Energy deposition in the coma of comet 67P probed by Rosetta

罗塞塔探测到的 67P 彗星彗发中的能量沉积

• 批准号: 2119010
• 金额: --
• 依托单位: Imperial College London
• 依托单位国家: 英国
• 项目类别: Studentship
• 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=studentship-2119010
• 关键词: Energy; deposition; coma; comet; 67P

The ESA/Rosetta mission is the first to escort a comet along its orbit. It gathered a unique and rich dataset from its arrival in summer 2014 (when comet 67P was at a distance of 3.6 AU from the Sun), through perihelion at 1.2 AU reached in August 2015, and then post-perihelion up to the end of mission on September 30, 2016 (at a distance of 3.8 AU from the Sun). Rosetta observed a plasma of primarily cometary origin from its arrival but which varied and evolved with season, cometocentric distance, outgassing rate, and heliocentric distance. The project will build upon the observations of the neutral coma and plasma environment from the Rosetta Orbiter Spectrometer for Ion and Neutral Analysis (ROSINA) and Rosetta Plasma Consortium (RPC) sensors as well as the Far Ultraviolet measurements from Alice onboard Rosetta. The aims of the project include the identification of the energy source yielding the emissions observed by Alice and the presence of cold and warm plasma populations observed by RPC sensors.

欧空局/罗塞塔使命是第一个护送彗星沿着其轨道。它从2014年夏天抵达（当时彗星67 P距离太阳3.6 Au），到2015年8月到达1.2 Au的近日点，然后经过近日点，直到2016年9月30日使命结束（距离太阳3.8 Au），收集了独特而丰富的数据集。罗塞塔号观测到了一个等离子体，它主要来自彗星，但随着季节、彗星中心距离、释气率和日心距离的变化和演变而变化。该项目将建立在罗塞塔轨道器离子和中性分析光谱仪（ROSINA）和罗塞塔等离子体联盟（RPC）传感器对中性昏迷和等离子体环境的观测以及罗塞塔上爱丽丝的远紫外测量的基础上。该项目的目标包括确定产生Alice观测到的排放的能源以及RPC传感器观测到的冷和暖等离子体群的存在。

项目成果

A collisional test-particle model of electrons at a comet

彗星上电子的碰撞测试粒子模型

• DOI: 10.1093/mnras/stac055
• 发表时间: 2022
• 期刊: Monthly Notices of the Royal Astronomical Society
• 影响因子: 4.8
• 作者: Stephenson P

Far-ultraviolet aurora identified at comet 67P/Churyumov-Gerasimenko

67P/Churyumov-Gerasimenko 彗星上发现远紫外线极光

• DOI: 10.1038/s41550-020-1171-7
• 发表时间: 2020
• 期刊: Nature Astronomy
• 影响因子: 14.1
• 作者: Galand M

Multi-instrument analysis of far-ultraviolet aurora in the southern hemisphere of comet 67P/Churyumov-Gerasimenko

67P/Churyumov-Gerasimenko 彗星南半球远紫外极光多仪器分析

• DOI: 10.1051/0004-6361/202039155
• 发表时间: 2021
• 期刊: Astronomy & Astrophysics
• 影响因子: 6.5
• 作者: Stephenson P