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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

Explosive events are small transition region phenomena characterised by broad non-Gaussian wings in their line profiles. Images from the Solar Dynamics Observatory (SDO) give a first view of the plasma dynamics at the sites of explosive…

太阳与恒星天体物理 · 物理学 2015-06-11 Davina Innes , Luca Teriaca

We follow two small, magnetically isolated CME-producing solar active regions (ARs) from the time of their emergence until several days later, when their core regions erupt to produce the CMEs. In both cases, magnetograms show: (a)…

太阳与恒星天体物理 · 物理学 2018-09-05 Alphonse C. Sterling , Ronald L. Moore , Navdeep K. Panesar

Low-mass black hole X-ray Binaries (LMXBs) undergo outbursts, during which their brightness increases greatly for timescales of months. The X-ray accretion and radio jet properties change dramatically throughout an outburst in a broadly…

高能天体物理现象 · 物理学 2025-11-17 Eric Davidson , Jaiverdhan Chauhan , Anne Lohfink , Thomas D. Russell , Rhaana Starling , Charlotte Johnson

We report the smallest coronal jets ever observed in the quiet Sun with recent high resolution observations from the High Resolution Telescopes (HRI-EUV and HRI-Ly{\alpha}) of the Extreme Ultraviolet Imager (EUI) onboard Solar Orbiter. In…

太阳与恒星天体物理 · 物理学 2021-09-29 Zhenyong Hou , Hui Tian , David Berghmans , Hechao Chen , Luca Teriaca , Udo Schuhle , Yuhang Gao , Yajie Chen , Jiansen He , Linghua Wang , Xianyong Bai

Coronal mass ejections (CMEs) are often accompanied by coronal dimming evident in extreme ultraviolet (EUV) and soft X-ray observations. The locations of dimming are sometimes considered to map footpoints of the erupting flux rope. As the…

太阳与恒星天体物理 · 物理学 2016-07-06 J. X. Cheng , J. Qiu

Solar active region jets are small-scale collimated plasma eruptions that are triggered from magnetic sites embedded in sunspot penumbral regions. Multiple trigger mechanisms for recurrent jets are under debate. Vector magnetic field data…

太阳与恒星天体物理 · 物理学 2020-03-16 Alin Razvan Paraschiv , Alina Donea , K. D. Leka

Coronal mass ejections (CMEs) play a decisive role in driving space weather, especially, the fast ones (e.g., with speeds above $800$~km~s$^{-1}$). Understanding the trigger mechanisms of fast CMEs can help us gaining important information…

太阳与恒星天体物理 · 物理学 2019-11-06 Peng Zou , Chaowei Jiang , Fengsi Wei , Pingbing Zuo , Yi Wang

We review recent work on 111 Fe-rich impulsive solar energetic ($\sim$ 3 MeV/nuc) particle (SEP) events observed from 1994 to 2013. Strong elemental abundance enhancements scale with A/Q, the ion mass-to-charge ratio, as (A/Q)$^{\alpha}$,…

太阳与恒星天体物理 · 物理学 2015-10-01 Stephen Kahler , Donald Reames , Edward Cliver

Using high spatial and temporal data from the New Vacuum Solar Telescope (NVST) and the Solar Dynamics Observatory (SDO), we present unambiguous observations of recurrent two-sided loop jets caused by magnetic reconnection between erupting…

太阳与恒星天体物理 · 物理学 2020-01-08 Bo Yang , Jiayan Yang , Yi Bi , Zhe Xu , Junchao Hong , Haidong Li , Hechao Chen

The Sun's atmosphere is frequently disrupted by coronal mass ejections (CMEs), coupled with flares and energetic particles. In the standard picture, the coupling is explained by magnetic reconnection at a vertical current sheet connecting…

太阳与恒星天体物理 · 物理学 2019-03-11 Tingyu Gou , Rui Liu , Bernhard Kliem , Yuming Wang , Astrid M. Veronig

We present observations and modeling results of the propagation and impact at Earth of a high-latitude, extended filament channel eruption that commenced on 2015 July 9. The coronal mass ejection (CME) that resulted from the filament…

Black hole (BH) accretion disks are often coupled to ultramagnetized and tenuous plasma coronae close to their central BHs. The coronal magnetic field can exchange energy between the disk and the BH, power X-ray emission, and lead to jetted…

高能天体物理现象 · 物理学 2025-09-10 J. Mehlhaff , B. Cerutti , B. Crinquand

Jets are dynamic, impulsive, well-collimated plasma events that develop at many different scales and in different layers of the solar atmosphere. Jets are believed to be induced by magnetic reconnection, a process central to many…

太阳与恒星天体物理 · 物理学 2016-11-30 E. Pariat , K. Dalmasse , C. R. DeVore , S. K. Antiochos , J. T. Karpen

Small 3He-rich solar energetic particle (SEP) events have been commonly associated with extreme-ultraviolet (EUV) jets and narrow coronal mass ejections (CMEs) which are believed to be the signatures of magnetic reconnection involving field…

太阳与恒星天体物理 · 物理学 2016-12-14 Radoslav Bucik , Davina E. Innes , Glenn M. Mason , Mark E. Wiedenbeck

Recent discoveries have revealed exoplanets orbiting young Sun-like stars, offering a window into the early solar system. These young stars frequently produce extreme magnetic explosions known as superflares, roughly once a day, potentially…

太阳与恒星天体物理 · 物理学 2025-10-28 Kosuke Namekata

Recent IRIS observations have revealed a prevalence of intermittent small-scale jets with apparent speeds of 80 - 250 km s$^{-1}$, emanating from small-scale bright regions inside network boundaries of coronal holes. We find that these…

太阳与恒星天体物理 · 物理学 2016-04-22 Nancy Narang , Rebecca T. Arbacher , Hui Tian , Dipankar Banerjee , Steven R. Cranmer , Ed E. DeLuca , Sean McKillop

Using the observations from the Optical and Near-infrared Solar Eruption Tracer and the Solar Dynamics Observatory, we study an M5.7 flare in AR 11476 on 2012 May 10 and a micro-flare in the quiet Sun on 2017 March 23. Before the onset of…

太阳与恒星天体物理 · 物理学 2018-07-04 Shuhong Yang , Jun Zhang

Using multi-wavelength imaging observations, in EUV, white light and radio, and radio spectral data over a large frequency range, we analyzed the triggering and development of a complex eruptive event. This one includes two components, an…

太阳与恒星天体物理 · 物理学 2015-06-22 Pietro Zucca , Monique Pick , Pascal Demoulin , Alain Kerdraon , Alain Lecacheux , Peter T. Gallagher

Recent studies have revealed that solar jets involving minifilament eruptions may be initiated under the well-known magnetic-breakout mechanism. Before or just at the onset of those jets, there should be a current sheet, where breakout…

太阳与恒星天体物理 · 物理学 2019-04-10 Junchao Hong , Jiayan Yang , Huadong Chen , Yi Bi , Bo Yang , Hechao Chen
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