Solar Physics最新文献

{"title":"Linear Analysis of Shear-Flow Instabilities in a Prominence-Corona Interface with Ambipolar Diffusion","authors":"Llorenç Melis,&nbsp;Roberto Soler","doi":"10.1007/s11207-025-02481-5","DOIUrl":"10.1007/s11207-025-02481-5","url":null,"abstract":"<div><p>Observations have shown the presence of the Kelvin–Helmholtz instability (KHi) in solar prominences. Effects due to partial ionization of the prominence plasma may influence the KHi onset. We study the triggering of the KHi in an interface model that consists of a partially ionized prominence region and a fully ionized coronal region, with a uniform magnetic field parallel to the interface. There is a longitudinal flow in the prominence region. The plasma is compressible and the role of ambipolar diffusion, which accounts for collisions between charges and neutrals, is taken into account in the prominence plasma. We derive the dispersion relation of linear perturbations on the interface and analyze some limit cases analytically. Numerical results are obtained for realistic prominence parameters. We find that compressibility and gas pressure are important in determining the unstable flow velocities, specially in the range of sub-Alfvénic flows that are consistent with the observations. The ambipolar diffusion has a generally destabilizing influence and reduces the threshold flow velocity for the KHi onset.</p></div>","PeriodicalId":777,"journal":{"name":"Solar Physics","volume":"300 5","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11207-025-02481-5.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144117698","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Visible Emission Line Coronagraph (VELC) on Board Aditya-L1","authors":"Jagdev Singh,&nbsp;R. Ramesh,&nbsp;B. Raghavendra Prasad,&nbsp;V. Muthu Priyal,&nbsp;K. Sasikumar Raja,&nbsp;S. N. Venkata,&nbsp;P. U. Kamath,&nbsp;V. Natarajan,&nbsp;S. Pawankumar,&nbsp;V. U. Sanal Krishnan,&nbsp;P. Savarimuthu,&nbsp;Shalabh Mishra,&nbsp;Varun Kumar,&nbsp;Chavali Sumana,&nbsp;S. Bhavana Hegde,&nbsp;D. Utkarsha,&nbsp;Amit Kumar,&nbsp;S. Nagabhushana,&nbsp;S. Kathiravan,&nbsp;P. Vemareddy,&nbsp;C. Kathiravan,&nbsp;K. Nagaraju,&nbsp;Belur Ravindra,&nbsp;Wageesh Mishra","doi":"10.1007/s11207-025-02477-1","DOIUrl":"10.1007/s11207-025-02477-1","url":null,"abstract":"<div><p>Aditya-L1, India’s first dedicated mission to study the Sun and its atmosphere from the Sun-Earth Lagrangian L1 location was successfully launched on September 2, 2023. It carries seven payloads. The Visible Emission Line Coronagraph (VELC) is a major payload on Aditya-L1. VELC is designed to carry out imaging and spectroscopic observations (the latter in three emission lines of the corona), simultaneously. Images of the solar corona in the continuum at 5000 Å, with a field of view (FoV) from 1.05 <span>(mathrm{R}_{odot })</span> to 3 <span>(mathrm{R}_{odot })</span> can be obtained at variable intervals depending on the data volume that can be downloaded. Spectroscopic observations of the solar corona in three emission lines, namely 5303 Å Fe<span>xiv</span>, 7892 Å Fe<span>xi</span>, and 10,747 Å Fe<span>xiii</span> are possible simultaneously, with different exposure times and cadence. Four slits, each of width 50 <span>({ mu })</span>m, separated by 3.75 mm help to simultaneously obtain spectra at four positions in the solar corona in all the aforementioned lines. A Linear Scan Mechanism (LSM) makes it possible to scan the solar corona up to ± 1.5 <span>(mathrm{R}_{odot })</span>. The instrument has the facility to carry out spectropolarimetric observations at 10,747 Å also in the FoV range 1.05 – 1.5 <span>(mathrm{R}_{odot })</span>. Various components of the instrument were tested interferometrically on the optical bench before installation. The individual components were aligned and performance of the payload was checked in the laboratory using a laser source and tungsten lamp. Wavelength calibration of the instrument was verified using the Sun as a light source. All the detectors were calibrated for different parameters such as dark current and its variation with exposure time. Here, we discuss the various features of the VELC, alignment, calibration, performance, possible observations, initial data analysis, and results of initial tests conducted in-orbit.