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相关论文: Effect of coronal temperature on the scale of sola…

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Recent observational and numerical studies show a variety of thermal structures in the solar chromosphere. Given that the thermal interplay across the transition region is a key to coronal heating, it is worth investigating how different…

太阳与恒星天体物理 · 物理学 2022-10-26 Haruka Washinoue , Munehito Shoda , Takeru K. Suzuki

In this paper, we present a numerical simulation of an impulsively driven chromospheric jet in the solar atmosphere using the non-ideal magnetohydrodynamic (MHD) equations coupled with frequency- and angle-averaged radiation transport…

太阳与恒星天体物理 · 物理学 2026-05-26 J. J. González-Avilés

We measure the effects of non-isotropic thermal conduction on generation of solar chromospheric jets through numerical simulations carried out with the use of one fluid MHD code MAGNUS. Following the work of Srivastava et al. (2018), we…

太阳与恒星天体物理 · 物理学 2020-11-11 Anamaría Navarro , F. D. Lora-Clavijo K. Murawski , Stefaan Poedts

Using numerical simulations, we study the effects of thermal conduction and radiative cooling on the formation and evolution of solar jets with some macrospicules features. We initially assume that the solar atmosphere is rarely in…

太阳与恒星天体物理 · 物理学 2021-05-12 J. J. González-Avilés , K. Murawski , A. K. Srivastava , T. V. Zaqarashvili , J. A. González-Esparza

Evidence is beginning to be put forward that demonstrates the role of the chromosphere in supplying energy and mass to the corona. We aim to assess the role of chromospheric jets in active region dynamics. Using a combination of the…

太阳与恒星天体物理 · 物理学 2015-06-05 R. J. Morton

Transient collimated plasma eruptions in the solar corona, commonly known as coronal (or X-ray) jets, are among the most interesting manifestations of solar activity. It has been suggested that these events contribute to the mass and energy…

太阳与恒星天体物理 · 物理学 2017-08-09 R. Lionello , T. TÖrÖk , V. S. Titov , J. E. Leake , Z. MikiĆ , J. A. Linker , M. G. Linton

This paper presents a three-dimensional simulation of chromospheric jets with twisted magnetic field lines. Detailed treatments of the photospheric radiative transfer and the equation of states allow us to model realistic thermal convection…

太阳与恒星天体物理 · 物理学 2017-10-18 H. Iijima , T. Yokoyama

Coronal jets are transient, collimated eruptions that occur in regions of predominantly open magnetic field in the solar corona. Our understanding of these events has greatly evolved in recent years but several open questions, such as the…

太阳与恒星天体物理 · 物理学 2015-12-01 T. Torok , R. Lionello , V. S. Titov , J. E. Leake , Z. Mikic , J. A. Linker , M. G. Linton

We model a coronal loop as a three-dimensional magnetic cylinder in a realistic solar atmosphere that extends from the chromosphere to the corona. Kink oscillations, believed ubiquitous in the solar corona, are launched in the loop. Heating…

太阳与恒星天体物理 · 物理学 2023-05-31 Mingzhe Guo , Timothy Duckenfield , Tom Van Doorsselaere , Konstantinos Karampelas , Gabriel Pelouze , Yuhang gao

Coronal jets are the captivating eruptions which are often found in the solar atmosphere, and primarily formed due to magnetic reconnection. Despite their short-lived nature and lower energy compared to many other eruptive events, e.g.…

太阳与恒星天体物理 · 物理学 2024-09-06 Sushree S Nayak , Samrat Sen , Arpit Kumar Shrivastav , R. Bhattacharyya , P. S. Athiray

aims: We aim to provide an estimate of the minimum temperature of the quiet solar chromosphere. methods: We perform a 2D radiation-MHD simulation spanning the upper convection zone to the lower corona. The simulation includes non-LTE…

太阳与恒星天体物理 · 物理学 2015-05-28 Jorrit Leenaarts , Mats Carlsson , Viggo Hansteen , Boris V. Gudiksen

Using numerical simulations, we study the effects of magnetic resistivity and thermal conductivity in the dynamics and properties of solar jets with characteristics of Type II spicules and cool coronal jets. The dynamic evolution of the…

太阳与恒星天体物理 · 物理学 2020-07-15 J. J. González-Avilés , F. S. Guzmán , V. Fedun , G. Verth

Coronal jets represent important manifestations of ubiquitous solar transients, which may be the source of significant mass and energy input to the upper solar atmosphere and the solar wind. While the energy involved in a jet-like event is…

It is extremely difficult to simulate the details of coronal heating and also make meaningful predictions of the emitted radiation. Thus, testing realistic models with observations is a major challenge. Observational signatures of coronal…

太阳与恒星天体物理 · 物理学 2022-11-02 James A. Klimchuk , Kalman J. Knizhnik , Vadim M. Uritsky

It remains unclear which physical processes are responsible for the dramatic increase with height of the temperature in stellar atmospheres, known as the chromospheric ($\sim$10,000 K) and coronal (several million K) heating problems.…

太阳与恒星天体物理 · 物理学 2022-11-17 Souvik Bose , Bart De Pontieu , Viggo Hansteen , Alberto Sainz Dalda , Sabrina Savage , Amy Winebarger

Space-based observations show that the solar atmosphere from the solar chromosphere to the solar corona is filled with small-scale jets and is linked with small-scale explosions. These jets may be produced by mechanisms similar to that of…

太阳与恒星天体物理 · 物理学 2024-02-20 Kunwar Alkendra Pratap Singh , Keisuke Nishida , Kazunari Shibata

In the era of space exploration, the implications of space weather have become increasingly evident. Central to this is the phenomenon of coronal holes, which can significantly influence the functioning of satellites and aircraft. These…

太阳与恒星天体物理 · 物理学 2024-06-24 Juyoung Yun

We studied the acceleration mechanisms of chromospheric jets associated with emerging flux using a two dimensional magnetohydrodynamic (MHD) simulation. We found that slow mode shock waves generated by magnetic reconnection in the…

太阳与恒星天体物理 · 物理学 2015-06-12 Shinsuke Takasao , Hiroaki Isobe , Kazunari Shibata

The effect of temperature inhomogeneity on the periods, their ratios (fundamental vs. first overtone), and the damping times of the standing slow modes in gravitationally stratified solar coronal loops are studied. The effects of optically…

太阳与恒星天体物理 · 物理学 2015-06-05 A. Abedini , H. Safari , S. Nasiri

The distribution of temperature and emission measure in the stationary heated solar atmosphere was obtained for the limiting cases of slow and fast heating, when either the gas pressure or the concentration are constant throughout the layer…

太阳与恒星天体物理 · 物理学 2010-04-16 O. Ptitsyna , B. Somov
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