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Open AccessJournal ArticleDOI

An Observational Overview of Solar Flares

TLDR
An overview of solar flares and associated phenomena, drawing upon a wide range of observational data primarily from the RHESSI era, is presented in this paper, where the focus is on different areas of flare phenomena (footpoints and ribbons, coronal sources, relationship to coronal mass ejections) and their interconnections.
Abstract
We present an overview of solar flares and associated phenomena, drawing upon a wide range of observational data primarily from the RHESSI era Following an introductory discussion and overview of the status of observational capabilities, the article is split into topical sections which deal with different areas of flare phenomena (footpoints and ribbons, coronal sources, relationship to coronal mass ejections) and their interconnections We also discuss flare soft X-ray spectroscopy and the energetics of the process The emphasis is to describe the observations from multiple points of view, while bearing in mind the models that link them to each other and to theory The present theoretical and observational understanding of solar flares is far from complete, so we conclude with a brief discussion of models, and a list of missing but important observations

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Citations
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Journal ArticleDOI

Differential Emission Measures from the Regularized Inversion of Hinode and SDO data

TL;DR: In this article, an enhanced regularization algorithm is proposed to constrain the ill-posed inverse problem that is determining the differential emission measures (DEMs) from solar observations, which is able to recover the DEM from simulated data of a variety of model DEMs (single Gaussian, multiple Gaussians and CHIANTI DEM models).
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Implications of X-ray Observations for Electron Acceleration and Propagation in Solar Flares

TL;DR: In this article, the authors review the current understanding of electron acceleration, energy loss, and propagation in solar flares, and discuss the implications of these new results for the collisional thick-target model, for general flare models, and for future flare studies.
Journal ArticleDOI

The standard flare model in three dimensions - I. Strong-to-weak shear transition in post-flare loops

TL;DR: In this article, the strong-to-weak shear transition in post-flare loops, and the time-evolution of the geometry of photospheric electric currents, which occur during the development of eruptive flares are investigated.
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Imaging coronal magnetic-field reconnection in a solar flare

TL;DR: In this article, the authors presented extreme ultraviolet and X-ray observations of a solar flare showing magnetic reconnection with a level of clarity not previously achieved, including inflowing cool loops and newly formed outflowing hot loops.
Journal ArticleDOI

Implications of X-ray Observations for Electron Acceleration and Propagation in Solar Flares

TL;DR: In this paper, the authors review the current understanding of electron acceleration, energy loss, and propagation in solar flares, and discuss the implications of these new results for the collisional thick-target model, for general flare models, and for future flare studies.
References
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Journal ArticleDOI

Allen's astrophysical quantities

TL;DR: In this paper, Cox et al. introduce a general constant and unit model for general constants and units, and discuss atoms and molecules in the solar system, including Planets and Satellites.
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The Large Angle Spectroscopic Coronagraph (LASCO): Visible light coronal imaging and spectroscopy

TL;DR: The Large Angle Spectroscopic Coronagraph (LASCO) is a triple coronagraph being jointly developed for the Solar and Heliospheric Observatory (SOHO) mission as discussed by the authors.
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Structure of the solar chromosphere. III. Models of the EUV brightness components of the quiet sun

TL;DR: In this paper, the solution of the non-LTE optically thick transfer equations for hydrogen, carbon, and other constituents to determine semi-empirical models for six components of the quiet solar chromosphere was investigated.
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The Solar Oscillations Investigation - Michelson Doppler Imager

TL;DR: The Michelson Doppler Imager (MDI) as mentioned in this paper was used to probe the interior of the Sun by measuring the photospheric manifestations of solar oscillations, revealing the static and dynamic properties of the convection zone and core.
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CHIANTI - an atomic database for emission lines - I. Wavelengths greater than 50 Å

TL;DR: The CHIANTI database as mentioned in this paper is a set of atomic data and transition probabilities necessary to calculate the emission line spectrum of astrophysical plasmas, including atomic energy levels, atomic radiative data such as wavelengths, weighted oscillator strengths and A values, and electron collisional excitation rates.
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