Thermal instability in the interstellar medium
محل انتشار: مجله پژوهش فیزیک ایران، دوره: 2، شماره: 3
سال انتشار: 1379
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 371
فایل این مقاله در 7 صفحه با فرمت PDF قابل دریافت می باشد
- صدور گواهی نمایه سازی
- من نویسنده این مقاله هستم
استخراج به نرم افزارهای پژوهشی:
شناسه ملی سند علمی:
JR_PSI-2-3_006
تاریخ نمایه سازی: 30 دی 1397
چکیده مقاله:
This study demonstrates how thermal structures in the interstellar medium can emerge as a result of thermal instability. For a two-dimensional case, the steady state thermal structures was investigeted and it was shown that a large class of solutions exist. For a one-dimensional case the conductivity was found to be negligible. The effects of local cooling on the thermal instability were explored in some depth. In this case analytical results for time-dependent cooling function were presented, too. We studied nonlinear wave phenomena in thermal fluid systems, with a particular emphasis on presenting analytical results. When conductivity is proportional to temperature, the behavior of thermal waves is soliton like. For șlow thermal waves, approximate analytical results were presented. Extensions of this work are discussed briefly, together with possible astrophysical applications.
کلیدواژه ها:
نویسندگان
j ghanbari
Department of Physics, Ferdowsi University, Mashad, Iran
m shadmehri
Department of Physics, Ferdowsi University, Mashad, Iran