کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8190031 | 1528851 | 2012 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Cosmological two-stream instability
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک هسته ای و انرژی بالا
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
Two-stream instability requires, essentially, two things to operate: a relative flow between two fluids and some type of interaction between them. In this Letter we provide the first demonstration that this mechanism may be active in a cosmological context. Building on a recently developed formalism for cosmological models with two, interpenetrating fluids with a relative flow between them, we show that two-stream instability may be triggered during the transition from one fluid domination to the other. We also demonstrate that the cosmological expansion eventually shuts down the instability by driving to zero the relative flow and the coupling between the two fluids.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters B - Volume 715, Issues 4â5, 10 September 2012, Pages 289-292
Journal: Physics Letters B - Volume 715, Issues 4â5, 10 September 2012, Pages 289-292
نویسندگان
G.L. Comer, P. Peter, N. Andersson,