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在金星轨道飞行器尘埃实验的光线下,近地球轨道上的DEX
Jayesh Pabari1, Srirag Nambiar2, Rashmi Singh2
1Physical Research Laboratory, Ahmedabad, India. jayesh@prl.res.in.
Scientific reports
|November 1, 2025
概括
尘埃实验 (DEX) 在近地轨道上成功检测到行星间尘埃颗粒 (IDP). 这项实验展示了一种用于测量IDP流量的新方法,这对于了解我们太阳系的尘埃环境至关重要.
科学领域:
- 太空科学 太空科学
- 行星科学 行星科学
- 天体物理学 天体物理学
背景情况:
- 星际尘埃颗粒 (IDP) 具有重要的研究兴趣,过去的任务提供了彗星和近地尘埃的数据.
- 在火星和金星等行星周围的IDP现场测量仍然是必要的,这促使开发新的检测技术.
研究的目的:
- 报告尘埃实验 (DEX) 的开发,部署和结果.
- 为了证明在近地轨道上的尘埃探测器的成功运行.
- 为在近地环境中提供行星间尘埃粒子流量的新测量.
主要方法:
- 尘埃实验 (DEX) 是拟议的金星和火星尘埃探测器 (VODEX/MODEX) 的复制品,在~350公里高度的近地轨道上飞行.
- 作为PSLV C-58 (XPoSat) 任务的一部分,DEX于2024年1月1日至2月9日运行.
- 使用操作式尘埃探测器记录了IDP的时间解析流量测量.
主要成果:
- DEX仪器在太空中成功运行,证实了近地轨道上IDP的存在.
- 测量时分辨率的IDP流量在每平方米每秒大约从10^-3到10^-2颗粒子之间.
- 在观察期间的整体IDP流量被确定为每平方米每秒6.46 × 10^-3 [2.95 × 10^-3,9.97 × 10^-3]颗粒.
结论:
- DEX实验成功验证了在太空中的尘埃探测器的性能.
- 该研究提供了近地环境中IDP流量的直接测量.
- 结果表明,未来的任务可能会收集有关进入地球附近的IDP的新数据.
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