Global Electrophonic Fireball Survey: a Review of Witness Reports - I

摘要: Despite more than 300 years since its first scientific description, the phenomenon of electrophonic sounds from meteors still eludes complete physical explanation. According to accepted knowledge, sound itself is created by strong electric fields on ground induced meteor. Nonetheless, there no convincing theory that can fully explain how a meteor generate such field. The extreme rareness has prevented substantial experimental work so far ; thus, consequently, it remains margins interest. This quite unfortunate these suggest existence highly complex electromagnetic coupling and charge dynamics between ionosphere. Therefore, existing theoretical relies mostly witness reports. Global Electrophonic Fireball Survey (GEFS) systematic survey reports with standardized questionnaire designed exclusively for this phenomenon. Here we present overall picture emerged after almost 100 collected GEFS. It becomes clear now lower brightness limit about magnitude -2^m, suggesting bias in catalogues toward brighter meteors. In contrast current belief low produce transient sounds, find they also sustained sounds. theories cannot accommodate results. We revive old idea be corona discharge mechanism, addition prevalent suggestion resonant vibration object ground.