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Coronal holes are areas on the Sun with open magnetic field lines. They are a source region of the solar wind, but how the wind emerges from coronal holes is not known. We observed a coronal hole using the Extreme Ultraviolet Imager on the…

We follow up on the Sterling et al (2015) discovery that nearly all polar coronal X-ray jets are made by an explosive eruption of closed magnetic field carrying a miniature filament in its core. In the same X-ray and EUV movies used by…

Solar and Stellar Astrophysics · Physics 2018-06-01 Ronald L. Moore , Alphonse C. Sterling , Navdeep K. Panesar

We report two sympathetic solar eruptions, including a partial and a full flux rope eruption in a quadrupolar magnetic region, where a large and a small filament resided above the middle and the east neutral lines respectively. The large…

Solar and Stellar Astrophysics · Physics 2015-06-04 Yuandeng Shen , Yu Liu , Jiangtao Su

Using the multi-wavelength images and the photospheric magnetograms from the \emph{Solar Dynamics Observatory}, we study the flare which was associated by the only one coronal mass ejection (CME) in active region (AR) 12192. The eruption of…

Solar and Stellar Astrophysics · Physics 2015-11-06 Xiaohong Li , Shuhong Yang , Huadong Chen , Ting Li , Jun Zhang

The Sun produces highly dynamic and eruptive events that can drive shocks through the corona. These shocks can accelerate electrons, which result in plasma emission in the form of a type II radio burst. Despite the large number of type II…

Solar and Stellar Astrophysics · Physics 2021-03-10 Ciara A. Maguire , Eoin P. Carley , Pietro Zucca , Nicole Vilmer , Peter T. Gallagher

We consider small-scale jet-like events that might make the solar wind, as has been suggested in recent studies. We show that the events referred to as "coronal jets" and as "jetlets" both fall on a power-law distribution that also includes…

Solar and Stellar Astrophysics · Physics 2024-01-19 Alphonse C. Sterling , Navdeep K. Panesar , Ronald L. Moore

We examine 21 solar polar coronal jets that we identify in soft X-ray images obtained from the Hinode/X-ray telescope (XRT). We identify 11 of these jets as blowout jets and four as standard jets (with six uncertain), based on their…

Solar and Stellar Astrophysics · Physics 2022-03-14 Alphonse C. Sterling , Ronald L. Moore , Navdeep K. Panesar

Filament eruption is a common phenomenon in solar activity, but the triggering mechanism is not well understood. We focus our study on a filament eruption located in a complex nest of three active regions close to a coronal hole. The…

Solar and Stellar Astrophysics · Physics 2024-06-04 Y. Liu , G. P. Ruan , B. Schmieder , J. H. Guo , Y. Chen , R. S. Zheng , J. T. Su , B. Wang

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…

High spatial- and temporal-resolution images of coronal hole regions show a dynamical environment where mass flows and jets are frequently observed. These jets are believed to be important for the coronal heating and the acceleration of the…

Solar and Stellar Astrophysics · Physics 2013-10-31 K. Chandrashekhar , A. Bemporad , D. Banerjee , G. R. Gupta , L. Teriaca

We present a detailed analysis of a confined filament eruption and jet associated with a C1.5 class solar flare. Multi-wavelength observations from GONG and SDO reveal the filament forming over several days following the emergence and then…

Solar and Stellar Astrophysics · Physics 2020-01-08 Lauren Doyle , Peter F. Wyper , Eamon Scullion , James A. McLaughlin , Gavin Ramsay , J. Gerard Doyle

We report the formation of a complicated coronal mass ejection (CME) on 2015 August 23 by using the high temporal and high spatial resolution multi-wavelength observations taken by the Solar Dynamic Observatory and the Solar and…

Solar and Stellar Astrophysics · Physics 2019-09-04 Yadan Duan , Yuandeng Shen , Hechao Chen , Hongfei Liang

We detect and analyse transverse oscillations in a coronal loop, lying at the south east limb of the Sun as seen from the \textit{{Atmospheric Imaging Assembly}} (AIA) onboard \textit{{Solar Dynamics Observatory}} (SDO). The jet is believed…

Solar and Stellar Astrophysics · Physics 2016-12-07 S. Sarkar , V. Pant , A. K. Srivastava , D. Banerjee

We present the sympathetic eruption of a standard and a blowout coronal jets originating from two adjacent coronal bright points (CBP1 and CBP2) in a polar coronal hole, using soft X-ray and extreme ultraviolet observations respectively…

Solar and Stellar Astrophysics · Physics 2021-05-12 Zehao Tang , Yuandeng Shen , Xinping Zhou , Yadan Duan , Chengrui Zhou , Song Tan , Elmhamdi Abouazza

Solar type II radio bursts are commonly attributed to coronal shocks driven by coronal mass ejections (CMEs). However, some metric type II bursts have occasionally been reported to occur in the absence of a CME and to be associated with…

Solar and Stellar Astrophysics · Physics 2025-12-23 Yingli Cui , Xiangliang Kong , Zhentong Li , Bing Wang , Yadan Duan , Ze Zhong , Hao Ning , Zhao Wu , Manqing Wang , Yang Liu , Feiyu Yu , Zelong Jiang , Wei Chen , Yang Su , Yao Chen

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)…

Solar and Stellar Astrophysics · Physics 2018-09-05 Alphonse C. Sterling , Ronald L. Moore , Navdeep K. Panesar

Solar jets, characterized by small-scale plasma ejections along open magnetic field lines or the legs of large-scale coronal loops, play a crucial role in the dynamics of the solar atmosphere. Although spectral and EUV images have been…

In this paper, we present a detailed analysis of a coronal blowout jet eruption which was associated with an obvious extreme-ultraviolet (EUV) wave and one complicated coronal mass ejection (CME) event based on the multi-wavelength and…

Solar and Stellar Astrophysics · Physics 2018-12-27 Y. H. Miao , Y. Liu , H. B. Li , Y. D. Shen , S. H. Yang , A. Elmhamdi , A. S. Kordi , Z. Z. Abidin

The coronal blowout jet is a peculiar category among various jet phenomena, of which the sheared base arch, often carrying a small filament, experiences a miniature version of blowout eruption that produces large-scale coronal mass ejection…

Solar and Stellar Astrophysics · Physics 2015-05-30 Yuandeng Shen , Yu Liu , Jiangtao Su , Yuanyong Deng

Previous studies have revealed that solar coronal jets triggered by the eruption of mini-filaments (MFs) conform to the famous magnetic-breakout mechanism. In such scenario, a breakout current sheet (BCS) and a flare current sheet (FCS)…

Solar and Stellar Astrophysics · Physics 2024-01-05 Liheng Yang , Xiaoli Yan , Zhike Xue , Zhe Xu , Qingmin Zhang , Yijun Hou , Jincheng Wang , Huadong Chen