Solar ring mission: Building a panorama of the Sun and inner-heliosphere

Wang, Yuming; Bai, Xianyong; Chen, Changyong; Chen, Linjie; Cheng, Xin; Deng, Lei; Deng, Linhua; Deng, Yuanyong; Li, Feng; Gou, Tingyu; Guo, Jingnan; Guo, Yang; Hao, Xinjun; He, Jiansen; Hou, Jing; Huang, Jiangjiang; Huang, Zhaoqin; Ji, Haisheng; Jiang, Chaowei; Jiang, Jingyang; Jin, Chuangui; Li, Xiaolei; Li, Yiren; Li, Jiajia; Li, Kai; Liu, Liu; Li, Rui; Qiu, Chengbo; Shen, Chenglong; Shen, Fang; Shen, Yuandeng; Shi, X. J.; Su, Jiangtao; Su, Yang; Su, Yingna; Sun, Mingzhe; Tan, Baolin; Wang, Yamin; Xia, Lidong; Xie, J. L.; Xiong, Ming; Xu, Mengjiao; Yan, Xiaoli; Yan, Yihua; Yang, Shangbin; Yang, Shuhong; Zhang, Shenyi; Zhang, Quanhao; Zhang, Yonghe; Zhao, Jun; Zhou, Guiping; Zou, Hong

doi:10.1016/j.asr.2022.10.045

Cited by 17 publications

(4 citation statements)

References 48 publications

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“…The observational data from STEREO-B have been lost since 2014, so the next step for our study is to develop the CORAR technique for processing the coronagraph data from STEREO-A and SOHO. The CORAR technique is also suitable for future space science missions equipped with multiple coronagraphs, e.g., the Solar Ring mission, consisting of three spacecraft separated by 120°on a 1 au orbit (Wang et al 2023). Furthermore, we hope to obtain and study the properties of the reconstructed transients, including the velocity, density, temperature, magnetic field fluctuations, elemental abundance, ion charge states, and so on, by linking transients observed in coronagraphs with the in situ measurement of the near-Sun solar wind provided by PSP (Fox et al 2016) and SolO (Müller et al 2020).…”

Section: Discussionmentioning

confidence: 99%

Inferring the Solar Wind Velocity in the Outer Corona Based on Multiview Observations of Small-scale Transients by STEREO/COR2

Lyu,

Wang,

et al. 2024

ApJ

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Based on the Heliospheric Imager-1 images of the STEREO twin spacecraft, we established the CORrelation-Aided Reconstruction (CORAR) technique to locate and reconstruct the 3D structures of solar wind transients in interplanetary space. Here, we extend the CORAR method to images of COR2 on board STEREO to study the evolution of small-scale transients in the outer corona from 2010 January to May. We confirm that the transients can be located and reconstructed well by comparing the results with those of a self-similar expanding model. The speed distribution of the reconstructed transients generally shows the typical characteristics of the slow solar wind. We further study the sources of the transients on the Sun, and find that most reconstructed transients are located near the top of streamer belts or the heliospheric current sheet and can be tracked back to the boundaries of the closed-field and open-field regions along the field lines extrapolated by corona models. The formation mechanisms of these transients in the slow solar wind are also discussed.

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Section: Discussionmentioning

confidence: 99%

Inferring the Solar Wind Velocity in the Outer Corona Based on Multiview Observations of Small-scale Transients by STEREO/COR2

Lyu,

Wang,

et al. 2024

ApJ

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“…It is necessary to conduct statistical analyses of ICME events with multiple observations since it is known that individual event studies do not reveal global trends. With the launch of Solar Orbiter (Müller et al 2020), Parker Solar Probe (Fox et al 2016), the future Vigil mission (Luntama et al 2020), and the future solar ring mission (Wang et al 2020(Wang et al , 2023b, we are entering a new era of inner heliosphere exploration from multispacecraft in situ observations. The in situ and remote observations of CMEs at various radial distances provide a fantastic chance to analyze the radial evolution of CME dynamics, magnetic fields, and ICME interactions with other structures.…”

Section: Discussionmentioning

confidence: 99%

The Dynamic Evolution of Multipoint Interplanetary Coronal Mass Ejections Observed with BepiColombo, Tianwen-1, and MAVEN

