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A local turbulence model is developed to study energy cascades in the heliosheath and outer heliosphere (OH) based on self-consistent two-dimensional fluid simulations. The model describes a partially ionized magnetofluid OH that couples a…

空间物理 · 物理学 2015-05-14 Dastgeer Shaikh , G. P. Zank

The potential difference between a floating emitting surface and the plasma surrounding it has been described by several sheath models, including the space-charge-limited sheath, the electron sheath with high emission current, and the…

等离子体物理 · 物理学 2018-04-04 Brian F. Kraus , Yevgeny Raitses

We simulated the signal due to neutral He atoms, observed by Interstellar Boundary Explorer (IBEX), assuming that charge exchange collisions between neutral He atoms and He+ ions operate everywhere between the heliopause and a distant…

太阳与恒星天体物理 · 物理学 2017-08-16 Maciej Bzowski , Marzena A. Kubiak , Andrzej Czechowski , Jolanta Grygorczuk

This paper provides a detailed description of the latest version of our model of the solar wind (SW) interaction with the local interstellar medium (LISM). This model has already been applied to the analysis of Lyman-alpha absorption…

太阳与恒星天体物理 · 物理学 2015-10-28 Vladislav Izmodenov , Dmitry Alexashov

The expanding molecular ring (EMR) manifests itself as a parallelogram in the position-velocity diagram of spectral line emission from the Central Molecular Zone (CMZ) surrounding the Galacic centre (GC). Using multiwavelength data, we…

The solar wind (SW) is an outflow of the solar coronal plasma, expanding supersonically throughout the heliosphere. SW particles interact by charge exchange with interstellar neutral atoms and on one hand, they modify the distribution of…

太阳与恒星天体物理 · 物理学 2023-07-27 C. Porowski , M. Bzowski , M. Tokumaru

Magnetic flux fills the heliosphere, expands outward from the solar corona, and is fundamentally related to the structure and dynamics of the solar corona and solar wind. Open magnetic flux and the fast wind are thought to originate from…

太阳与恒星天体物理 · 物理学 2026-04-13 Roberto Lionello , Cooper Downs , Emily I. Mason , Jon A. Linker , Pete Riley , Mathew J. Owens

We use an idealized three-dimensional general circulation model to study condensible-rich atmospheres with an ineffective cold trap on slowly rotating tidally locked terrestrial planets. In particular, we show the climate dynamics in a thin…

地球与行星天体物理 · 物理学 2020-10-05 Feng Ding , Raymond T. Pierrehumbert

We investigate the combined effect of rotation and finite chemical potential in the confinement/deconfinement transition of strongly interacting matter. The holographic description consists of a five-dimensional geometry that contains a…

高能物理 - 理论 · 物理学 2025-07-02 Nelson R. F. Braga , Octavio C. Junqueira

We present synthetic Hi and CO observations of a simulation of decaying turbulence in the thermally bistable neutral medium. We first present the simulation, with clouds initially consisting of clustered clumps. Self-gravity causes these…

星系天体物理 · 物理学 2015-08-06 Jonathan S. Heiner , Enrique Vázquez-Semadeni , Javier Ballesteros-Paredes

Complex CME/ICME structures in the solar wind often arising in the heliosphere as a result of interaction between two or more CMEs are very important due to their enhanced geoefficiency, but their modeling is difficult due to lack of…

太阳与恒星天体物理 · 物理学 2025-01-14 Denis Rodkin , Vladislav Lukmanov , Vladimir Slemzin , Igor Chashei

Magnetic helicity is approximately conserved in resistive MHD models. It quantifies the entanglement of the magnetic field within the plasma. The transport and removal of helicity is crucial in both the dynamo in the solar interior and…

太阳与恒星天体物理 · 物理学 2020-03-25 Christopher Prior , Gareth Hawkes , Mitch Berger

A low-pressure magnetized plasma is studied to find the dependency of sheath properties on ion-neutral collisions in presence of an inhomogeneous magnetic field. A self-consistent one-dimensional two-fluid hydrodynamic model is considered,…

等离子体物理 · 物理学 2021-05-04 K. Deka , S. Adhikari , R. Moulick , S. S. Kausik , B. K. Saikia

To shed more light on the nature of the observed Ly{\alpha} absorption during transits of HD 209458b and to quantify the major mechanisms responsible for the production of fast hydrogen atoms (the so called energetic neutral atoms, ENAs)…

An exospheric kinetic solar wind model is interfaced with an observation-driven single fluid magnetohydrodynamic (MHD) model. Initially, a photospheric magnetogram serves as observational input in the fluid approach to extrapolate the…

太阳与恒星天体物理 · 物理学 2017-10-04 Sofia-Paraskevi Moschou , Viviane Pierrard , Rony Keppens , Jens Pomoell

In the heliosphere, especially in the inner heliosheath, mass-, momentum-, and energy loading induced by the ionization of neutral interstellar species plays an important, but for some species, especially Helium, an underestimated role. We…

太阳与恒星天体物理 · 物理学 2015-09-16 K. Scherer , H. Fichtner , H. -J. Fahr , M. Bzowski , S. E. S. Ferreira

In this paper we generalise our previous results [1] concerning scattering on the exterior of collapsing dust clouds to the charged case, including in particular the extremal case. We analyse the energy boundedness of solutions $\phi$ to…

广义相对论与量子宇宙学 · 物理学 2023-09-07 Frederick Alford

Interstellar hydrogen atoms (H atoms) penetrate into the heliosphere through the region of the solar wind interaction with the interstellar plasma due to their large mean free path. Resonant charge exchange of H atoms with protons has been…

太阳与恒星天体物理 · 物理学 2025-04-22 A. V. Titova , V. V. Izmodenov , S. D. Korolkov

Realistic models of magnetic reconnection in the solar chromosphere must take into account that the plasma is partially ionized and that plasma conditions within any two magnetic flux bundles undergoing reconnection may not be the same.…

太阳与恒星天体物理 · 物理学 2015-06-03 Nicholas A. Murphy , Vyacheslav S. Lukin

We have studied structure formation in a confined block copolymer melt by means of dynamic density functional theory (DDFT). The confinement is two-dimensional, and the confined geometry is that of a cylindrical nanopore. Although the…

软凝聚态物质 · 物理学 2009-11-13 G. J. A. Sevink , A. V. Zvelindovsky