中文
相关论文

相关论文: The Wave Properties of Coronal Bright Fronts Obser…

200 篇论文

Characterising the large-scale structure and plasma properties of the inner corona is crucial to understand the source and subsequent expansion of the solar wind and related space weather effects. Here we apply a new coronal rotational…

太阳与恒星天体物理 · 物理学 2020-04-22 Huw Morgan , Anthony C. Cook

Although the origins of slow solar wind are unclear, there is increasing evidence that at least some of it is released in a steady state on over-expanded coronal hole magnetic field lines. This type of slow wind has similar properties to…

空间物理 · 物理学 2020-01-28 D. Stansby , L. Matteini , T. S. Horbury , D. Perrone , R. D'Amicis , L. Berčič

The radio signature of a shock travelling through the solar corona is known as a type II solar radio burst. In rare cases these bursts can exhibit a fine structure known as `herringbones', which are a direct indicator of particle…

太阳与恒星天体物理 · 物理学 2015-09-23 Eoin P. Carley , Hamish Reid , Nicole Vilmer , Peter T. Gallagher

We report on the variability of rotation periods of solar coronal layers with respect to temperature (or, height). For this purpose, we have used the observations from Atmospheric Imaging Assembly (AIA) telescope on board Solar Dynamics…

太阳与恒星天体物理 · 物理学 2020-02-19 Jaidev Sharma , Brajesh Kumar , Anil K. Malik , Hari Om Vats

We present the first observations of a global coronal wave ("EIT wave") from the two Solar Terrestrial Relations Observatory (STEREO) satellites in quadra- ture. The wave's initiation site was at the disk center in STEREO-B and precisely on…

太阳与恒星天体物理 · 物理学 2015-05-14 I. W. Kienreich , M. Temmer , A. M. Veronig

Recent observations have demonstrated that waves which are capable of carrying large amounts of energy are ubiquitous throughout the solar corona. However, the question of how this wave energy is dissipated (on which time and length scales)…

太阳与恒星天体物理 · 物理学 2014-11-20 Jiajia Liu , Scott W. McIntosh , Ineke De Moortel , James Threlfall , Christian Bethge

The formation of the observed core-halo feature in the solar wind electron velocity distribution function is a long-time puzzle. In this letter based on the current knowledge of nanoflares we show that the nanoflare-accelerated electron…

太阳与恒星天体物理 · 物理学 2015-06-23 H. Che , M. Goldstein

On 2014 March 29, an intense solar flare classified as X1.0 occurred in the active region 12017. Several associated phenomena accompanied this event, among them a fast-filament eruption, large-scale propagating disturbances in the corona…

太阳与恒星天体物理 · 物理学 2019-09-25 Denis P. Cabezas , Ayumi Asai , Kiyoshi Ichimoto , Takahito Sakaue , Satoru UeNo , Jose K. Ishitsuka , Kazunari Shibata

In this paper we show that the phase mixing of continuum Alfv\'{e}n waves and/or continuum slow waves in magnetic structures of the solar atmosphere as, e.g., coronal arcades, can create the illusion of wave propagation across the magnetic…

太阳与恒星天体物理 · 物理学 2015-10-21 T. Kaneko , M. Goossens , R. Soler , J. Terradas , T. Van Doorsselaere , T. Yokoyama , A. N. Wright

Broad-band images of the solar chromosphere in the Ca II H&K line cores around active regions are covered with fine bright elongated structures called bright fibrils. The mechanisms that form these structures and cause them to appear bright…

太阳与恒星天体物理 · 物理学 2020-05-06 Sepideh Kianfar , Jorrit Leenaarts , Sanja Danilovic , Jaime de la Cruz Rodríguez , Carlos José Díaz Baso

We present a method to derive outflow velocities in the solar corona using different data sets including solar wind mass flux coming from the SWAN/SOHO instrument, electron density values from LASCO-C2 and interplanetary solar wind…

天体物理学 · 物理学 2009-11-13 E. Quemerais , R. Lallement , D. Koutroumpa , P. Lamy

Global extreme ultraviolet (EUV) waves are spectacular traveling disturbances in the solar corona associated with energetic eruptions such as coronal mass ejections (CMEs) and flares. Over the past 15 years, observations from three…

太阳与恒星天体物理 · 物理学 2014-05-07 Wei Liu , Leon Ofman

This work reports a novel plasma wave observation in the near-Sun solar wind: frequency-dispersed ion acoustic waves. Similar waves were previously reported in association with interplanetary shocks or planetary bow shocks, but the waves…

太阳与恒星天体物理 · 物理学 2024-04-24 David M. Malaspina , Robert E. Ergun , Iver H. Cairns , Benjamin Short , Jaye L. Verniero , Cynthia Cattell , Roberto Livi

Coronal seismology is a diagnostic tool used in solar physics for measuring parameters that are otherwise hard to measure; of these parameters, magnetic field values are arguably the most important. The parameters are inferred by combining…

太阳与恒星天体物理 · 物理学 2018-04-17 N. Magyar , T. Van Doorsselaere

In situ measurements of the fast solar wind reveal non-thermal distributions of electrons, protons and, minor ions extending from $0.3$ AU to the heliopause. The physical mechanisms responsible for these non-thermal properties and the…

太阳与恒星天体物理 · 物理学 2018-03-21 Natasha L. S. Jeffrey , Michael Hahn , Daniel W. Savin , Lyndsay Fletcher

The motion of faint propagating disturbances (PD) in the solar corona reveals an intricate structure which must be defined by the magnetic field. Applied to quiet Sun observations by the Atmospheric Imaging Assembly (AIA)/Solar Dynamics…

太阳与恒星天体物理 · 物理学 2022-07-20 Huw Morgan , Marianna Korsos

Solar radio observations provide a unique diagnostic of the outer solar atmosphere. However, the inhomogeneous turbulent corona strongly affects the propagation of the emitted radio waves, so decoupling the intrinsic properties of the…

太阳与恒星天体物理 · 物理学 2018-02-22 E. P. Kontar , S. Yu , A. A. Kuznetsov , A. G. Emslie , B. Alcock , N. L. S. Jeffrey , V. N. Melnik , N. H. Bian , P. Subramanian

We report the discovery and characterization of high-speed (>100 km/s) horizontal flows in solar active regions, making use of the Sun-as-a-star spectroscopy in the range 5-105 nm provided by the EVE (Extreme Ultraviolet Variability…

We study the propagation properties of slow magneto-acoustic waves in a multi-thermal coronal loop using a 3D MHD model, for the first time. A bundle of 33 vertical cylinders, each of 100{\,}km radius, randomly distributed over a circular…

太阳与恒星天体物理 · 物理学 2024-06-06 S. Krishna Prasad , T. Van Doorsselaere

We report radial speed evolution of interplanetary coronal mass ejections (ICMEs) detected by the SOHO/LASCO coronagraph, interplanetary scintillation (IPS) at 327 MHz, and in-situ observations. In this study, we analyze solar wind…

太阳与恒星天体物理 · 物理学 2014-12-09 Tomoya Iju , Munetoshi Tokumaru , Ken'ichi Fujiki