Gadanki MST雷达探测的非镜面流星轨迹回波特征

IF 1.6 4区物理与天体物理 Q3 ASTRONOMY & ASTROPHYSICS

Journal of Astrophysics and Astronomy Pub Date : 2025-09-08 DOI:10.1007/s12036-025-10093-5

K. Chenna Reddy

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引用次数: 0

摘要

非镜面流星尾迹回波是等离子体不稳定性引起的雷达反射，这是由场向不规则性（FAI）引起的。本文报道了53 MHz Gadanki (\(13.5^\circ \) N, \(79.2^\circ \) E) MST雷达频繁探测到的非镜面尾迹回波特征。这些回声在大小和性质上具有不同的特征，在几个距离桶上具有非镜面反射，持续时间为几秒钟。我们给出了Gadanki MST雷达探测到的几个典型的回波例子。对这些例子进行了具体的分析和讨论，以了解它们的演化机制。根据目前对流星轨迹理论的理解，我们还讨论了导致这种回声演变的最可能因素。

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Characteristics of non-specular meteor trail echoes detected with Gadanki MST radar

Non-specular meteor trail echoes are radar reflections from plasma instabilities, which are caused by field-aligned irregularities (FAI). Here, we reported on characteristics of non-specular trail echoes frequently detected with 53 MHz Gadanki (\(13.5^\circ \)N, \(79.2^\circ \)E) MST radar. These echoes are characteristically different in size and nature, having non-specular reflections over several range-bins with several seconds of duration. We presented few representative examples of such echoes detected with Gadanki MST radar. These examples were analysed and discussed on case by case to understand their evolutionary mechanism. Based on the current understanding of meteor trail theories, we also discussed the most possible factors responsible for the evolution of such echoes.

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来源期刊

Journal of Astrophysics and Astronomy 地学天文-天文与天体物理

CiteScore

1.80

自引率

9.10%

发文量

审稿时长

>12 weeks

期刊介绍： The journal publishes original research papers on all aspects of astrophysics and astronomy, including instrumentation, laboratory astrophysics, and cosmology. Critical reviews of topical fields are also published. Articles submitted as letters will be considered.