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We observed three recurrent blowout jets in an active regio with Atmospheric Imaging Assembly (AIA) aboard the Solar Dynamics Observatory (SDO). Using Helioseismic Magnetic Imager (HMI) data. We found that the magnetic flux of an emerging…

太阳与恒星天体物理 · 物理学 2025-04-16 Chang Zhou , Yang Guo , Guoyin Chen , Ye Qiu , M. D. Ding

In the solar atmosphere, the jets are ubiquitous and found to be at various spatia-temporal scales. They are significant to understand energy and mass transport in the solar atmosphere. Recently, the high-speed transition region jets are…

太阳与恒星天体物理 · 物理学 2016-08-24 Liping Yang , Hardi Peter , Jiansen He , Chuanyi Tu , Linghua Wang , Lei Zhang , Xueshang Feng

We study the formation of coronal jets through numerical simulation of the emergence of a twisted magnetic flux rope into a pre-existing open magnetic field. Reconnection inside the emerging flux rope in addition to that between the…

太阳与恒星天体物理 · 物理学 2015-06-19 Fang Fang , Yuhong Fan , Scott W. McIntosh

Using high-resolution images from 1.6 m New Solar Telescope (NST) at Big Bear Solar Observatory (BBSO), we report the direct evidence of chromospheric reconnection at the polarity inversion line (PIL) between two small opposite polarity…

太阳与恒星天体物理 · 物理学 2015-08-19 Pankaj Kumar , Vasyl Yurchyshyn , Haimin Wang , Kyung-Suk Cho

The Chandra Multiwavelength Project (ChaMP) has discovered a jet-like structure associated with a newly recognized QSO at redshift z=1.866. The system was 9.4 arcmin off-axis during an observation of 3C 207. Although significantly distorted…

Jets are common eruptive phenomena in the solar atmosphere which may occur repeatedly. Many studies of their fine dynamics have been conducted. However, the fine dynamics of persistent interactions among various features that drive…

太阳与恒星天体物理 · 物理学 2026-03-12 Hengyuan Wei , Zhenghua Huang , Yadan Duan , Chuan Li

Within the framework of resistive MHD, implementing the C7 equilibrium atmosphere model and a 3D potential magnetic field realistic configuration, we simulate the formation of a plasm jet with the morphology, upward velocity up to 130 km/s…

太阳与恒星天体物理 · 物理学 2020-05-29 J. J. González-Avilés , F. S. Guzmán , V. Fedun , G. Verth , R. Sharma , S. Shelyag , S. Regnier

Observations of jets from quasars and other types of accreting black hole are briefly summarized. The importance of beaming and $\gamma$-ray observations for understanding the origin of these jets is emphasised. It is argued that both the…

天体物理学 · 物理学 2010-04-23 R. D. Blandford

A broad jet was observed in a weak magnetic field area at the edge of active region NOAA 11106. The peculiar shape and magnetic environment of the broad jet raised the question of whether it was created by the same physical processes of…

We present the first observation, analysis and modeling of solar coronal twin jets, which occurred after a preceding jet. Detailed analysis on the kinetics of the preceding jet reveals its blowout-jet nature, which resembles the one studied…

太阳与恒星天体物理 · 物理学 2016-08-30 Jiajia Liu , Fang Fang , Yuming Wang , Scott W. McIntosh , Yuhong Fan , Quanhao Zhang

A recent study using {\it Hinode} (SOT/FG) data of a sunspot revealed some unusually large penumbral jets that often repeatedly occurred at the same locations in the penumbra, namely at the tail of a penumbral filament or where the tails of…

Using numerical simulations, we show that jets with features of type II spicules and cold coronal jets corresponding to temperatures $10^{4}$ K can be formed due to magnetic reconnection in a scenario in presence of magnetic resistivity.…

太阳与恒星天体物理 · 物理学 2017-05-29 J. J. González-Avilés , F. S. Guzmán , V. Fedun

Coronal jets and bright points occur prolifically in predominantly unipolar magnetic regions, such as coronal holes, where they appear above minority-polarity intrusions. Intermittent low-level reconnection and explosive,…

太阳与恒星天体物理 · 物理学 2018-09-19 Peter F. Wyper , C. Richard DeVore , Judy T. Karpen , Spiro K. Antiochos , Anthony R. Yeates

The formation of a close binary system is investigated using a three-dimensional resistive magnetohydrodynamics simulation. Starting from a prestellar cloud, the cloud evolution is calculated until about 400 yr after protostar formation.…

太阳与恒星天体物理 · 物理学 2020-07-15 Yu Saiki , Masahiro N. Machida

We use H$\alpha$ imaging spectroscopy taken via the Swedish 1-m Solar Telescope (SST) to investigate the occurrence of fan-shaped jets at the solar limb. We show evidence for near-simultaneous photospheric reconnection at a sunspot edge…

太阳与恒星天体物理 · 物理学 2018-02-22 A. Reid , V. M. J. Henriques , M. Mathioudakis , T. Samanta

We conduct three-dimensional hydrodynamical simulations of two opposite jets launched from a binary stellar system into a previously ejected shell and show that the interaction can form barrel-like and H-like shapes in the descendant…

太阳与恒星天体物理 · 物理学 2018-01-24 Muhammad Akashi , Ealeal Bear , Noam Soker.

We aim at investigating the formation of jet-like features in the lower solar atmosphere, e.g. chromosphere and transition region, as a result of magnetic reconnection. Magnetic reconnection as occurring at chromospheric and transition…

太阳与恒星天体物理 · 物理学 2015-05-30 J. Y. Ding , M. S. Madjarska , J. G. Doyle , Q. M. Lu , K. Vanninathan , Z. Huang

The formation mechanism of the W50/SS433 complex has long been a mystery. We propose a new scenario in which the SS433 jets themselves form the W50/SS433 system. We carry out magnetohydrodynamics simulations of two-side jet propagation…

高能天体物理现象 · 物理学 2021-04-14 Takumi Ohmura , Kojiro Ono , Haruka Sakemi , Yuta Tashima , Rikuto Omae , Mami Machida

Jets from young stars represent one of the most striking signposts of star formation. The phenomenon has been researched for over two decades and there is now general agreement that such jets are generated as a by-product of accretion; most…

天体物理学 · 物理学 2007-05-23 Tom Ray , Catherine Dougados , Francesca Bacciotti , Jochen Eisloeffel , Antonio Chrysostomou

We study a series of X-ray-bright, rapidly-evolving active-region coronal jets outside the leading sunspot of AR 12259, using Hinode/XRT, SDO/AIA and HMI, and IRIS data. The detailed evolution of such rapidly evolving "violent" jets…

太阳与恒星天体物理 · 物理学 2017-07-26 Alphonse C. Sterling , Ronald L. Moore , David A. Falconer , Navdeep K. Panesar , Francisco Martinez