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Related papers: Small-scale H{\alpha} Jets in the Solar Chromosphe…

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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

We report on observations of a solar jet propagating along coronal loops taken by the Solar Dynamics Observatory (SDO), the Interface Region Imaging Spectragraph (IRIS) and 1-m New Vacuum Solar Telescope (NVST). The ejecta of the jet…

Solar and Stellar Astrophysics · Physics 2020-07-09 Zhenghua Huang , Qingmin Zhang , Lidong Xia , Bo Li , Zhao Wu , Hui Fu

Dynamic features, such as chromospheric jets, transition region network jets, coronal plumes and coronal jets, are abundant in the network regions of the solar polar coronal holes. We investigate the relationship between chromospheric jets…

Solar and Stellar Astrophysics · Physics 2022-02-09 Youqian Qi , Zhenghua Huang , Lidong Xia , Hui Fu , Mingzhe Guo , Zhenyong Hou , Weixin Liu , Mingzhe Sun , Dayang Liu

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

The heating of the solar chromosphere and corona is a long-standing puzzle in solar physics. Hinode observations show the ubiquitous presence of chromospheric anemone jets outside sunspots in active regions. They are typically 3 to 7 arc…

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 a uniform analysis of compact Ca II K (3934 \AA) brightenings that occur near flare kernels and assess their value as short-lead indicators of solar flare onset. Using high-cadence imaging from the Rapid Oscillations in the Solar…

Solar and Stellar Astrophysics · Physics 2025-12-29 Aman Priyadarshi M. Kumar , Juie Shetye , Sean G. Sellers , Damian J. Christian

We examine in greater detail five events previously identified as being sources of strong transient coronal outflows in a solar polar region in Hinode/EUV Imaging Spectrometer (EIS) Doppler data. Although relatively compact or faint and…

Solar and Stellar Astrophysics · Physics 2022-11-30 Alphonse C. Sterling , Conrad Schwanitz , Louise K. Harra , Nour E. Raouafi , Navdeep K. Panesar , Ronald L. Moore

We use H$\alpha$ imaging spectroscopy taken via the Swedish 1-m Solar Telescope (SST) to investigate the occurrence of fan-shaped jets at the solar limb. We show evidence for near-simultaneous photospheric reconnection at a sunspot edge…

Solar and Stellar Astrophysics · Physics 2018-02-22 A. Reid , V. M. J. Henriques , M. Mathioudakis , T. Samanta

A new type of chromospheric jets in a polar limb of a coronal hole is discovered in the Ca II filtergram of the Solar Optical Telescope on board the \textit{Hinode}. We identify 30 jets in the Ca II movie of duration of 53 min. The average…

Solar and Stellar Astrophysics · Physics 2019-10-23 Il-Hyun Cho , Yong-Jae Moon , Kyung-Suk Cho , Valery M. Nakariakov , Jin-Yi Lee , Yeon-Han Kim

We report on high resolution observations of recurrent fan-like jets by the Goode Solar telescope (GST) in multi-wavelengths inside a sunspot group. The dynamics behaviour of the jets is derived from the Ha line profiles. Quantitative…

Solar and Stellar Astrophysics · Physics 2022-06-29 Jie Zhao , Jiangtao Su , Xu Yang , Hui Li , Brigitte Schmieder , Kwangsu Ahn , Wenda Cao

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

Context. Solar active regions are known to have jets. These jets are associated with heating and the release of particles into the solar wind. Aim. Our aim is to understand the spatial distribution of coronal jets within active regions to…

Solar and Stellar Astrophysics · Physics 2022-09-07 Jonas Odermatt , Krzysztof Barczynski , Louise K. Harra , Conrad Schwanitz , Säm Krucker

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 results of the study of chromospheric and photospheric line-of-sight velocity fields in the young active region NOAA 11024. Multi-layer, multi-wavelength observational data were used for the analysis of the emerging flux in this…

Solar and Stellar Astrophysics · Physics 2012-12-07 N. N. Kondrashova , M. N. Pasechnik , S. N. Chornogor , E. V. Khomenko

Solar jets are observed as collimated plasma beams over a large range of temperatures and wavelengths. They have been observed in Halpha and optical lines for more than 50 years and called surges. The term "jet" comes from X-ray…

Solar and Stellar Astrophysics · Physics 2022-01-28 Brigitte Schmieder

We report the smallest coronal jets ever observed in the quiet Sun with recent high resolution observations from the High Resolution Telescopes (HRI-EUV and HRI-Ly{\alpha}) of the Extreme Ultraviolet Imager (EUI) onboard Solar Orbiter. In…

Solar and Stellar Astrophysics · Physics 2021-09-29 Zhenyong Hou , Hui Tian , David Berghmans , Hechao Chen , Luca Teriaca , Udo Schuhle , Yuhang Gao , Yajie Chen , Jiansen He , Linghua Wang , Xianyong Bai

Aim: To study the interaction of the solar chromosphere with the transition region, in particular active-region jets in the transition region and their relation to chromospheric fibrils. Methods: We carefully align image sequences taken…

Astrophysics · Physics 2008-11-26 A. G. de Wijn , B. De Pontieu

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

High cadence, multi-wavelength observations and simulations are employed for the analysis of solar photospheric magnetic bright points (MBPs) in the quiet Sun. The observations were obtained with the Rapid Oscillations in the Solar…

Solar and Stellar Astrophysics · Physics 2015-06-11 P. H. Keys , M. Mathioudakis , D. B. Jess , S. Shelyag , D. J. Christian , F. P. Keenan