes and also perturbations across the regular magnetic field are investigated.
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