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Collimated ejections of plasma called "coronal hole jets" are commonly observed in polar coronal holes. However, such coronal jets are not only a specific features of polar coronal holes but they can also be found in coronal holes appearing…

Solar and Stellar Astrophysics · Physics 2015-05-18 G. Nistico' , V. Bothmer , S. Patsourakos , G. Zimbardo

Observations from the Atmospheric Imaging Assembly (AIA) onboard the Solar Dynamics Observatory (SDO) reveal ubiquitous episodic outflows (jets) with an average speed around 120 km s-1 at temperatures often exceeding a million degree in…

Solar and Stellar Astrophysics · Physics 2011-07-27 Hui Tian , Scott W. McIntosh , Shadia Rifal Habbal , Jiansen He

Intensity bursts in ultraviolet (UV) to X-ray wavelengths and plasma jets are typical signatures of magnetic reconnection and the associated impulsive heating of the solar atmospheric plasma. To gain new insights into the process,…

Solar and Stellar Astrophysics · Physics 2021-12-15 L. P. Chitta , S. K. Solanki , H. Peter , R. Aznar Cuadrado , L. Teriaca , U. Schühle , F. Auchère , D. Berghmans , E. Kraaikamp , S. Gissot , C. Verbeeck

Observations from the X-ray telescope (XRT) on Hinode are used to study the nature of X-ray bright points, sources of coronal jets. Several jet events in the coronal holes are found to erupt from small-scale, S-shaped bright regions. This…

Solar and Stellar Astrophysics · Physics 2015-05-19 N. -E. Raouafi , M. K. Georgoulis , D. M. Rust , P. N. Bernasconi

Coronal mass ejections (CMEs) and coronal jets are two types of common solar eruptive phenomena, which often independently happen at different spatial scales. In this work, we present a stereoscopic observation of a large-scale CME flux…

Solar and Stellar Astrophysics · Physics 2021-04-21 Hechao Chen , Jiayan Yang , Junchao Hong , Haidong Li , Yadan Duan

We report observations of homologous coronal jets and their coronal mass ejections (CMEs) observed by instruments onboard the Solar Dynamics Observatory (SDO) and Solar and Heliospheric Observatory (SOHO) spacecraft. The homologous jets…

Solar and Stellar Astrophysics · Physics 2016-05-25 Navdeep K. Panesar , Alphonse C. Sterling , Ronald L. Moore

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…

Solar and Stellar Astrophysics · Physics 2016-08-30 Jiajia Liu , Fang Fang , Yuming Wang , Scott W. McIntosh , Yuhong Fan , Quanhao Zhang

We report a solar jet phenomenon associated with the C5.4 class flare on 2014 November 11. The data of jet was provided by Solar Dynamics Observatory (SDO), X-Ray Telescope (XRT) aboard Hinode, Interface Region Imaging Spectrograph (IRIS)…

Solar and Stellar Astrophysics · Physics 2018-01-31 Takahito Sakaue , Akiko Tei , Ayumi Asai , Satoru Ueno , Kiyoshi Ichimoto , Kazunari Shibata

On February 12, 2021 two subsequent eruptions occurred above the West limb, as seen along the Sun-Earth line. The first event was a typical slow Coronal Mass Ejection (CME), followed $\sim 7$ hours later by a smaller and collimated…

Solar X-ray jets are evidently made by a burst of reconnection of closed magnetic field in a jet's base with ambient "open" field (1,2). In the widely-accepted version of the "emerging-flux" model, that reconnection occurs at a current…

Solar and Stellar Astrophysics · Physics 2017-05-10 Alphonse C. Sterling , Ronald L. Moore , David A. Falconer , Mitzi Adams

This report presents a three-dimensional (3D) numerical magnetohydrodynamics (MHD) model of the white-light coronagraph observational phenomena known as coronal inflows and in/out pairs. Coronal inflows in the LASCO/C2 field of view…

Solar and Stellar Astrophysics · Physics 2020-12-23 Benjamin J. Lynch

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

Observations of coronal jets increasingly suggest that local fragmentation and intermittency play an important role in the dynamics of these events. In this work we investigate this fragmentation in high-resolution simulations of jets in…

Solar and Stellar Astrophysics · Physics 2016-08-17 P. F. Wyper , C. R. DeVore , J. T. Karpen , B. J. Lynch

We report on observations of recurrent jets by instruments onboard the Interface Region Imaging Spectrograph (IRIS), Solar Dynamics Observatory (SDO) and Hinode spacecrafts. Over a 4-hour period on July 21st 2013, recurrent coronal jets…

Using one-arcsecond-slit scan observations from the Hinode/EUV Imaging Spectrometer (EIS) on 05 February 2007, we find the plasma outflows in the open and expanding coronal funnels at the eastern boundary of AR 10940. The Doppler velocity…

Solar and Stellar Astrophysics · Physics 2015-06-22 A. K. Srivastava , P. Konkol , K. Murawski , B. N. Dwivedi , A. Mohan

We investigate the processes that lead to the formation, ejection and fall of a confined plasma ejection that was observed in a numerical experiment of the solar corona. By quantifying physical parameters such as mass, velocity, and…

Solar and Stellar Astrophysics · Physics 2015-05-28 P. Zacharias , H. Peter , S. Bingert

We study the formation and evolution of jets in the solar atmosphere using numerical simulations of partially ionized plasma. The two-fluid magnetohydrodynamic equations with ion+electron and neutral hydrogen components are used in…

Solar and Stellar Astrophysics · Physics 2022-08-19 J. J. González-Avilés , K. Murawski , T. V. Zaqarashvili

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…

Solar and Stellar Astrophysics · Physics 2017-07-26 Alphonse C. Sterling , Ronald L. Moore , David A. Falconer , Navdeep K. Panesar , Francisco Martinez

We report high-resolution, high-cadence observations of five small-scale coronal jets in an on-disk quiet Sun region observed with Solar Orbiter's EUI/\hri\ in 174 \AA. We combine the \hri\ images with the EUV images of SDO/AIA and…

Solar and Stellar Astrophysics · Physics 2023-02-01 Navdeep K. Panesar , Viggo H. Hansteen , Sanjiv K. Tiwari , Mark C. M. Cheung , David Berghmans , Daniel Müller

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