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Recent investigations indicate that solar coronal jets result from eruptions of small-scale chromospheric filaments, called minifilaments; that is, the jets are produced by scaled-down versions of typical-sized filament eruptions. We…

Solar and Stellar Astrophysics · Physics 2016-12-07 Alphonse C. Sterling , Ronald L. Moore

Solar coronal jets are frequently occurring collimated ejections of solar plasma, originating from magnetically mixed polarity locations on the Sun of size scale comparable to that of a supergranule. Many, if not most, coronal jets are…

Solar and Stellar Astrophysics · Physics 2023-02-28 Alphonse C. Sterling , Ronald L. Moore , Navdeep K. Panesar , Tanmoy Samanta , Sanjiv K. Tiwari , Sabrina L. Savage

We present an overview of fine-scale features in the Sun's atmosphere, with a focus on spicules and jets. We consider older and newer observations and theories for chromospheric spicules and coronal jets. We also consider the connection…

Solar and Stellar Astrophysics · Physics 2025-12-04 Alphonse C. Sterling

We present detailed analysis of an active region coronal jet accompanying a minifilament eruption that is fully captured and well-resolved in high spatial resolution 174A coronal images from Solar Orbiters Extreme Ultraviolet Imager (EUI).…

Jets, whatever small (e.g. spicules) or large (e.g. macrospicules) their size, may play a key role in momentum and energy transport from photosphere to chromosphere and at least to the low corona. Here, we investigate the properties of…

Solar and Stellar Astrophysics · Physics 2017-06-02 T. S. Kiss , N. Gyenge , R. Erdelyi

Spicules are rapidly evolving fine-scale jets of magnetized plasma in the solar chromosphere. It remains unclear how these prevalent jets originate from the solar surface and what role they play in heating the solar atmosphere. Using the…

Minifilaments are widespread small-scale structures in the solar atmosphere. To better understand their formation and eruption mechanisms, we investigate the entire life of a sigmoidal minifilament located below a large quiescent filament…

Solar and Stellar Astrophysics · Physics 2024-05-28 Weilin Teng , Yingna Su , Rui Liu , Jialin Chen , Yanjie Liu , Jun Dai , Wenda Cao , Jinhua Shen , Haisheng Ji

Solar macrospicules are beam-like cool plasma ejections of size in-between spicules and coronal jets, which can elucidate potential connections between plasma jetting activity at different scales. With high-resolution observations from the…

Solar and Stellar Astrophysics · Physics 2023-01-18 Yadan Duan , Yuandeng Shen , Hechao Chen , Zehao Tang , Chenrui Zhou , Xinping Zhou , Song Tan

Understanding the dynamic solar chromosphere is fundamental in solar physics. Spicules are an important feature of the chromosphere, connecting the photosphere to the corona, potentially mediating the transfer of energy and mass. The aim of…

Solar and Stellar Astrophysics · Physics 2015-06-11 Tiago M. D. Pereira , Bart De Pontieu , Mats Carlsson

Small-scale jet-like eruptions, such as picoflare jets and jetlets, are recognized as potential contributors to coronal heating and solar wind acceleration, yet their physical origin is still not fully established. Using…

Solar and Stellar Astrophysics · Physics 2026-02-23 Annu Bura , Daniel Nóbrega-Siverio , Tanmoy Samanta , Jayant Joshi

Over the last two decades the uninterrupted, high-resolution observations of the Sun, from the excellent range of telescopes aboard many spacecraft complemented with observations from sophisticated ground-based telescopes have opened up a…

Solar and Stellar Astrophysics · Physics 2015-06-05 G. Tsiropoula , K. Tziotziou , I. Kontogiannis , M. S. Madjarska , J. G. Doyle , Y. Suematsu

Most of the commonly discussed solar coronal jets are of the type consisting of a single spire extending approximately vertically from near the solar surface into the corona. Recent research supports that eruption of a miniature filament…

Solar and Stellar Astrophysics · Physics 2019-02-13 Alphonse C. Sterling , Louise K. Harra , Ronald L. Moore , David A. Falconer

Minifilament (MF) eruption producing small jets and micro-flares is regarded as an important source for coronal heating and the solar wind transients through studies mostly based on coronal observations in the extreme ultraviolet (EUV) and…

Solar and Stellar Astrophysics · Physics 2024-02-14 Jiasheng Wang , Jeongwoo Lee , Jongchul Chae , Yan Xu , Wenda Cao , Haimin Wang

Many solar coronal jets result from erupting miniature-filament ("minifilament") magnetic flux ropes that reconnect with encountered surrounding far-reaching field. Many of those minifilament flux ropes are apparently built and triggered to…

Solar and Stellar Astrophysics · Physics 2020-12-09 Alphonse C. Sterling , Ronald L. Moore , Navdeep K. Panesar , Tanmoy Samanta

Spicules have often been proposed as substantial contributors toward the mass and energy balance of the solar corona. While their transition region (TR) counterpart has unequivocally been established over the past decade, the observations…

Solar and Stellar Astrophysics · Physics 2025-03-13 Souvik Bose , Jayant Joshi , Paola Testa , Bart De Pontieu

The Parker Solar Probe (PSP) has observed copious rapid magnetic field direction changes in the near-Sun solar wind. These features have been called "switchbacks," and their origin is a mystery. But their widespread nature suggests that…

Solar and Stellar Astrophysics · Physics 2020-06-24 Alphonse C. Sterling , Ronald L. Moore

We performed a 3D radiative MHD simulation of the solar atmosphere. This simulation shows a jet-like feature that shows similarities to the type II spicules observed for the first time with Hinode. Rapid Blueshifted Events (RBEs) on the…

Spicules, the smallest observable jet-like dynamic features ubiquitous in the chromosphere, are supposedly an important potential source for small-scale solar wind transients, with supporting evidence yet needed. We studied the…

Solar and Stellar Astrophysics · Physics 2025-07-18 Jeongwoo Lee , Haimin Wang , Jiasheng Wang , Meiqi Wang

We present the first joint high-resolution observations of small-scale EUV jets using Solar Orbiter(SolO)'s Extreme Ultraviolet Imager and High Resolution Imager (HRI) and H$\alpha$ imaging from the Visible Imaging Spectrometer (VIS)…

Solar and Stellar Astrophysics · Physics 2025-10-21 Jeongwoo Lee , Dana Longcope , Junmu Youn , Navdeep K. Panesar , Nengyi Huang , Haimin Wang

The solar chromosphere contains thin, highly dynamic strands of plasma known as spicules. Recently, it has been suggested that the smallest and fastest (Type II) spicules are identical to intermittent jets observed by the Interface Region…

Solar and Stellar Astrophysics · Physics 2015-10-14 Steven R. Cranmer , Lauren N. Woolsey
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