English
Related papers

Related papers: Small-scale chromospheric jets above a sunspot lig…

200 papers

Context: Solar pores are small sunspots lacking a penumbra that have a prevailing vertical magnetic field component. They can include light bridges at places with locally reduced magnetic field. Like sunspots, they exhibit a wide range of…

Solar and Stellar Astrophysics · Physics 2015-06-17 M. Sobotka , M. Švanda , J. Jurčák , P. Heinzel , D. Del Moro , F. Berrilli

It is well-known that light bridges inside a sunspot produce small-scale plasma ejections and transient brightenings in the chromosphere, but the nature and origin of such phenomena are still unclear. Utilizing the high-spatial and high…

Solar and Stellar Astrophysics · Physics 2017-02-08 Donguk Song , Jongchul Chae , Vasyl Yurchyshyn , Eun-Kyung Lim , Kyung-Suk Cho , Heesu Yang , Kyuhyoun Cho , Hannah Kwak

A light bridge is a prominent structure commonly observed within a sunspot. Its presence usually triggers a wealth of dynamics in a sunspot, and has a lasting impact on sunspot evolution. However, the fundamental structure of light bridges…

Solar and Stellar Astrophysics · Physics 2020-04-15 Song Feng , Yuhu Miao , Ding Yuan , Zhongquan Qu , Valery M. Nakariakov

A broad jet was observed in a weak magnetic field area at the edge of active region NOAA 11106. The peculiar shape and magnetic environment of the broad jet raised the question of whether it was created by the same physical processes of…

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 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

IMaX/Sunrise has recently reported the temporal evolution of highly dynamic and strongly Doppler shifted Stokes V signals in the quiet Sun. We attempt to identify the same quiet-Sun jets in the Hinode spectropolarimeter (SP) data set. We…

Solar and Stellar Astrophysics · Physics 2015-05-28 V. Martinez Pillet , J. C. del Toro Iniesta , C. Quintero Noda

A recent study using {\it Hinode} (SOT/FG) data of a sunspot revealed some unusually large penumbral jets that often repeatedly occurred at the same locations in the penumbra, namely at the tail of a penumbral filament or where the tails of…

We present the results of high resolution co-temporal and co-spatial photospheric and chromospheric observations of sunspot penumbral intrusions. The data was taken with the Swedish Solar Telescope (SST) on the Canary Islands. Time series…

Solar and Stellar Astrophysics · Physics 2015-09-08 L. Bharti , S. K. Solanki , J. Hirzberger

Coronal bright points (CBPs) and jets are ubiquitous small-scale brightenings that are often associated with each other. In this paper, we report our multiwavelength observations of two groups of homologous jets. The first group was…

Solar and Stellar Astrophysics · Physics 2016-04-13 Q. M. Zhang , H. S. Ji , Y. N. Su

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

We have detected an optical jet in the BL Lac object 3C 371 that coincides with the radio jet in this object in the central few kpc. The most notable feature is a bright optical knot 3 arcsec (4 kpc) from the nucleus that occurs at the…

Astrophysics · Physics 2009-10-30 K. Nilsson , J. Heidt , T. Pursimo , L. O. Takalo , A. Sillanpaeae , K. Jaeger

In this paper, we report our multiwavelength observations of subarcsecond blobs in coronal jets. In AR 12149, a C5.5 circular-ribbon flare occurred on 2014 August 24. Two jets (jet1 and jet2) were related to the flare. Jet1 appeared first.…

Solar and Stellar Astrophysics · Physics 2019-01-23 Q. M. Zhang , L. Ni

Penumbral filaments and light bridges are prominent structures inside sunspots and are important for understanding the nature of sunspot magnetic fields and magneto-convection underneath. We investigate an interesting event where several…

Solar and Stellar Astrophysics · Physics 2020-10-07 Y. J. Hou , T. Li , S. H. Zhong , S. H. Yang , Y. L. Guo , X. H. Li , J. Zhang , Y. Y. Xiang

Light bridges (LBs) are among the most striking sub-structures in sunspots, where various activities have been revealed by recent high-resolution observations from the Interface Region Imaging Spectrograph (IRIS). According to the variety…

Solar and Stellar Astrophysics · Physics 2022-04-20 Yijun Hou , Ting Li , Shuhong Yang , Shin Toriumi , Yilin Guo , Jun Zhang

Space-based observations show that the solar atmosphere from the solar chromosphere to the solar corona is filled with small-scale jets and is linked with small-scale explosions. These jets may be produced by mechanisms similar to that of…

Solar and Stellar Astrophysics · Physics 2024-02-20 Kunwar Alkendra Pratap Singh , Keisuke Nishida , Kazunari Shibata

We analyse a sequence of high-resolution spectropolarimetric observations of a sunspot taken at the 1-m SST, to determine the nature of flux emergence in a light bridge and the processes related to its evolution in the photosphere and…

Solar and Stellar Astrophysics · Physics 2015-10-21 Rohan E. Louis , Luis R. Bellot Rubio , Jaime de la Cruz Rodriguez , Hector Socas-Navarro , Ada Ortiz

We study the polarization signals and physical parameters of penumbral microjets (PMJs) by using high spatial resolution data taken in the Fe I 630 nm pair, Ca II 854.2 nm and Ca II K lines with the CRISP and CHROMIS instruments at the…

Solar and Stellar Astrophysics · Physics 2019-01-16 S. Esteban Pozuelo , J. de la Cruz Rodriguez , A. Drews , L. Rouppe van der Voort , G. B. Scharmer , M. Carlsson

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

Using high spatiotemporal resolution, multi-wavelength observations from the New Vacuum Solar Telescope (NVST) and the Solar Dynamics Observatory (SDO), we present a detailed analysis of a small-scale chromospheric jet driven by…

Solar and Stellar Astrophysics · Physics 2025-07-03 Zehao Tang , Yuandeng Shen , Chengrui Zhou , Surui Yao , Dongxu Liu , Xiaobo Li