AOP Solar and Planetary Studies: Consolidated Grant 2018 - 2021

AOP 太阳和行星研究：综合拨款 2018 - 2021

• 批准号: ST/R000573/1
• 负责人: Apostolos Christou
• 金额: $ 35.62万
• 依托单位: Armagh Observatory
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2018
• 资助国家: 英国
• 起止时间: 2018 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=ST%2FR000573%2F1
• 关键词: AOP; Solar; Planetary; Studies; Consolidated

This research combines studies of our Sun and Solar System.The most ubiquitous jets in the solar chromosphere are spicules which have the potential to play a major role in the mass and energy balance of the corona and solar wind. We currently do not understand the mechanism(s) responsible for the formation and heating of these features, the role of the magnetic field in their time evolution or their full impact on the chromospheric mass and energy balance. None of the many theoretical models available can simultaneously explain the ubiquity, speeds, heating and dynamical evolution of spicules. This proposal seeks PDRA funding to use high-resolution observations from the Swedish Solar Telescope and the Daniel K. Inouye Solar Telescope. To properly constrain models and settle these outstanding issues, we need to know the magnetic field structure, flows and thermodynamic conditions in and around spicules. We wish to build on our detection of high-frequency waves in chromospheric spicular features and to explore more deeply the link between intensity and horizontal velocity oscillations which could be due to coupling of compressive and non-compressive waves and the interaction of the flux tube with its neighbours.In planetary science we seek to understand the origin of our planetary system, the evolution of the small bodies - comets and asteroids - within it and how these are related to the emergence of life on our planet. The new techniques we will develop (PDRA 1) to interpret spectra of polarised sunlight scattered off solid surfaces and from atmospheres will help us understand better the composition of solar system bodies, including primitive objects rich in water and organics, and how these evolve over time. We will study asteroids near the orbit of the Earth (PDRA 2), seeking clues to the origin and early evolution of our planet and how it acquired the ingredients necessary for life to begin. Not only are there compelling scientific reasons to study such objects and their interrelationships with each other, but the accumulated wealth of new information also strengthens the UK's position as a partner in the global effort to explore our solar system.

这项研究结合了对太阳和太阳系的研究。太阳色球层中最普遍的喷流是针状体，它们有可能在日冕和太阳风的质量和能量平衡中发挥重要作用。我们目前不了解这些特征的形成和加热机制、磁场在其时间演化中的作用或它们对色球质量和能量平衡的全面影响。许多可用的理论模型都无法同时解释针状体的普遍性、速度、加热和动力学演化。该提案寻求 PDRA 资助，以使用瑞典太阳望远镜和丹尼尔·井上太阳望远镜的高分辨率观测结果。为了正确约束模型并解决这些突出问题，我们需要了解骨针内部和周围的磁场结构、流动和热力学条件。我们希望以对色球针状特征中的高频波的检测为基础，更深入地探索强度和水平速度振荡之间的联系，这可能是由于压缩波和非压缩波的耦合以及通量管与其邻居的相互作用造成的。在行星科学中，我们试图了解我们的行星系统的起源，小天体 - 彗星和小行星的演化 - 其中以及它们与我们星球上生命的出现有何关系。我们将开发的新技术（PDRA 1）用于解释从固体表面和大气中散射的偏振阳光的光谱，这将帮助我们更好地了解太阳系天体的组成，包括富含水和有机物的原始物体，以及它们如何随着时间的推移而演变。我们将研究地球轨道附近的小行星（PDRA 2），寻找我们星球的起源和早期演化的线索，以及它如何获得生命开始所需的成分。研究这些天体及其相互关系不仅有令人信服的科学理由，而且新信息的积累也加强了英国作为全球探索太阳系努力合作伙伴的地位。

项目成果

Light curves and spin rates of Earth co-orbital asteroids

地球共轨小行星的光变曲线和自转速率

• DOI: 10.5194/epsc2020-324
• 发表时间: 2020
• 作者: Borisov G

(121514) 1999 UJ 7 : A primitive, slow-rotating Martian Trojan

(121514) 1999 UJ 7：一种原始的、缓慢旋转的火星特洛伊木马

• DOI: 10.1051/0004-6361/201732466
• 发表时间: 2018
• 期刊: Astronomy & Astrophysics
• 影响因子: 6.5
• 作者: Borisov G

Physical and dynamical properties of selected Earth co-orbital asteroids

选定的地球共轨小行星的物理和动力学特性

• DOI: 10.1016/j.pss.2022.105619
• 发表时间: 2023
• 期刊: Planetary and Space Science
• 影响因子: 2.4
• 作者: Borisov G

Population control of Mars Trojans by the Yarkovsky & YORP effects

• DOI: 10.1016/j.icarus.2019.07.004
• 发表时间: 2017-10
• 期刊: Icarus
• 影响因子: 3.2
• 作者: A. Christou;G. Borisov;A. Dell’Oro;Seth Andrew Jacobson;A. Cellino;E. Unda-Sanzana

Composition and origin of L5 Trojan asteroids of Mars: Insights from spectroscopy

火星 L5 特洛伊小行星的组成和起源：光谱学的见解

• DOI: 10.1016/j.icarus.2020.113994
• 发表时间: 2021
• 期刊: Icarus
• 影响因子: 3.2
• 作者: Christou A