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相关论文: The SynCOM Flow Tracking Challenge

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Solar "magnetic tornadoes" are produced by rotating magnetic field structures that extend from the upper convection zone and the photosphere to the corona of the Sun. Recent studies show that such rotating features are an integral part of…

太阳与恒星天体物理 · 物理学 2017-05-24 Yoshiaki Kato , Sven Wedemeyer

In an attempt to understand the properties of convective energy transport in the solar convection zone, a numerical model has been constructed for turbulent flows in a compressible, radiation-coupled, non-magnetic, gravitationally…

天体物理学 · 物理学 2007-05-23 Yong -Cheol Kim , Peter A. Fox , Sabatino Sofia , Pierre Demarque

With the advent of deep learning for computer vision tasks, the need for accurately labeled data in large volumes is vital for any application. The increasingly available large amounts of solar image data generated by the Solar Dynamic…

计算机视觉与模式识别 · 计算机科学 2020-04-01 Toqi Tahamid Sarker , Juan M. Banda

The next decade will be an exciting period for solar astrophysics, as new ground- and space-based instrumentation will provide unprecedented observations of the solar atmosphere and heliosphere. The synergy between modeling effort and…

Context. The Sun's complex corona is the source of the solar wind and interplanetary magnetic field. While the large scale morphology is well understood, the impact of variations in coronal properties on the scale of a few degrees on…

This paper reviews our growing understanding of the physics behind coronal heating (in open-field regions) and the acceleration of the solar wind. Many new insights have come from the last solar cycle's worth of observations and theoretical…

太阳与恒星天体物理 · 物理学 2010-02-02 Steven R. Cranmer , John L. Kohl , Mari Paz Miralles , Adriaan A. van Ballegooijen

We compare measurements of horizontal flows on the surface of the Sun using helioseismic time--distance inversions and coherent structure tracking of solar granules. Tracking provides 2D horizontal flows on the solar surface, whereas the…

太阳与恒星天体物理 · 物理学 2015-06-15 M. Svanda , Th. Roudier , M. Rieutord , R. Burston , L. Gizon

With the growing number of wind farms over the last decades and the availability of large datasets, research in wind-farm flow modeling - one of the key components in optimizing the design and operation of wind farms - is shifting towards…

流体动力学 · 物理学 2023-04-06 Navid Zehtabiyan-Rezaie , Alexandros Iosifidis , Mahdi Abkar

The Sun's axisymmetric flows, differential rotation and meridional flow, govern the dynamics of the solar magnetic cycle and variety of methods are used to measure these flows, each with its own strengths and weaknesses. Flow measurements…

太阳与恒星天体物理 · 物理学 2021-09-08 Sushant S. Mahajan , David H. Hathaway , Andrés Muñoz-Jaramillo , Petrus C. Martens

Magnetic flux synoptic charts are critical for reliable modeling of the corona and heliosphere. Until now, however, these charts were provided without any estimate of uncertainties. The uncertainties are due to instrumental noise in the…

太阳与恒星天体物理 · 物理学 2015-06-18 L. Bertello , A. A. Pevtsov , G. J. D. Petrie , D. Keys

Investigating the early-stage evolution of an erupting flux rope from the Sun is important to understand the mechanisms of how it looses its stability and its space weather impacts. Our aim is to develop an efficient scheme for tracking the…

太阳与恒星天体物理 · 物理学 2023-09-13 Andreas Wagner , Emilia K. J. Kilpua , Ranadeep Sarkar , Daniel J. Price , Anshu Kumari , Farhad Daei , Jens Pomoell , Stefaan Poedts

Interchange reconnection is thought to play an important role in determining the dynamics and material composition of the slow solar wind that originates from near coronal hole boundaries. To explore the implications of this process we…

太阳与恒星天体物理 · 物理学 2022-07-20 Roger B. Scott , Stephen J. Bradshaw , Mark G. Linton

Estimates of velocities from time series of photospheric and/or chromospheric vector magnetograms can be used to determine fluxes of magnetic energy (the Poynting flux) and helicity across the magnetogram layer, and to provide…

天体物理学 · 物理学 2007-10-03 B. T. Welsch , G. H. Fisher

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

We show how magnetic observations of the Sun can be used in conjunction with an axisymmetric flux-transport solar dynamo model in order to estimate the large-scale meridional circulation throughout the convection zone. Our innovative…

太阳与恒星天体物理 · 物理学 2017-10-06 Ching Pui Hung , Laurène Jouve , Allan Sacha Brun , Alexandre Fournier , Olivier Talagrand

Optical observations of solar corona provide key information on its magnetic geometry. The large-scale open field of the corona plays an important role in shaping the ambient solar wind and constraining the propagation dynamics of the…

太阳与恒星天体物理 · 物理学 2025-06-19 Vadim M. Uritsky , Christopher E. Rura , Cooper Downs , Shaela I. Jones , Charles Nickolos Arge , Nathalia Alzate

The physical processes that heat the solar corona and accelerate the solar wind remain unknown after many years of study. Some have suggested that the wind is driven by waves and turbulence in open magnetic flux tubes, and others have…

太阳与恒星天体物理 · 物理学 2015-05-19 Steven R. Cranmer , Adriaan A. van Ballegooijen

The main challenges in large-scale people tracking are the recognition of people density in a specific area and tracking the people flow path. To address these challenges, we present SenseFlow, a lightweight people tracking system.…

人机交互 · 计算机科学 2016-06-20 Kai Li , Chau Yuen , Salil S. Kanhere , Kun Hu , Wei Zhang , Fan Jiang , Xiang Liu

Space weather at Earth, driven by the solar activity, poses growing risks to satellites around our planet as well as to critical ground-based technological infrastructure. Major space weather contributors are the solar wind and coronal mass…

计算机视觉与模式识别 · 计算机科学 2025-11-14 Daniela Martin , Jinsu Hong , Connor O'Brien , Valmir P Moraes Filho , Jasmine R. Kobayashi , Evangelia Samara , Joseph Gallego

The performance of optical flow algorithms greatly depends on the specifics of the content and the application for which it is used. Existing and well established optical flow datasets are limited to rather particular contents from which…

计算机视觉与模式识别 · 计算机科学 2018-11-20 Gregory Schröder , Tobias Senst , Erik Bochinski , Thomas Sikora