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相关论文: Microwave and Hard X-Ray Observations of the 2017 …

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The 2014 March 29 X1 solar flare (SOL20140329T17:48) produced bright continuum emission in the far- and near-ultraviolet (NUV) and highly asymmetric chromospheric emission lines, providing long-sought constraints on the heating mechanisms…

太阳与恒星天体物理 · 物理学 2017-02-17 Adam F. Kowalski , Joel C. Allred , Adrian N. Daw , Gianna Cauzzi , Mats Carlsson

We present observations of the 2002 September 30 white-light flare, in which the optical continuum emission near the Halpha line is enhanced by ~10%. The continuum emission exhibits a close temporal and spatial coincidence with the hard…

天体物理学 · 物理学 2009-11-13 Q. R. Chen , M. D. Ding

The discovery of hard X-rays from tops of flaring loops by the HXT of YOHKOH represents a significant progress in the understanding of solar flares. This report describes the properties of 20 limb flares observed by YOHKOH from October 1991…

天体物理学 · 物理学 2007-05-23 Vahé Petrosian

We investigate the signature of the photospheric albedo contribution in solar flare hard X-ray spectra, the effect of low energy cutoffs in electron spectra, and the directivity of hard X-ray emission. Using Ramaty High Energy Solar…

天体物理学 · 物理学 2008-11-26 J. Kasparova , E. P. Kontar , J. C. Brown

A popular scenario for electron acceleration in solar flares is transit-time damping of low-frequency MHD waves excited by reconnection and its outflows. The scenario requires several processes in sequence to yield energetic electrons of…

天体物理学 · 物理学 2015-06-24 Arnold O. Benz , Pascal Saint-Hilaire

This thesis strives to improve our understanding of solar activity, specifically the behaviour of solar flares and coronal mass ejections. An investigation into the hydrodynamic evolution of a confined solar flare was carried out using…

太阳与恒星天体物理 · 物理学 2012-10-19 Claire L. Raftery

Flare loops form an integral part of eruptive events, being detected in the range of temperatures from X-rays down to cool chromospheric-like plasmas. While the hot loops are routinely observed by the Solar Dynamics Observatory's…

太阳与恒星天体物理 · 物理学 2020-01-08 Július Koza , David Kuridze , Petr Heinzel , Sonja Jejčič , Huw Morgan , Maciej Zapiór

In this paper, we present a multi-wavelength analysis of an eruptive white-light M3.2 flare which occurred in active region NOAA 10486 on November 1, 2003. Excellent set of high resolution observations made by RHESSI and TRACE provide clear…

太阳与恒星天体物理 · 物理学 2015-05-30 Bhuwan Joshi , Astrid M. Veronig , Jeongwoo Lee , Su-Chan Bong , Sanjiv K. Tiwari , Kyung-Suk Cho

The mid-infrared (mid-IR) range has been mostly unexplored for the investigation of solar flares. It is only recently that new mid-IR flare observations have begun opening a new window into the response and evolution of the solar…

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,…

Extreme-ultraviolet late phase (ELP) refers to the second extreme-ultraviolet (EUV) radiation enhancement observed in certain solar flares, which usually occurs tens of minutes to several hours after the peak of soft X-ray emission. The…

太阳与恒星天体物理 · 物理学 2022-06-22 Jiale Zhang , Bin Chen , Sijie Yu , Hui Tian , Yuqian Wei , Hechao Chen , Guangyu Tan , Yingjie Luo , Xingyao Chen

We present first results of a solar radio event observed with the Owens Valley Radio Observatory Long Wavelength Array (OVRO-LWA) at metric wavelengths. We examine a complex event consisting of multiple radio sources/bursts associated with…

太阳与恒星天体物理 · 物理学 2021-01-27 Sherry Chhabra , Dale E. Gary , Gregg Hallinan , Marin M. Anderson , Bin Chen , Lincoln J. Greenhill , Danny C. Price

In order to constrain the evolutionary history of the Milky Way, we hunt for faint RR Lyrae stars (RRLs) using Dark Energy Camera data from the High cadence Transient Survey (HiTS) and the Halo Outskirts With Variable Stars (HOWVAST)…

Filament eruptions and hard X-ray (HXR) source motions are commonly observed in solar flares, which provides critical information on the coronal magnetic reconnection. This Letter reports an event on 2005 January 15, in which we found an…

太阳与恒星天体物理 · 物理学 2015-05-19 Chang Liu , Jeongwoo Lee , Ju Jing , Rui Liu , Na Deng , Haimin Wang

We investigated in detail the M5.8 class solar flare that occurred on 2023-03-06. This flare was one of the first strong flares observed by the Siberian Radioheliograph in the microwave range and the Advanced Space-based Solar Observatory…

太阳与恒星天体物理 · 物理学 2024-05-30 Alexey Kuznetsov , Zhao Wu , Sergey Anfinogentov , Yang Su , Yao Chen

We have systematically investigated ultraviolet (UV) emission from molecular hydrogen (H$_{2}$) using the Interface Region Imaging Spectrometer (IRIS), during three X-ray flares of C5.1, C9.7 and X1.0 classes on Oct. 25, 2014. Significant…

太阳与恒星天体物理 · 物理学 2023-09-15 Sargam M. Mulay , Lyndsay Fletcher , Hugh Hudson , Nicolas Labrosse

We investigated the three-dimensional (3D) magnetic structures and dynamics responsible for particle acceleration in an X7.1-class flare that occurred on October 1, 2024, in NOAA active region 13842. We combined stereoscopic hard X-ray…

太阳与恒星天体物理 · 物理学 2026-02-11 Keitarou Matsumoto , Satoshi Inoue , Meiqi Wang , Säm Krucker , Satoshi Masuda , Muriel Zoë Stiefel , Jeongwoo Lee , Bin Chen , Haimin Wang

Drifting pulsation structures (DPSs) are important radio fine structures usually observed at the beginning of eruptive solar flares. It has been suggested that DPSs carry important information on the energy release processes in solar…

太阳与恒星天体物理 · 物理学 2020-03-30 M. Karlicky , B. Chen , D. E. Gary , J. Kasparova , J. Rybak

We report the intriguing large-scale dynamic phenomena associated with the M6.5 flare~(SOL2015-06-22T18:23) in NOAA active region 12371, observed by RHESSI, Fermi, and the Atmospheric Image Assembly (AIA) and Magnetic Imager (HMI) on the…

太阳与恒星天体物理 · 物理学 2017-06-28 Ju Jing , Rui Liu , Mark C. M. Cheung , Jeongwoo Lee , Yan Xu , Chang Liu , Chunming Zhu , Haimin Wang

Solar flare hard X-rays (HXRs) are produced as bremsstrahlung when an accelerated population of electrons interacts with the dense chromospheric plasma. HXR observations presented by using the Ramaty High-Energy Solar Spectroscopic Imager…

太阳与恒星天体物理 · 物理学 2014-11-20 A. O'Flannagain , J. C. Brown , P. T. Gallagher