</p></div>","PeriodicalId":777,"journal":{"name":"Solar Physics","volume":"300 5","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144100266","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Potential Field Source Surface and Non-linear Force-Free Field Extrapolation to Model Magnetic Field Structure for a Giant Solar Filament","authors":"Abbi S. Demissie,&nbsp;Tilaye Tadesse,&nbsp;Araya Asfaw,&nbsp;Tong Shi","doi":"10.1007/s11207-025-02474-4","DOIUrl":"10.1007/s11207-025-02474-4","url":null,"abstract":"<div><p>Solar filaments are intriguing structures suspended in the solar corona at heights up to 100 Mm above the chromosphere, but they are made of chromospheric material which is one hundred times cooler and denser than the coronal material. Studying filament magnetic field structures, magnetic energy and electric current density is crucial to know its stability, because unstable conditions can result in explosive events like flares and coronal mass ejections (CMEs). A few recent studies have been conducted to model large-scale filaments in the quiet Sun though the majority of studies focus on modeling small-scale active region filaments. This study is the first to use potential field source surface (PFSS) and non-linear force-free field (NLFFF) models in spherical geometry to study a giant filament (with length more than 800 Mm) along a polarity inversion line (PIL) in a weak-field region (with photospheric field region of ≈ 50 G). The two modeling methods are applied to data obtained from a giant filament observation on February 10, 2015 with preprocessing of photospheric full-disk vector magnetograms from the Helioseismic and Magnetic Imager (HMI) and Vector Spectromagnetograph (VSM) using optimization procedure to make the boundary data more consistent with the force-free principle. The large-scale magnetic configuration surrounding the filament is derived from the PFSS model, while the NLFFF extrapolation provides a detailed three-dimensional structure of the filament using both HMI and VSM data. Results from both instruments show good agreement. The NLFFF extrapolation based on HMI data yields higher total and free magnetic energy compared to VSM data. Moreover, the total surface electric current density is greater with VSM data, consistent with the magnetic field strength derived from both instruments.</p></div>","PeriodicalId":777,"journal":{"name":"Solar Physics","volume":"300 5","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144100267","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Sunrise Ultraviolet Spectropolarimeter and Imager: Instrument Description","authors":"Alex Feller,&nbsp;Achim Gandorfer,&nbsp;Bianca Grauf,&nbsp;Johannes Hölken,&nbsp;Francisco A. Iglesias,&nbsp;Andreas Korpi-Lagg,&nbsp;Tino L. Riethmüller,&nbsp;Jan Staub,&nbsp;German Fernandez-Rico,&nbsp;Juan Sebastián Castellanos Durán,&nbsp;Sami K. Solanki,&nbsp;H. N. Smitha,&nbsp;Kamal Sant,&nbsp;Peter Barthol,&nbsp;Montserrat Bayon Laguna,&nbsp;Melani Bergmann,&nbsp;Jörg Bischoff,&nbsp;Jan Bochmann,&nbsp;Stefan Bruns,&nbsp;Werner Deutsch,&nbsp;Michel Eberhardt,&nbsp;Rainer Enge,&nbsp;Sam Goodyear,&nbsp;Klaus Heerlein,&nbsp;Jan Heinrichs,&nbsp;Dennis Hirche,&nbsp;Stefan Meining,&nbsp;Roland Mende,&nbsp;Sabrina Meyer,&nbsp;Maria Mühlhaus,&nbsp;Marc Ferenc Müller,&nbsp;Markus Monecke,&nbsp;Dietmar Oberdorfer,&nbsp;Ioanna Papagiannaki,&nbsp;Sandeep Ramanath,&nbsp;Michael Vergöhl,&nbsp;Dušan Vukadinović,&nbsp;Stephan Werner,&nbsp;Andreas Zerr,&nbsp;Thomas Berkefeld,&nbsp;Pietro Bernasconi,&nbsp;Yukio Katsukawa,&nbsp;Jose Carlos del Toro Iniesta,&nbsp;Alexander Bell,&nbsp;Michael