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Related papers: IRIS NUV diagnostics for Ellerman bombs: spectral …

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Ellerman bombs (EBs) are a kind of solar activities that is suggested to occur in the lower atmosphere. Recent observations using the Interface Region Imaging Spectrograph (IRIS) show connections of EBs and IRIS bombs (IBs), implying that…

Solar and Stellar Astrophysics · Physics 2017-04-03 Jie Hong , M. D. Ding , Wenda Cao

Recent observations by the Interface Region Imaging Spectrograph (IRIS) have revealed pockets of hot gas ($\sim$2--8$\times$10$^{4}$ K) potentially resulting from magnetic reconnection in the partially ionized lower solar atmosphere (IRIS…

Solar and Stellar Astrophysics · Physics 2016-06-21 Hui Tian , Zhi Xu , Jiansen He , Chad Madsen

Ellerman bombs (EBs) are small-scale intense brightenings in H$\alpha$ wing images, which are generally believed to be signatures of magnetic reconnection events around the temperature minimum region of the solar atmosphere. They have a…

Solar and Stellar Astrophysics · Physics 2019-05-01 Yajie Chen , Hui Tian , Hardi Peter , Tanmoy Samanta , Vasyl Yurchyshyn , Haimin Wang , Wenda Cao , Linghua Wang , Jiansen He

Ellerman bombs (EBs) are observable signatures of photospheric small-scale magnetic reconnection events. The reliable automatic detection of EBs would enable the study of the impact of magnetic reconnection on the Sun's dynamics. We aim to…

Solar and Stellar Astrophysics · Physics 2025-07-02 I. J. Soler Poquet , C. J. Díaz Baso , L. H. M. Rouppe van der Voort , G. J. M. Vissers

Ellerman bombs are transient brightenings of the extended wings of the solar Balmer lines in emerging active regions. We describe their properties in the ultraviolet lines sampled by the Interface Region Imaging Spectrograph (IRIS), using…

Solar and Stellar Astrophysics · Physics 2015-10-08 Gregal J. M. Vissers , Luc H. M. Rouppe van der Voort , Robert J. Rutten , Mats Carlsson , Bart De Pontieu

We study the H$\alpha$ and Ca II 8542 \r{A} line spectra of four typical Ellerman bombs (EBs) in active region NOAA 11765 on 2013 June 6, observed with the Fast Imaging Solar Spectrograph installed at the 1.6 meter New Solar Telescope at…

Solar and Stellar Astrophysics · Physics 2014-08-12 Jie Hong , M. D. Ding , Ying Li , Cheng Fang , Wenda Cao

Ellerman bombs (EBs) are tiny brightenings often observed near sunspots. The most impressive characteristic of the EB spectra is the two emission bumps in both wings of the H$\alpha$ and \ion{Ca}{II} 8542 {\AA} lines. High-resolution…

Solar and Stellar Astrophysics · Physics 2015-09-16 Z. Li , C. Fang , Y. Guo , P. F. Chen , Z. Xu , W. Cao

Ellerman bombs (EBs) are short-lived and compact structures that are observed well in the wings of the hydrogen H-alpha line. EBs are also observed in the chromospheric CaII lines and in UV continua. H-alpha line profiles of EBs show a deep…

Solar and Stellar Astrophysics · Physics 2015-06-22 Arkadiusz Berlicki , Petr Heinzel

Context. Ellerman bombs (EBs) are short-lived emission features, characterized by extended wing emission in hydrogen Balmer lines. Until now, no distinct signature of EBs has been found in the He I 10830 {\AA} line, and conclusive…

Solar and Stellar Astrophysics · Physics 2017-02-01 Tine Libbrecht , Jayant Joshi , Jaime de la Cruz Rodríguez , Jorrit Leenaarts , Andrés Asensio Ramos

Ellerman bombs (EBs) are small and short-lived magnetic reconnection events in the lower solar atmosphere, most commonly reported in the line wings of the H$\alpha$ line. These events are thought to play a role in heating the solar…

