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Related papers: Numerical Simulations of Shock Wave-Driven Jets

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We present the results of numerical simulations of wave-induced magnetic reconnection in a model of the solar atmosphere. In the magnetic field geometry we study in this article, the waves, driven by a monochromatic piston and a driver…

Solar and Stellar Astrophysics · Physics 2009-08-11 L. Heggland , B. De Pontieu , V. H. Hansteen

In the solar atmosphere, jets are prevalent and they are significant for the mass and energy transport. Here we conduct numerical simulations to investigate the mass and energy contributions of the recently observed high-speed jets to the…

Solar and Stellar Astrophysics · Physics 2016-08-24 Liping Yang , Jiansen He , Hardi Peter , Chuanyi Tu , Lei Zhang , Eckart Marsch , Linghua Wang , Xueshang Feng

We perform state-of-the-art, 3D, time-dependent simulations of magnetized disk winds, carried out to simulation scales of 60 Astronomical Units, in order to confront optical HST observations of protostellar jets. We ``observe'' the optical…

Solar and Stellar Astrophysics · Physics 2015-05-19 Jan Staff , Brian Niebergal , Rachid Ouyed , Ralph Pudritz , Kai Cai

Numerical simulation of high-speed turbulent water jets in air and its validation with experimental data has not been reported in the literature. It is therefore aimed to simulate the physics of these high-speed water jets and compare the…

Fluid Dynamics · Physics 2010-03-23 Anirban Guha , Ronald M. Barron , Ram Balachandar

We present the results of numerical simulations of wave propagation and jet formation in solar atmosphere models with different magnetic field configurations. The presence in the chromosphere of waves with periods longer than the acoustic…

Solar and Stellar Astrophysics · Physics 2011-12-05 L. Heggland , V. H. Hansteen , B. De Pontieu , M. Carlsson

The solar atmosphere is full of complicated transients manifesting the reconfiguration of solar magnetic field and plasma. Solar jets represent collimated, beam-like plasma ejections; they are ubiquitous in the solar atmosphere and…

Solar and Stellar Astrophysics · Physics 2021-02-09 Yuandeng Shen

We study the formation and evolution of jets in the solar atmosphere using numerical simulations of partially ionized plasma. The two-fluid magnetohydrodynamic equations with ion+electron and neutral hydrogen components are used in…

Solar and Stellar Astrophysics · Physics 2022-08-19 J. J. González-Avilés , K. Murawski , T. V. Zaqarashvili

Studies of spicules and similar solar jets reveal a strong correlation between some of the kinematic variables, particularly between the initial velocity V, and the subsequent deceleration, a. It has been proposed that there is a linear…

Solar and Stellar Astrophysics · Physics 2019-11-04 Leonard A Freeman

The results of MHD numerical simulations of the formation and development of magnetized jets are presented. Similarity criteria for comparisons of the results of laboratory laser experiments and numerical simulations of astrophysical jets…

High Energy Astrophysical Phenomena · Physics 2019-03-20 V. S. Belyaev , G. S. Bisnovatyi-Kogan , A. I. Gromov , B. V. Zagreev , A. V. Lobanov , A. P. Matafonov , S. G. Moiseenko , O. D. Toropina

We investigate the effect of coronal temperature on the formation process of solar chromospheric jets using two-dimensional magnetohydrodynamic simulations of the region from the upper convection zone to the lower corona. We develop a new…

Solar and Stellar Astrophysics · Physics 2015-10-28 H. Iijima , T. Yokoyama

We review the state of the art of three dimensional numerical simulations of solar and stellar dynamos. We summarize fundamental constraints of numerical modelling and the techniques to alleviate these restrictions. Brief summary of the…

Solar and Stellar Astrophysics · Physics 2023-05-29 Petri J. Käpylä , Matthew K. Browning , Allan Sacha Brun , Gustavo Guerrero , Jörn Warnecke

High velocity jets are among the most prominent features of a wide class of planetary nebulae, but their origins are not understood. Several different types of physical model have been suggested to power the jets, but there is no consensus…

Solar and Stellar Astrophysics · Physics 2015-05-30 P. J. Huggins

Extreme-ultraviolet and X-ray jets occur frequently in magnetically open coronal holes on the Sun, especially at high solar latitudes. Some of these jets are observed by white-light coronagraphs as they propagate through the outer corona…

Solar and Stellar Astrophysics · Physics 2017-03-15 Vadim M. Uritsky , Merrill A. Roberts , C. Richard DeVore , Judith T. Karpen

The connection between collimation and acceleration of magnetized relativistic jets is discussed. The focus is on recent numerical simulations which shed light on some longstanding problems.

High Energy Astrophysical Phenomena · Physics 2010-01-12 Ramesh Narayan , Alexander Tchekhovskoy , Jonathan C. McKinney

Magnetic field modifies the properties of waves in a complex way. Significant advances has been made recently in our understanding of the physics of waves in solar active regions with the help of analytical theories, numerical simulations,…

Astrophysics · Physics 2008-12-02 Elena Khomenko

We present the results of a three-dimensional, relativistic, hydrodynamic simulation of a precessing jet into which a compact blob of matter is injected. A comparison of synthetic radio maps computed from the hydrodynamic model, taking into…

Recent observations as well as theoretical studies of YSO jets suggest the presence of two steady components: a disk wind type outflow needed to explain the observed high mass loss rates and a stellar wind type outflow probably accounting…

Astrophysics of Galaxies · Physics 2015-05-13 T. Matsakos , S. Massaglia , E. Trussoni , K. Tsinganos , N. Vlahakis , C. Sauty , A. Mignone

Jupiter and Saturn exhibit alternating east-west jet streams as seen from surface. The origin of these zonal flows has been debated for decades. The high-precision gravity measurements by Juno mission and the grand finale of Cassini mission…

Earth and Planetary Astrophysics · Physics 2024-08-06 Shanshan Xue , Yufeng Lin

Wind affects the stability and maneuverability of UAVs, which can be particularly dangerous when operating near obstacles or each other. In order to test the effectiveness of formation control laws and the impact of windy environments on…

Optimization and Control · Mathematics 2019-05-27 Kenan Cole , Adam Wickenheiser

Investigation of propagation, conversion, and scattering of MHD waves in the Sun is very important for understanding the mechanisms of observed oscillations and waves in sunspots and active regions. We have developed 3D linear MHD numerical…

Astrophysics · Physics 2011-02-11 K. V. Parchevsky , A. G. Kosovichev
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