Carpenter,&nbsp;Alberto Álvarez Herrero,&nbsp;Masahito Kubo,&nbsp;Valentín Martínez Pillet,&nbsp;David Orozco Suárez","doi":"10.1007/s11207-025-02471-7","DOIUrl":"10.1007/s11207-025-02471-7","url":null,"abstract":"<div><p>The third science flight of the balloon-borne solar observatory <span>Sunrise</span> carries three entirely new post-focus science instruments with spectropolarimetric capabilities, concurrently covering an extended spectral range from the near ultraviolet to the near infrared. Sampling a larger height range, from the low photosphere to the chromosphere, with the sub-arcsecond resolution provided by the 1-m <span>Sunrise</span> telescope, is key in understanding critical small-scale phenomena which energetically couple different layers of the solar atmosphere. The <span>Sunrise</span> UV Spectropolarimeter and Imager (<span>SUSI</span>) operates between 309 nm and 417 nm. A key feature of <span>SUSI</span> is its capability to record up to several hundred spectral lines simultaneously without the harmful effects of the Earth’s atmosphere. The rich <span>SUSI</span> spectra can be exploited in terms of many-line inversions. Another important innovation of the instrument is the synchronized 2D context imaging which allows to numerically correct the spectrograph scans for residual optical aberrations. In this work we describe the main design aspects of <span>SUSI</span>, the instrument characterization and testing, and finally its operation, expected performance and data products.</p></div>","PeriodicalId":777,"journal":{"name":"Solar Physics","volume":"300 5","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11207-025-02471-7.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143949634","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Spectral Irradiance Variability in Lyman-Alpha Emission During Solar Flares","authors":"Luke Majury,&nbsp;Ryan Milligan,&nbsp;Elizabeth Butler,&nbsp;Harry Greatorex,&nbsp;Maria Kazachenko","doi":"10.1007/s11207-025-02476-2","DOIUrl":"10.1007/s11207-025-02476-2","url":null,"abstract":"<div><p>The Lyman-alpha (Ly<span>(alpha )</span>; 1216 Å) line is the brightest emission line in the quiescent solar spectrum and radiates a significant fraction of the available nonthermal energy during flares. Despite its importance, there is a lack of detailed studies of Ly<span>(alpha )</span> spectral variability during flares. Recently, spectrally resolved Ly<span>(alpha )</span> flare observations from the SORCE/SOLSTICE instrument have become available. This study examines Ly<span>(alpha )</span> spectral variability and its relationship with HXR emission from nonthermal electrons, using observations of two M-class flares from SORCE/SOLSTICE and RHESSI. Imaging observations from STEREO/SECCHI EUVI and SDO/AIA provide further context. Enhancements across the Ly<span>(alpha )</span> line profile were found to closely correlate with bursts of HXR emission, suggesting a primarily nonthermal origin. Red enhancement asymmetries at the peak of each flare were attributed to chromospheric evaporation, while blue wing enhancement and blue asymmetry were linked to a bright filament-eruption seen in SDO/AIA 1600 Å images. These findings contribute to the understanding of spectral Ly<span>(alpha )</span> variability during flares and highlight the need for future studies using a higher quality and quantity of spectral Ly<span>(alpha )</span> flare observations. Such studies will further characterise the physical mechanisms driving Ly<span>(alpha )</span> flare variability.</p></div>","PeriodicalId":777,"journal":{"name":"Solar Physics","volume":"300 5","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11207-025-02476-2.