On the generation of magnetosheath high‒speed jets by bow shock ripples

On the generation of magnetosheath high-speed jets by bow shock ripples

[1]The terrestrial magnetosheath is embedded with coherent high-speed jets of about 1RE in scale, predominantly during quasi-radial interplanetary magnetic field (IMF). When these high dynamic pressure (Pdyn) jets hit the magnetopause, they cause large indentations and further magnetospheric effects. The source of these jets has remained controversial. One of the proposed mechanisms is based on...

Energetic Electrons in the Magnetosheath and Upstream of the Bow Shock

The characteristics and transport of >200 keV electrons upstream of Earth's bow shock and in the outer magnetosheath are studied using nearly 4 years of data from the California Institute of Technology Electron/Isotope Spectrometer aboard IMP 8. In the upstream region, elevated electron intensities ranging from near the background level -•0.1 (cm 2 s sr) -• up to -•100 (cm 2 s sr) -• are observ...

Alfvén vortex filaments observed in magnetosheath downstream of a quasi-perpendicular bow shock

Mhd Turbulence in Saturn's Magnetosheath Downstream of a Quasi Parallel Bow Shock

The origin of the MHD turbulence downstream of a quasi parallel shock is investigated using plasma and magnetic eld data taken by Voyagers 1 and 2 during their outbound traversals of the Saturn's magnetosheath. The characteristics of the waves observed in that region are compared with those of the waves present: (i) downstream of a quasi perpendicular shock; (ii) in the foreshock. The last comp...

investigation of effective parameters on the rigidity of light composite diaphragms (psscb) by fem

در این رساله با معرفی سقف های psscb متشکل از ترکیب ورق های فولادی ذوزنقه ای و تخته های سیمانی الیافی به عنوان سقف های پیش ساخته (سازگار با سیستم سازه ای قاب های فولادی سبک) به بررسی پارامترهای موثر بر صلبیت سقف، پرداخته می شود. در تحقیق حاضر ابتدا به مدل سازی دو نمونه سقف آزمایش شده، به روش اجزاء محدود با استفاده از نرم افزار تحلیلی abaqus ver 6.10 پرداخته شده است. نمونه های ساخته شده تحت اعما...