... was replaced by one in which per turbations by the Galactic disc were dominant ( 1921 ), with stellar and occasional molecularcloud perturbations producing occasional enhancements in the comet flux--so-called comet showers--on time scales of 100 to 1000 ...
... With the regular treatment of new types of radiative shocks, such as within molecularclouds, new analyses become necessary. ... In addition, gas in molecularclouds will be shielded from ionising radiation. ...
... By studying the physics of molecularclouds, we hope to learn if and why the ... investigated the nature of the molecularclouds by performing computer simulations ... where streams and `bullets' of ejected gas impact on the ambient molecularclouds ...
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... Smith, M.D., Rosen, A. , 2003, ``The instability of fast shocks in molecularclouds'', Monthly Notices Royal Astronomical Society, 339, 133-147. ...
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