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143949633","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"An Efficient Method for Magnetic Field Extrapolation Based on a Family of Analytical Three-Dimensional Magnetohydrostatic Equilibria","authors":"Lilli Nadol,&nbsp;Thomas Neukirch","doi":"10.1007/s11207-025-02469-1","DOIUrl":"10.1007/s11207-025-02469-1","url":null,"abstract":"<div><p>With current observational methods it is not possible to directly measure the magnetic field in the solar corona with sufficient accuracy. Therefore, coronal magnetic field models have to rely on extrapolation methods using photospheric magnetograms as boundary conditions. In recent years, due to the increased resolution of observations and the need to resolve non-force-free lower regions of the solar atmosphere, there have been increased efforts to use magnetohydrostatic (MHS) field models instead of force-free extrapolation methods. Although numerical methods to calculate MHS solutions can deal with non-linear problems and hence provide more accurate models, analytical three-dimensional MHS equilibria can also be used as a numerically relatively “cheap” complementary method. In this paper, we present an extrapolation method based on a family of analytical MHS equilibria that allows for a transition from a non-force-free region to a force-free region. We demonstrate how asymptotic forms of the solutions can help to increase the numerical efficiency of the method. Through both artificial boundary condition testing and a first application to observational data, we validate the method’s effectiveness and practical utility.</p></div>","PeriodicalId":777,"journal":{"name":"Solar Physics","volume":"300 5","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11207-025-02469-1.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143944256","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Wide-Field Image Restoration of G-Band and Ca ii K Images Containing Large and Complex Active Regions","authors":"Robert Kamlah,&nbsp;Meetu Verma,&nbsp;Carsten Denker,&nbsp;Ioannis Kontogiannis,&nbsp;Alexander G. M. Pietrow,&nbsp;Jürgen Rendtel,&nbsp;Emily Lößnitz,&nbsp;Arooj Faryad,&nbsp;Reiner Volkmer,&nbsp;Rolf Schlichenmaier,&nbsp;Thomas Berkefeld,&nbsp;Miguel Esteves,&nbsp;Olivier Grassin,&nbsp;Markus Roth","doi":"10.1007/s11207-025-02472-6","DOIUrl":"10.1007/s11207-025-02472-6","url":null,"abstract":"<div><p>Restoration of solar images to achieve near diffraction-limited spatial resolution is commonly implemented on large-aperture solar telescopes. However, the extent of the restored field-of-view is typically only 100^′′ or even smaller. This study reports on wide-field image restoration of G-band and Ca <span>ii</span> K images obtained with the 0.7-meter Vacuum Tower Telescope (VTT) at Observatorio del Teide, Tenerife, Spain. The Kiepenheuer Adaptive Optics System (KAOS) at the VTT provides a field-of-view with a diameter of 270^′′. Time series of datasets with 100 images were acquired with a large-format (7920 × 6004 pixels) CMOS imager at a frame rate of 30 Hz. An experimental optical setup that enabled wide-field imaging is briefly presented. Results from speckle-masking imaging and Multi-Frame Blind Deconvolution (MFBD) demonstrate the unique potential of the VTT for wide-field imaging. Power spectral analysis quantifies the instrument performance as a function of time and with distance from the lock point of the AO system. Further science capabilities are established using Local Correlation Tracking (LCT), Background-subtracted Solar Activity Maps (BaSAMs), and image quality/seeing metrics. In summary, commercial off-the-shelf camera systems can become an asset to sub-meter-class solar telescopes and open up new science opportunities at the interface between large-aperture and synoptic solar telescopes.