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Interchange reconnection is believed to play a significant role in the production of solar jets and solar wind. However, the dynamics of interchange reconnection in the low corona might be more complex than recognized before in higher…

Solar and Stellar Astrophysics · Physics 2026-01-28 Yadan Duan , Xiaoli Yan , Junchao Hong , Hechao Chen , Yuhang Gao , Zheng Sun , Zhenyong Hou , Jincheng Wang

We report the discovery of supersonic downflows in a sunspot light bridge using measurements taken with the spectropolarimeter on board the Hinode satellite. The downflows occur in small patches close to regions where the vector magnetic…

Solar and Stellar Astrophysics · Physics 2015-05-14 Rohan Eugene Louis , Luis R. Bellot Rubio , Shibu K. Mathew , P. Venkatakrishnan

Magnetic reconnection at the interface between coronal holes and loops, so-called interchange reconnection, can release the hotter, denser plasma from magnetically confined regions into the heliosphere, contributing to the formation of the…

Solar and Stellar Astrophysics · Physics 2015-03-13 A. F. Rappazzo , W. H. Matthaeus , D. Ruffolo , S. Servidio , M. Velli

We present and discuss multi-wavelength observations of five homologous recurrent solar jets that occurred in active region NOAA 11133 on 11 December, 2010. These jets were well observed by the Solar Dynamic observatory (SDO) with high…

Solar and Stellar Astrophysics · Physics 2015-06-23 Ramesh Chandra , G. R. Gupta , Sargam Mulay , Durgesh Tripathi

We present spectroscopic and imaging observations of small-scale reconnection events on the Sun. Using the Interface Region Imaging Spectrograph (IRIS) observations, one reconnection event is first detected as IRIS jets with fast…

Solar and Stellar Astrophysics · Physics 2018-07-25 Dong Li , Leping Li , Zongjun Ning

A new solar feature termed a dark jet is identified from observations of an extended solar coronal hole that was continuously monitored for over 44 hours by the EUV Imaging Spectrometer on board the Hinode spacecraft in 2011 February 8-10.…

Solar and Stellar Astrophysics · Physics 2015-06-23 Peter R. Young

Fast Magnetic Reconnection is currently regarded as an important process also beyond the solar system, specially in magnetically dominated regions of galactic and extragalactic sources like the surrounds of black holes and relativistic…

Magnetic-field reconnection is believed to play a fundamental role in magnetized plasma systems throughout the Universe1, including planetary magnetospheres, magnetars and accretion disks around black holes. This letter present extreme…

Solar and Stellar Astrophysics · Physics 2015-02-06 Yang Su , Astrid M. Veronig , Gordon D. Holman , Brian R. Dennis , Tongjiang Wang , Manuela Temmer , Weiqun Gan

Solar nanojets are small-scale jets generated by component magnetic reconnection, characterized by collimated plasma motion perpendicular to the reconnecting magnetic field lines. As an indicator of nanoflare events, they are believed to…

Solar and Stellar Astrophysics · Physics 2025-04-30 Yuhang Gao , Hui Tian , David Berghmans , Yadan Duan , Tom Van Doorsselaere , Hechao Chen , Emil Kraaikamp

High resolution spectro-polarimetric observations of a sunspot light bridge by Hinode, reveal small-scale inhomogeneities in the magnetic field and velocity. These inhomogeneities arise as a consequence of a weak, secondary lobe in the…

Solar and Stellar Astrophysics · Physics 2015-10-28 Rohan E. Louis

A sunspot acts as a waveguide in response to the dynamics of the solar interior; the trapped waves and oscillations could reveal its thermal and magnetic structures. We study the oscillations in a sunspot intruded by a light bridge, the…

Solar and Stellar Astrophysics · Physics 2016-10-19 Ding Yuan , Robert W. Walsh

We present a comprehensive study of a series of recurrent jets that occurred at the periphery of the NOAA active region 12114 on 2014 July 7. These jets were found to share the same source region and exhibited rotational motions as they…

Solar and Stellar Astrophysics · Physics 2020-01-08 Lei Lu , Li Feng , Ying Li , Dong Li , Zongjun Ning , Weiqun Gan

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…

Solar and Stellar Astrophysics · Physics 2016-03-21 Jie Hong , M. D. Ding , Ying Li , Kai Yang , Xin Cheng , Feng Chen , Cheng Fang , Wenda Cao

A multi-wavelength photometric analysis was performed in order to study the sub-structure of a sunspot light bridge in the photosphere and the chromosphere. Active region NOAA 8350 was observed on 1998 October 8. The data consist of a 100…

Astrophysics · Physics 2008-11-26 Lokesh Bharti , Thomas Rimmele , Rajmal Jain , R. N. Smartt

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…

Solar and Stellar Astrophysics · Physics 2025-07-24 Heesu Yang , Maria S. Madjarska , EunKyung Lim , Daniel Nóbrega-Siverio , Klaus Galsgaard

Magnetic reconnection is a fundamental physical process in various astrophysical, space, and laboratory environments. Many pieces of evidence for magnetic reconnection have been uncovered. However, its specific processes that could be…

Solar and Stellar Astrophysics · Physics 2018-10-24 X. Cheng , Y. Li , L. F. Wan , M. D. Ding , P. F. Chen , J. Zhang , J. J. Liu

Aims. Recurring jets are observed in the solar atmosphere, which can erupt intermittently. By the observation of intermittent jets, we want to understand the causes of periodic eruption characteristics. Methods. We report intermittent jets…

Solar and Stellar Astrophysics · Physics 2023-12-08 Qiuzhuo Cai , Guiping Ruan , Chenxi Zheng , Brigitte Schmieder , Jinhan Guo , Yao Chen , Jiangtao Su , Yang Liu , Jihong Liu , Wenda Cao

Magnetic reconnection plays a crucial role in the energy release process for different kinds of solar eruptions and activities. The rapid solar eruption requires a fast reconnection model. Plasmoid instability in the reconnecting current…

Solar and Stellar Astrophysics · Physics 2024-05-01 Guanchong Cheng , Lei Ni , Zehao Tang , Yajie Chen , Yuhao Chen , Jialiang Hu , Jun Lin

Magnetic reconnection is a fundamental plasma process associated with conversion of the embedded magnetic field energy into kinetic and thermal plasma energy, via bulk acceleration and Ohmic dissipation. In many high-energy astrophysical…

Plasma Physics · Physics 2018-05-09 Longqing Yi , Baifei Shen , Alexander Pukhov , Tünde Fülöp

We present observational analysis of two successive two-sided loop jets observed by the ground-based New Vacuum Solar Telescope (NVST) and the space-borne Solar Dynamics Observatory ( SDO). The two successive two-sided loop jets manifested…

Solar and Stellar Astrophysics · Physics 2017-12-27 Zhanjun Tian , Yu Liu , Yuandeng Shen , Abouazza Elmhamdi , Jiangtao Su , Ying D. Liu , Ayman. S. Kordi