Solar and Stellar Astrophysics · Physics 2025-09-12 A. Faryad , A. G. M. Pietrow , M. Verma , C. Denker

The emergence of magnetic flux into the solar atmosphere produces, among other phenomena, Ellerman bombs (EBs), which are observed in H alpha and are due to magnetic reconnection in the photosphere below the chromospheric canopy. Signs of…

Solar and Stellar Astrophysics · Physics 2020-01-15 Ada Ortiz , Viggo H. Hansteen , Daniel Nóbrega-Siverio , Luc Rouppe van der Voort

Ellerman bombs and UV bursts are transient brightenings that are ubiquitously observed in the lower atmospheres of active and emerging flux regions. Here we present inversion results of SST/CRISP and CHROMIS, as well as IRIS data of such…

Solar and Stellar Astrophysics · Physics 2019-07-10 G. J. M. Vissers , J. de la Cruz Rodriguez , T. Libbrecht , L. H. M. Rouppe van der Voort , G. B. Scharmer , M. Carlsson

Ellerman bombs (EBs) and UV bursts are both small-scale solar activities that occur in active regions. They are now believed to form at different heights in the lower atmosphere. In this paper, we use one-dimensional radiative hydrodynamic…

Solar and Stellar Astrophysics · Physics 2021-11-09 Jie Hong , Ying Li , M. D. Ding , Qi Hao

The properties of Ellerman bombs (EBs), small-scale brightenings in the H-alpha line wings, have proved difficult to establish due to their size being close to the spatial resolution of even the most advanced telescopes. Here, we aim to…

Solar and Stellar Astrophysics · Physics 2013-01-09 C. J. Nelson , J. G. Doyle , R. Erdelyi , Z. Huang , M. Madjarska , M. Mathioudakis , S. Mumford , K. Reardon

Ellerman bombs (EBs) have been widely studied over the past two decades; however, only recently have counterparts of these events been observed in the quiet-Sun. The aim of this article is to further understand small-scale quiet-Sun…

Solar and Stellar Astrophysics · Physics 2017-08-16 C. J. Nelson , N. Freij , A. Reid , R. Oliver , M. Mathioudakis , R. Erdélyi

Magnetic reconnection in the deep solar atmosphere can give rise to enhanced emission in the Balmer hydrogen lines, a phenomenon known as Ellerman bombs (EBs). It is most common to observe EBs in the H-alpha and H-beta lines. High quality…

Solar and Stellar Astrophysics · Physics 2024-01-23 L. Rouppe van der Voort , J. Joshi , K. Krikova

We use high-resolution imaging spectroscopy with the Swedish 1-m Solar Telescope (SST) to study the transient brightenings of the wings of the Balmer Halpha line in emerging active regions that are called Ellerman bombs. Simultaneous…

Solar and Stellar Astrophysics · Physics 2015-06-16 Gregal J. M. Vissers , Luc H. M. Rouppe van der Voort , Robert J. Rutten

Ellerman bombs (EBs) have been widely studied in recent years due to their dynamic, explosive nature and apparent links to the underlying photospheric magnetic field implying that they may be formed by magnetic reconnection in the…

Solar and Stellar Astrophysics · Physics 2015-06-23 C. J. Nelson , E. M. Scullion , J. G. Doyle , N. Freij , R. Erdélyi

Ellerman bombs are bright emission features observed in the wings of H$\alpha$, usually in the vicinity of magnetic concentrations. Here we show that they can also be detected in the Ca II infrared triplet lines, which are easier to…

Recent observations from the Interface Region Imaging Spectrograph (IRIS) appear to show impulsive brightenings in high temperature lines, which when combined with simultaneous ground based observations in H$\alpha$, appear co-spatial to…

Solar and Stellar Astrophysics · Physics 2017-02-08 A. Reid , M. Mathioudakis , A. Kowalski , J. G. Doyle , J. C. Allred
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