Implications of Multiple Corona Bursts in Lightning Processes for Radio Frequency Interferometer Observations

被引：5

作者：

Liu, Ningyu ^{[1
,2
]}

Scholten, Olaf ^{[3
]}

Dwyer, Joseph R. ^{[1
,2
]}

Hare, Brian M. ^{[3
]}

Sterpka, Christopher F. ^{[1
,2
]}

Tilles, Julia N. ^{[4
]}

Lind, Frank D. ^{[5
]}

机构：

[1] Univ New Hampshire, Dept Phys & Astron, Durham, NH 03824 USA

[2] Univ New Hampshire, Astron & Space Sci Ctr EOS, Durham, NH 03824 USA

[3] Univ Groningen, Kapteyn Astron Inst, Groningen, Netherlands

[4] Sandia Natl Labs, Albuquerque, NM 87185 USA

[5] MIT, Haystack Observ, Westford, MA 01886 USA

来源：

GEOPHYSICAL RESEARCH LETTERS | 2022年 / 49卷 / 07期

关键词：

lightning; radio interferometer; imaging; streamers; corona bursts; VHF; STREAMERS; BREAKDOWN; LOCATION; VHF;

D O I：

10.1029/2021GL097367

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Recent observations from LOFAR indicate that multiple, spatially distributed corona bursts can occur in lightning processes with a timescale of 10 microseconds. The close proximity of the corona bursts in space and time poses a great observation challenge for short-baseline (typically <= 100 m) radio interferometers. This paper reports simulations to show the interferometry results that would be obtained with such an interferometer. In particular, spatially-separated corona bursts at fixed locations may be seen as a fast (>10(7) m/s) propagating source with large power variation if the resolution of the instrument is greater than the spatial separation of the bursts. The implications and suggestions for lightning interferometry studies are discussed in the paper.

引用

页数：9

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