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相关论文: Macrospicules and Their Connection to Magnetic Rec…

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Context. Small-scale bright features in the photosphere of the Sun, such as faculae or G-band bright points, appear in connection with small-scale magnetic flux concentrations. Aims. Here we report on a new class of photospheric bright…

太阳与恒星天体物理 · 物理学 2016-12-14 Flavio Calvo , Oskar Steiner , Bernd Freytag

Spicules are the most ubuiquitous type of jets in the solar atmosphere. The advent of high-resolution imaging and spectroscopy from the Interface Region Imaging Spectrograph (IRIS) and ground-based observatories has revealed the presence of…

太阳与恒星天体物理 · 物理学 2017-11-01 Bart De Pontieu , Juan Martinez-Sykora , Georgios Chintzoglou

Context: Many previous studies have shown that the magnetic precursor of a coronal mass ejection (CME) takes the form of a magnetic flux rope, and a subset of them have become known as `hot flux ropes' due to their emission signatures in…

太阳与恒星天体物理 · 物理学 2021-01-04 Alexander W James , Lucie M Green , Lidia van Driel-Gesztelyi , Gherardo Valori

Transient collimated plasma ejections (jets) occur frequently throughout the solar corona, in active regions, quiet Sun, and coronal holes. Although magnetic reconnection is generally agreed to be the mechanism of energy release in jets,…

太阳与恒星天体物理 · 物理学 2019-11-13 Pankaj Kumar , Judith T. Karpen , Spiro K. Antiochos , Peter F. Wyper , C. Richard DeVore

A broad variety of observational methods allows us to see the effect of magnetic reconnection in high-temperature strongly-magnetized plasma of the solar corona. Some specific features of the large-scale reconnection in large solar flares…

太阳与恒星天体物理 · 物理学 2011-02-23 B. V. Somov , S. I. Bezrodnykh , L. S. Ledentsov

State-of-the-art solar instrumentation is revealing magnetic activity of the Sun with unprecedented resolution. Observations with the 1.6m New Solar Telescope of the Big Bear Solar Observatory are making next steps in our understanding of…

太阳与恒星天体物理 · 物理学 2015-06-19 Santiago Vargas Dominguez , Alexander Kosovichev , Vasyl Yurchyshyn

Magnetic reconnection is a rapid energy release process that is believed to be responsible for flares on the Sun and stars. Nevertheless, such flare-related reconnection is mostly detected to occur in the corona, while there have been few…

太阳与恒星天体物理 · 物理学 2016-03-21 Jie Hong , M. D. Ding , Ying Li , Kai Yang , Xin Cheng , Feng Chen , Cheng Fang , Wenda Cao

Microstreams are fluctuations in the solar wind speed and density associated with polarity-reversing folds in the magnetic field (also denoted switchbacks). Despite their long heritage, the origin of these microstreams/switchbacks remains…

We used \ha-0.1 nm and magnetic field (at 1.56$\mu$) data obtained with the New Solar Telescope to study the origin of the disk counterparts to type II spicules, so-called rapid blueshifted excursions (RBEs). The high time cadence of our…

太阳与恒星天体物理 · 物理学 2014-04-30 Vasyl Yurchyshyn , Valentyna Abramenko , Phil Goode

Jet phenomena with a bright loop in their footpoint, called anemone jets, have been observed in the solar corona and chromosphere. These jets are formed as a consequence of magnetic reconnection, and from the scale universality of…

太阳与恒星天体物理 · 物理学 2020-07-22 Yuji Kotani , Kazunari Shibata

Recent space based observations of the Sun revealed that magnetic reconnection is ubiquitous in the solar atmosphere, ranging from small scale reconnection (observed as nanoflares) to large scale one (observed as long duration flares or…

太阳与恒星天体物理 · 物理学 2016-07-01 Kazunari Shibata , Shinsuke Takasao

Parker Solar Probe's first encounters with the Sun revealed the presence of ubiquitous localised magnetic deflections in the inner heliosphere; these structures, often called switchbacks, are particularly striking in solar wind streams…

Recent studies suggest that the magnetic switchbacks (SBs) detected by the Parker Solar Probe (PSP) carry information on the scales of solar supergranulation (large scale) and granulation (medium scale). We test this claim using…

太阳与恒星天体物理 · 物理学 2025-07-18 Jeongwoo Lee , Vasyl Yurchyshyn , Haimin Wang , Xu Yang , Wenda Cao , Juan Carlos Martinez Oliveros

Microflares, one of small-scale solar activities, are believed to be caused by magnetic reconnection. Nevertheless, their three-dimensional (3D) magnetic structures, thermodynamic structures, and physical links to the reconnection have been…

太阳与恒星天体物理 · 物理学 2022-05-18 Z. F. Li , X. Cheng , F. Chen , J. Chen , M. D. Ding

Magnetic reconnection plays a crucial role in large dissipative events in space plasmas, such as solar flares and geomagnetic substorms, but there has been much confusion regarding reconnection onset responsible for the explosive events.…

空间物理 · 物理学 2019-02-06 M. Ugai

We present EUV solar observations showing evidence for omnipresent jetting activity driven by small-scale magnetic reconnection at the base of the solar corona. We argue that the physical mechanism that heats and drives the solar wind at…

The interaction between emerging magnetic flux and the pre-existing ambient field has become a "hot" topic for both numerical simulations and high-resolution observations of the solar atmosphere. The appearance of brightenings and surges…

太阳与恒星天体物理 · 物理学 2015-05-19 S. L. Guglielmino , L. R. Bellot Rubio , F. Zuccarello , G. Aulanier , S. Vargas Domínguez , S. Kamio

We investigated three fan-shaped jets observed above sunspot light bridges or nearby sunspot regions. The study aimed to explore the dynamics and physical properties of jets' features that appear as blob-like structures at the tips of the…

太阳与恒星天体物理 · 物理学 2025-07-24 Heesu Yang , Maria S. Madjarska , EunKyung Lim , Daniel Nóbrega-Siverio , Klaus Galsgaard

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…

太阳与恒星天体物理 · 物理学 2009-08-11 L. Heggland , B. De Pontieu , V. H. Hansteen

Context: Hot coronal jets are a basic observed feature of the solar atmosphere whose physical origin is still being actively debated. Aims: We study six recurrent jets occurring in the active region NOAA 12644 on April 04, 2017. They are…