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Related papers: Coronal Mini-jets in an Activated Solar Tornado-li…

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Mini-filament eruptions are one of the most common small-scale transients in the solar atmosphere. However, their eruption mechanisms are still not understood thoroughly. Here, with a combination of 174 A images of high spatio-temporal…

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 chromospheric jet lasting for more than 1 hr observed by Hinode Solar Optical Telescope in unprecedented detail. The ejection occurred in three episodes separated by 12-14 min, with the amount and velocity of material decreasing…

Solar and Stellar Astrophysics · Physics 2012-08-17 Wei Liu , Thomas E. Berger , Alan M. Title , Theodore D. Tarbell

Small-scale explosive events or microflares occur throughout the chromospheric network of the Sun. They are seen as sudden bursts of highly Doppler shifted spectral lines of ions formed at temperatures in the range 2x10^4 - 5x10^5 K. They…

Astrophysics · Physics 2015-06-24 D. E. Innes , G. Toth

Coronal plumes are long, ray-like, open structures, which have been considered as possible sources for the solar wind. Their origin in the largely unipolar coronal holes has long been a mystery. Earlier spectroscopic and imaging…

Solar and Stellar Astrophysics · Physics 2022-07-06 Pankaj Kumar , Judith T. Karpen , Vadim M. Uritsky , Craig E. Deforest , Nour E. Raouafi , C. Richard DeVore

Observations of radio noise storms can act as sensitive probes of nonthermal electrons produced in small acceleration events in the solar corona. We use data from noise storm episodes observed jointly by the Giant Metrewave Radio Telescope…

Solar and Stellar Astrophysics · Physics 2018-05-22 Tomin James , Prasad Subramanian

Recent radioastronomical observations of Faraday rotation in the solar corona can be interpreted as evidence for coronal currents, with values as large as $2.5 \times 10^9$ Amperes (Spangler 2007). These estimates of currents are used to…

Astrophysics · Physics 2020-01-29 Steven R. Spangler

Solar microflares are ubiquitous in the solar corona, yet their driving mechanisms remain a subject of ongoing debate. Using high-resolution coronal observations from the Solar Orbiter's Extreme Ultraviolet Imager (EUI), we identified about…

Solar and Stellar Astrophysics · Physics 2025-03-17 Qingmei Wang , Yi Bi , Hongfei Liang , Jiayan Yang , Liufan Gong

Aims. We analyze coronagraph observations of a polar jet observed by the Sun Earth Connection Coronal and Heliospheric Investigation (SECCHI) instrument suite onboard the Solar TErrestrial RElations Observatory (STEREO) spacecraft. Methods.…

Solar and Stellar Astrophysics · Physics 2011-12-13 L. Feng , B. Inhester , J. de Patoul , T. Wiegelmann , W. Q. Gan

We perform a 2.5 dimensional magnetohydrodynamic (MHD) simulation to understand a comprehensive view of the formation of spicule-like cool jets due to initial transverse velocity pulses akin to Alfv\'en pulses in the solar chromosphere. We…

Solar and Stellar Astrophysics · Physics 2022-02-02 B. Singh , A. K. Srivastava , K. Sharma , S. K. Mishra , B. N. Dwivedi

Small (~50km scale), irregular features seen in Cassini images to be emanating from Saturn's F ring have been termed mini-jets by Attree et al. (2012). One particular mini-jet was tracked over half an orbital period, revealing its evolution…

Earth and Planetary Astrophysics · Physics 2017-12-21 Nicholas O. Attree , Carl D. Murray , Gareth A. Williams , Nicholas J. Cooper

Aims. We perform a detailed observational analysis of network jets to understand their kinematics, rotational motion and underlying triggering mechanism(s). We have analyzed the quiet-Sun (QS) data. Methods. IRIS high resolution imaging and…

Solar and Stellar Astrophysics · Physics 2018-08-29 P. Kayshap , K. Murawski , A. K. Srivastava , B. N. Dwivedi

We present an observational study of the plasma dynamics at the base of a solar coronal jet, using high resolution extreme ultraviolet imaging data taken by the Extreme Ultraviolet Imager on board Solar Orbiter, and by the Atmospheric…

Context. Recent observations by the Extreme Ultraviolet Imager (EUI) on board Solar Orbiter have characterized prevalent small-scale transient brightenings in the corona above the quiet Sun termed campfires. Aims. In this study we search…

Solar and Stellar Astrophysics · Physics 2021-12-15 Yajie Chen , Damien Przybylski , Hardi Peter , Hui Tian , F. Auchère , D. Berghmans

Context. Solar activity is often accompanied by solar radio emission, consisting of numerous types of solar radio bursts. At low frequencies (<100 MHz) radio bursts with short durations of milliseconds, such as solar S-bursts, have been…

Coronal jets are believed to be the miniature version of large-scale solar eruptions. In particular, the eruption of a mini-filament inside the base arch is suggested to be the trigger and even driver of blowout jets. Here we propose an…

Solar and Stellar Astrophysics · Physics 2024-06-06 Tingyu Gou , Rui Liu , Yang Su , Astrid M. Veronig , Hanya Pan , Runbin Luo , Weiqun Gan

Coronal mass ejections (CMEs) are thought to drive collisionless shocks in the solar corona, which in turn have been shown capable of accelerating solar energetic particles (SEPs) in minutes. It has been notoriously difficult to extract…

Solar and Stellar Astrophysics · Physics 2015-06-19 Kamen A. Kozarev , John C. Raymond , Vasili V. Lobzin , Michael Hammer

Imaging solar coronal condensation forming prominences was difficult in the past, a situation recently changed by Hinode and SDO. We present the first example observed with SDO/AIA, in which material gradually cools through multiple EUV…

Solar and Stellar Astrophysics · Physics 2015-03-13 Wei Liu , Thomas E. Berger , B. C. Low

Prominences in the solar corona are hundredfold cooler and denser than their surroundings, with a total mass of 1.e13 up to 1.e15 g. Here we report on the first comprehensive simulations of three-dimensional, thermally and gravitationally…

Solar and Stellar Astrophysics · Physics 2015-06-22 Chun Xia , Rony Keppens , Patrick Antolin , Oliver Porth

We study 14 large solar jets observed in polar coronal holes. In EUV movies from SDO/AIA, each jet appears similar to most X-ray jets and EUV jets that erupt in coronal holes, but each is exceptional in that it goes higher than most, so…

Solar and Stellar Astrophysics · Physics 2015-06-11 Ronald L. Moore , Alphonse C. Sterling , David A. Falconer