Results 31 to 40 of about 636,285 (361)
Binary Central Stars of Planetary Nebulae
Galaxies, 2020 It is now clear that a vast majority of intermediate-mass stars have stellar and/or sub-stellar companions, therefore it is no longer appropriate to consider planetary nebulae as a single-star phenomenon, although some single, isolated stars may well ...
David Jones
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Galaxies, 2023 We study radio and X-ray emissions from intermediate-mass black holes (IMBHs) and explore the unified model for accretion and ejection processes. The radio band survey of IMBH (candidate) hosted galaxies indicates that only a small fraction (∼0.6%) of ...
Xiaolong Yang, Jun Yang
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Importance of the nozzle-exit boundary-layer state in subsonic turbulent jets
Journal of Fluid Mechanics, 2018 To investigate the effects of the nozzle-exit conditions on jet flow and sound fields, large-eddy simulations of an isothermal Mach 0.9 jet issued from a convergent-straight nozzle are performed at a diameter-based Reynolds number of $1\times 10^{6 ...
G. Brès +8 more
semanticscholar +1 more source
Physics Letters A, 2011 We discuss time-dependent gravitational fields that "accelerate" free test particles to the speed of light resulting in cosmic double-jet configurations. It turns out that complete gravitational collapse along a spatial axis together with corresponding expansion along the other two axes leads to the accelerated motion of free test particles up and down
Chicone, C., Mashhoon, B., Rosquist, K.
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Aeroacoustic resonance and self-excitation in screeching and impinging supersonic jets – A review
International Journal of Aeroacoustics, 2019 Supersonic jets, particularly shock-containing jets, often exhibit high-intensity, discrete-frequency acoustic tones. These tones are the signature of an aeroacoustic resonance loop established by the flow. This paper considers two of the classical forms
D. Edgington-Mitchell
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Binary Interactions, High-Speed Outflows and Dusty Disks during the AGB-To-PN Transition
Galaxies, 2018 It is widely believed that the dramatic transformation of the spherical outflows of AGB stars into the extreme aspherical geometries seen during the planetary nebula (PN) phase is linked to binarity and driven by the associated production of fast jets ...
Raghvendra Sahai
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Exploring the Magnetic Field Configuration in BL Lac Using GMVA
Galaxies, 2016 The high radio frequency polarization imaging of non-thermal emission from active galactic nuclei (AGN) is a direct way to probe the magnetic field strength and structure in the immediate vicinity of supermassive black holes (SMBHs) and is crucial in ...
Bindu Rani +7 more
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Active aerodynamics control of simplified vehicle body in a crosswind condition
The Journal of Engineering, 2020 In this study, the authors used a steady jet from a slit nozzle to control the bi-stable aerodynamics of a simple vehicle model under crosswind conditions.
Takuji Nakashima +6 more
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Old Testament Essays, 2023 The evil of humanity’s inhumanity to fellow humans via the act of oppression is pervasive across human societies. This evil will continue unabated because of the inherent evil inclination of the benefiting perpetrators.
Joel Kamsen Tihitshak Biwul
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Environmental Sciences Proceedings, 2023 Turbulence is a dominant feature of atmospheric motions. Despite its chaotic nature, it is observed to create and maintain coherent structures such as zonal jets and large-scale waves in the atmosphere.
Evangelos I. Stasinos, Nikolaos A. Bakas
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