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Source imaging of solar radio bursts can be used to track energetic electrons and associated magnetic structures. Here we present a combined analysis of data at different wavelengths for an eruption associated with a moving type-IV (t-IVm)…

太阳与恒星天体物理 · 物理学 2019-01-09 V. Vasanth , Yao Chen , Maoshui Lv , Hao Ning , Chuangyang Li , Shiwei Feng , Zhao Wu , Guohui Du

The magnetic and convective nature of the Sun's photosphere provides a unique platform from which generated waves can be modelled, observed, and interpreted across a wide breadth of spatial and temporal scales. As oscillations are generated…

太阳与恒星天体物理 · 物理学 2020-12-01 David B. Jess , Peter H. Keys , Marco Stangalini , Shahin Jafarzadeh

We present the first large-scale 3D map of interstellar dust temperature. We build upon existing 3D reddening maps derived from starlight absorption (Bayestar19), covering 3/4 of the sky. Starting with the column density for each of 500…

星系天体物理 · 物理学 2022-11-16 Ioana A. Zelko , Douglas P. Finkbeiner , Albert Lee , Gregory Green

The brightness of the emission from coronal loops in the solar atmosphere is strongly dependent on the temperature and density of the confined plasma. After a release of energy, these loops undergo a heating and upflow phase, followed by a…

太阳与恒星天体物理 · 物理学 2019-03-20 C. D. Johnston , S. J. Bradshaw

The specification of the upper atmosphere strongly relies on solar proxies that can properly reproduce the solar energetic input in the UV. Whilst the microwave flux at 10.7 cm (also called F10.7 index) has been routinely used as a solar…

太阳与恒星天体物理 · 物理学 2014-02-18 Thierry Dudok de Wit , Sean Bruinsma , Kiyoto Shibasaki

We introduce a technique based on infrared thermal emission, termed depth thermography, that can remotely measure the temperature distribution beneath the surface of certain objects. Depth thermography utilizes the thermal-emission spectrum…

光学 · 物理学 2019-08-22 Yuzhe Xiao , Chenghao Wan , Alireza Shahsafi , Jad Salman , Mikhail A. Kats

Multi-wavelength solar images in the EUV are routinely used for analysing solar features such as coronal holes, filaments, and flares. However, images taken in different bands often look remarkably similar as each band receives…

太阳与恒星天体物理 · 物理学 2015-06-04 T. Dudok de Wit , S. Moussaoui , C. Guennou , F. Auchère , G. Cessateur , M. Kretzschmar , L. A. Vieira , F. F. Goryaev

In high-resolution solar physics, the volume and complexity of photometric, spectroscopic, and polarimetric ground-based data significantly increased in the last decade reaching data acquisition rates of terabytes per hour. This is driven…

天体物理仪器与方法 · 物理学 2018-05-23 C. Denker , C. Kuckein , M. Verma , S. J. González Manrique , A. Diercke , H. Enke , J. Klar , H. Balthasar , R. E. Louis , E. Dineva

Time-resolved fluorescence imaging is a key tool in biomedical applications, as it allows to non-invasively obtain functional and structural information. However, the big amount of collected data introduces challenges in both acquisition…

The infrared solar spectrum contains a wealth of physical data about the Sun and is being explored using modern detectors and technology with new ground-based solar telescopes. One such instrument will be the ground-based Cryogenic Near-IR…

太阳与恒星天体物理 · 物理学 2022-06-22 Aatiya Ali , Alin Paraschiv , Kevin Reardon , Philip Judge

Observations of the dynamics of solar coronal structures are necessary to investigate space weather phenomena and global heating of the corona. The profiles of high temperature lines emitted by the hot plasma are usually integrated by…

太阳与恒星天体物理 · 物理学 2021-10-27 J. -M. Malherbe , P. Mein , F. Sayede , P. Rudawy , K. Phillips , F. Keenan , J. Rybak

We have developed, built, and tested a new feed design for interferometric radio telescopes with "large-$N$, small-$D$" designs. Those arrays require low-cost and low-complexity feeds for mass production on reasonable timescales and…

天体物理仪器与方法 · 物理学 2025-09-17 Vincent MacKay , Mark Lai , Peter Shmerko , Dallas Wulf , Leonid Belostotski , Keith Vanderlinde

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

This paper summarizes some recent results in the low-frequency radio physics of the Sun. The spatial domain covers the space from the outer corona to the orbit of Earth. The results obtained make use of radio dynamic spectra and white-light…

太阳与恒星天体物理 · 物理学 2020-08-24 Nat Gopalswamy

The internal dynamics of the Sun generate magnetic and plasma structures in the photosphere and overlying atmosphere across a wide range of spatial scales. Identifying the critical spatial scale is essential for interpreting physical…

太阳与恒星天体物理 · 物理学 2026-04-14 Ananya Hore , Prantika Bhowmik

Hyperspectral imaging has become a significant source of valuable data for astronomers over the past decades. Current instrumental and observing time constraints allow direct acquisition of multispectral images, with high spatial but low…

计算机视觉与模式识别 · 计算机科学 2019-12-30 Claire Guilloteau , Thomas Oberlin , Olivier Berné , Nicolas Dobigeon

Context. Tracing wave activity from the photosphere to the corona has important implications for coronal heating and prediction of the solar wind. Despite extensive theory and simulations, the detection of waves in realistic MHD simulations…

太阳与恒星天体物理 · 物理学 2025-08-28 George Cherry , Boris Gudiksen , Adam J. Finley

The Sun's proximity offers us a unique opportunity to study in detail the physical processes on a star's surface; however, the highly dynamic nature of the stellar surface -- in particular, energetic eruptions such as flares and coronal…

Targeting dynamic spatially-extended phenomena in the upper solar atmosphere, a new instrument concept has been developed and tested at the Dunn Solar Telescope in New Mexico, USA, that provides wide-field, rapid-scanning, high-resolution…

天体物理仪器与方法 · 物理学 2018-09-17 Thomas A. Schad , Haosheng Lin

The coming decade will see the routine use of solar data of unprecedented spatial and spectral resolution, time cadence, and completeness. To capitalize on the new (or soon to be available) facilities such as SDO, ATST and FASR, and the…