</p></div>","PeriodicalId":777,"journal":{"name":"Solar Physics","volume":"300 5","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143929890","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Obituary: Tadashi Hirayama (1934 – 2025)","authors":"Takashi Sakurai,&nbsp;Kazunari Shibata","doi":"10.1007/s11207-025-02479-z","DOIUrl":"10.1007/s11207-025-02479-z","url":null,"abstract":"","PeriodicalId":777,"journal":{"name":"Solar Physics","volume":"300 5","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143925694","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Test and Calibration of the Solar Ultraviolet Imaging Telescope (SUIT) on Board Aditya-L1","authors":"Janmejoy Sarkar,&nbsp;V. N. Nived,&nbsp;Soumya Roy,&nbsp;Rushikesh Deogaonkar,&nbsp;Sreejith Padinhatteeri,&nbsp;A. Raja Bayanna,&nbsp;Ravi Kesharwani,&nbsp;A. N. Ramaprakash,&nbsp;Durgesh Tripathi,&nbsp;Rahul Gopalakrishnan,&nbsp;Bhushan Joshi,&nbsp;Sakya Sinha,&nbsp;Mahesh Burse,&nbsp;Manoj Varma,&nbsp;Anurag Tyagi,&nbsp;Reena Yadav,&nbsp;Chaitanya Rajarshi,&nbsp;H. N. Adithya,&nbsp;Abhijit Adoni,&nbsp;Gazi A. Ahmed,&nbsp;Dipankar Banerjee,&nbsp;Rani Bhandare,&nbsp;Bhargava Ram B.S.,&nbsp;Kalpesh Chillal,&nbsp;Pravin Chordia,&nbsp;Avyarthana Ghosh,&nbsp;Girish Gouda,&nbsp;Anand Jain,&nbsp;Melvin James,&nbsp;Evangeline Leeja Justin,&nbsp;Deepak Kathait,&nbsp;Aafaque Khan,&nbsp;Pravin Khodade,&nbsp;Abhay Kohok,&nbsp;Akshay Kulkarni,&nbsp;Ghanshyam Kumar,&nbsp;Nidhi Mehandiratta,&nbsp;Vilas Mestry,&nbsp;Deepa Modi,&nbsp;Srikanth Motamarri,&nbsp;K. Nagaraju,&nbsp;Dibyendu Nandy,&nbsp;S. Narendra,&nbsp;Sonal Navle,&nbsp;Nashiket Parate,&nbsp;Sujit Punnadi,&nbsp;A. Ravi,&nbsp;K. Sankarasubramanian,&nbsp;Ghulam Sarvar,&nbsp;Nigar Shaji,&nbsp;Sami K. Solanki,&nbsp;Rethika T,&nbsp;Koushal Vadodariya,&nbsp;D. R. Veeresha,&nbsp;R. Venkateswaran","doi":"10.1007/s11207-025-02468-2","DOIUrl":"10.1007/s11207-025-02468-2","url":null,"abstract":"<div><p>The Solar Ultraviolet Imaging Telescope (SUIT) on board the Aditya-L1 mission observes the Sun in the 200 – 400 nm wavelength range. This paper presents the results of various on-ground and on-board tests and their comparison with the specifications. Moreover, we also present the scheme for data calibration. We demonstrate that the test results are compliant with the specified numbers, except the spatial resolution. Such discrepancy will limit the photometric measurements only, at a scale of 2.2^′′ instead of 1.4^′′ as originally envisioned. The results obtained here show that SUIT observations open a new window for solar observations.</p></div>","PeriodicalId":777,"journal":{"name":"Solar Physics","volume":"300 5","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143919035","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"ASO-S Mission: Inflight Performance and First Results","authors":"W. Q. Gan,&nbsp;John Leibacher,&nbsp;Cristina H. Mandrini,&nbsp;Lidia van Driel-Gesztelyi","doi":"10.1007/s11207-025-02473-5","DOIUrl":"10.1007/s11207-025-02473-5","url":null,"abstract":"<div><p>China’s first comprehensive solar physics mission, the Advanced Space-based Solar Observatory (ASO-S), was successfully launched on 9 October 2022. The mission focuses on exploring the connections between the solar magnetic field, solar flares, and coronal mass ejections (CMEs). ASO-S carries three instruments: the Full-disk solar vector MagnetoGraph (FMG), the solar Hard X-ray Imager (HXI), and the Lyman-alpha Solar Telescope (LST). The unique combination of these payloads allows simultaneous observations of the vector magnetic field of the full Sun, high-energy imaging spectroscopy of solar flares, and formation and evolution of CMEs on the disk and in the inner corona. This topical collection, along with other publications, provides an overview of ASO-S’s achievements over the first one and a half years, including mission validation, payload calibration, data flow description, analysis software demonstration, and numerous investigations based on ASO-S observed data. We hope this collection will be valuable for researchers seeking to understand the mission or utilize the data.</p></div>","PeriodicalId":777,"journal":{"name":"Solar Physics","volume":"300 5","pages":""},"PeriodicalIF":2.7,"publicationDate":"2025-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143913842","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}