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相关论文: SynCOM: An Empirical Model for High-Resolution Sim…

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Understanding solar wind flows is crucial for unraveling the dynamics of the Sun's corona and improving space weather forecasting. However, the complex nature of the solar wind and the absence of reliable ground-truth data present…

太阳与恒星天体物理 · 物理学 2024-10-04 Valmir Moraes Filho , Vadim Uritsy , Barbara Thompson

SynCOM is a package of procedures written in IDL (Interactive Data Language) that simulates transient solar wind flows. Each function within SynCOM handles specific tasks, such as initializing parameters, generating synthetic profiles,…

太阳与恒星天体物理 · 物理学 2024-10-03 Valmir Moraes Filho , Vadim Uritsky , Barbara Thompson , Sarah Gibson , Craig DeForest

The role of small-scale coronal eruptive phenomena in the generation and heating of the solar wind remains an open question. Here, we investigate the role played by coronal jets in forming the solar wind by testing whether temporal…

太阳与恒星天体物理 · 物理学 2021-04-28 Diego de Pablos , David M. Long , Christopher J. Owen , Gherardo Valori , Georgios Nicolaou , Louise K. Harra

Given a known radial magnetic field distribution on the Sun's photospheric surface, there exist well-established methods for computing a potential magnetic field in the corona above. Such potential fields are routinely used as input to…

太阳与恒星天体物理 · 物理学 2021-12-22 Oliver E. K. Rice , Anthony R. Yeates

SiRGraF Integrated Tool for Coronal dynaMics (SITCoM) is based on Simple Radial Gradient Filter (SiRGraF) used to filter the radial gradient in the white-light coronagraph images and bring out dynamic structures. SITCoM has been developed…

太阳与恒星天体物理 · 物理学 2023-08-10 Purvi Udhwani , Arpit Kumar Shrivastav , Ritesh Patel

Coronal pseudostreamer flux systems have a specific magnetic configuration that influences the morphology and evolution of coronal mass ejections (CMEs) from these regions. Here we continue the analysis of the Wyper et al. (2024, ApJ 975,…

We present a method to derive outflow velocities in the solar corona using different data sets including solar wind mass flux coming from the SWAN/SOHO instrument, electron density values from LASCO-C2 and interplanetary solar wind…

天体物理学 · 物理学 2009-11-13 E. Quemerais , R. Lallement , D. Koutroumpa , P. Lamy

Normal-mode coupling is a helioseismic technique that uses measurements of mode eigenfunctions to infer the interior structure of the Sun. This technique has led to insights into the evolution and structure of toroidal flows in the solar…

太阳与恒星天体物理 · 物理学 2020-08-21 Prasad Subramanian , Shravan Hanasoge

We consider the problem of automatically (and robustly) isolating and extracting information about waves and oscillations observed in EUV image sequences of the solar corona with a view to near real-time application to data from the…

天体物理学 · 物理学 2009-11-13 Scott W. McIntosh , Bart De Pontieu , Steven Tomczyk

Determining the mechanisms responsible for the heating of the coronal plasma and maintaining and accelerating the solar wind are long standing goals in solar physics. There is a clear need to constrain the energy, mass and momentum flux…

太阳与恒星天体物理 · 物理学 2016-11-21 R. J. Morton , E. Scullion , D. S. Bloomfield , J. A. McLaughlin , S. Regnier , S. W. McIntosh , S. Tomczyk , P. Young

With the use of our JOANNA code, which solves radiative equations for ion + electron and neutral fluids, we perform realistic 2.5D numerical simulations of plasma outflows associated with the solar granulation. These outflows exhibit…

太阳与恒星天体物理 · 物理学 2019-11-06 D. Wójcik , B. Kuźma , K. Murawski , A. K. Srivastava

In-situ measurements of the solar wind, a turbulent and anisotropic plasma flow originating at the Sun, are mostly carried out by single spacecraft, resulting in one-dimensional time series. The conversion of these measurements to the…

太阳与恒星天体物理 · 物理学 2024-05-22 Norbert Magyar , Jaye Verniero , Adam Szabo , Jiyuan Zhang , Tom Van Doorsselaere

Macroscopic wave and oscillatory phenomena ubiquitously detected in the plasma of the corona of the Sun are interpreted in terms of magnetohydrodynamic theory. Fast and slow magnetoacoustic waves are clearly distinguished in observations.…

太阳与恒星天体物理 · 物理学 2024-04-02 Valery M. Nakariakov , Sihui Zhong , Dmitrii Y. Kolotkov , Rebecca L. Meadowcroft , Yu Zhong , Ding Yuan

The solar interior is filled with turbulent thermal convection, which plays a key role in the energy and momentum transport and the generation of the magnetic field. The turbulent flows in the solar interior cannot be optically detected due…

太阳与恒星天体物理 · 物理学 2024-10-10 Hiroyuki Masaki , Hideyuki Hotta

We present a method for performing data-driven simulations of solar active region formation and evolution. The approach is based on magnetofriction, which evolves the induction equation assuming the plasma velocity is proportional to the…

太阳与恒星天体物理 · 物理学 2015-06-11 Mark C. M. Cheung , Marc L. DeRosa

Accurate measurements of deep solar meridional flow are of vital interest for understanding the solar dynamo. In this paper, we validate a recently developed method for obtaining sensitivity functions (kernels) for travel-time measurements…

太阳与恒星天体物理 · 物理学 2017-04-19 Vincent G. A. Böning , Markus Roth , Jason Jackiewicz , Shukur Kholikov

A hot corona is suggested to be above the standard thin disk. The anisotropy of hard X-ray emission in radio-quiet active galactic nuclei implies that the corona is not static and probably moves outwards like winds. We perform…

高能天体物理现象 · 物理学 2019-08-14 Xiao-Hong Yang , De-Fu Bu , Qi-Xiu Li

The periodic coronal rain and in-phase radiative intensity pulsations have been observed in multiple wavelengths in recent years. However, due to the lack of three-dimensional coronal magnetic fields and thermodynamic data in observations,…

太阳与恒星天体物理 · 物理学 2024-09-02 Zekun Lu , Feng Chen , J. H. Guo , M. D. Ding , Can Wang , Haocheng Yu , Y. W. Ni , Chun Xia

Radio observations grant access to a wide range of physical processes through different emission mechanisms. These processes range from thermal and quiescent to eruptive phenomena, such as shock waves and particle beams. We present a new…

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