Chi

Shen

Liu

et al. 2023

ApJL

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We present two multipoint interplanetary coronal mass ejections (ICMEs) detected by the Tianwen-1 and Mars Atmosphere and Volatile Evolution spacecraft at Mars and the BepiColombo (0.56 au ∼0.67 au) upstream of Mars from 2021 December 5 to 31. This is the first time that BepiColombo is used as an upstream solar wind monitor ahead of Mars and that Tianwen-1 is used to investigate the magnetic field characteristics of ICMEs at Mars. The Heliospheric Upwind Extrapolation time model was used to connect the multiple in situ observations and the coronagraph observations from STEREO/SECCHI and SOHO/LASCO. The first fast coronal mass ejection event (∼761.2 km s−1), which erupted on December 4, impacted Mars centrally and grazed BepiColombo by its western flank. The ambient slow solar wind decelerated the west flank of the ICME, implying that the ICME event was significantly distorted by the solar wind structure. The second slow ICME event (∼390.7 km s−1) underwent an acceleration from its eruption to a distance within 0.69 au and then traveled with the constant velocity of the ambient solar wind. These findings highlight the importance of background solar wind in determining the interplanetary evolution and global morphology of ICMEs up to Mars distance. Observations from multiple locations are invaluable for space weather studies at Mars and merit more exploration in the future.

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“…The Sentinels envisioned an array of in-situ spacecraft monitoring solar wind characteristics at several heliocentric distances, and solar longitudes and latitudes, together with remote sensing probes. To that end, SWIFT uniquely joins a long list of heliospheric mission concepts, including Lagrange (ESA), Magnetic Topology Reconstruction Explorer (MagneToRE; Maruca et al, 2021), Polar investigation of the Sun (Polaris; Appourchaux et al, 2009;Probst et al, 2022), SPORT (Xiong et al, 2017), Solar Ring (Wang et al, 2023), and InterMeso (Allen et al, 2022) aiming to fill the observational gaps to determine the structure and long-term variations of the inner heliosphere.…”

Section: Mission Contextmentioning

confidence: 99%

Space weather investigation Frontier (SWIFT)

Akhavan‐Tafti

Johnson

Sood

et al. 2023

Front. Astron. Space Sci.

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The Space Weather Investigation Frontier (SWIFT) mission will aim at making major discoveries on the three-dimensional structure and dynamics of heliospheric structures that drive space weather. The focus will be on Interplanetary Coronal Mass Ejections (ICMEs) that originate from massive expulsions of plasma and magnetic flux from the solar corona. They cause the largest geomagnetic storms and solar energetic particle events, threatening to endanger life and disrupt technology on Earth and in space. A big current problem, both regarding fundamental solar-terrestrial physics and space weather, is that we do not yet understand spatial characteristics and temporal evolution of ICMEs and that the existing remote-sensing and in-situ observatories are not suited for resolving multi-layered and evolutionary structures in these massive storm drivers. Here, we propose a groundbreaking mission concept study using solar sail technology that, for the first time, will make continuous, in-situ multi-point observations along the Sun-Earth line beyond the Lagrange point L1 (sub-L1). This unique position, in combination with L1 assets, will allow distinguishing between local and global processes, spatial characteristics, temporal evolution, and particle energization mechanisms related to ICMEs. In addition, measurements of the magnetic field in earthbound ICMEs and their sub-structures from the SWIFT location will double the current forecasting lead-times from L1. This concept also paves the way for missions with increasingly longer forecasting lead-times, addressing NASA and NOAA’s space weather goals, as set forth by the Decadal Survey. The objective of this communication is to inform the community of the ongoing effort, including plans to further develop the mission concept, supported by the Heliophysics Flight Opportunities Studies (HFOS) program under NASA’s Research Opportunities in Space and Earth Sciences (ROSES).

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Solar ring mission: Building a panorama of the Sun and inner-heliosphere

Cited by 17 publications

References 48 publications

Inferring the Solar Wind Velocity in the Outer Corona Based on Multiview Observations of Small-scale Transients by STEREO/COR2

Inferring the Solar Wind Velocity in the Outer Corona Based on Multiview Observations of Small-scale Transients by STEREO/COR2

The Dynamic Evolution of Multipoint Interplanetary Coronal Mass Ejections Observed with BepiColombo, Tianwen-1, and MAVEN

Space weather investigation Frontier (SWIFT)

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