Downward terrestrial gamma-ray flash associated with collision of lightning leaders

Wada, Yuuki; Morimoto, Takeshi; Wu, Ting; Wang, Daohong; Kikuchi, Hiroshi; Nakamura, Yoshitaka; Yoshikawa, Eiichi; Ushio, Tomoo; Tsuchiya, Harufumi

doi:https://doi.org/10.1126/sciadv.ads6906

Downward terrestrial gamma-ray flash associated with collision of lightning leaders

Wada, Yuuki; Morimoto, Takeshi; Wu, Ting et al.

Science Advances, 2025, 11(21), eads6906

Number of Access:4（2025-11-07 07:55 Counts）

Identifier to cite or link to this item: https://hdl.handle.net/11094/102923

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Title	Downward terrestrial gamma-ray flash associated with collision of lightning leaders
Creator	NRID 1000040879144 1000040879144 ORCID 0000-0001-8953-3345 0000-0001-8953-3345 researchmap permalink yuuki_wada yuuki_wada Scopus Author ID 57188929986 57188929986 CreatorName Wada, Yuuki
	NRID 1000060403169 1000060403169 CreatorName Morimoto, Takeshi
	NRID 1000050789774 1000050789774 CreatorName Wu, Ting
	NRID 1000020273120 1000020273120 CreatorName Wang, Daohong
	NRID 1000040783105 1000040783105 CreatorName Kikuchi, Hiroshi
	NRID 1000070609817 1000070609817 CreatorName Nakamura, Yoshitaka
	NRID 1000070619395 1000070619395 CreatorName Yoshikawa, Eiichi
	NRID 1000050332961 1000050332961 ORCID 0000-0001-8705-7672 0000-0001-8705-7672 researchmap permalink read0077819 read0077819 Scopus Author ID 7005256762 7005256762 CreatorName Ushio, Tomoo
	NRID 1000070415230 1000070415230 CreatorName Tsuchiya, Harufumi
Description	Wada Y., Morimoto T., Wu T., et al. Downward terrestrial gamma-ray flash associated with collision of lightning leaders. Science Advances 11(21), eads6906 (2025); https://doi.org/10.1126/sciadv.ads6906.
Abstract	Lightning discharges can produce transient gamma-ray emissions called terrestrial gamma-ray flashes (TGFs), which originates from electrons accelerated to relativistic energies in strong electric fields. However, it is not yet understood how lightning produces an enormous number of relativistic electrons in dense atmospheres. We present that, thanks to a ground-based observation with optical, radio frequency and high-energy measurements focused on television transmission towers in Kanazawa, Japan, a TGF and a cloud-to-ground discharge of −56 kA occurred when a downward negative leader was colliding with an upward positive leader from the tower. Because the cloud-to-ground current followed the TGF by 30 μs, the TGF started when two leaders approached each other. Our results indicate that an immense number of electrons were produced and accelerated to relativistic energies in a strong and compact electric-field region between the two leaders.
Publisher	American Association for the Advancement of Science
Source Title	Science Advances
Volume (Issue)	11(21)
Page	eads6906
Date of Issued	2025-05-21
Language	English
Handle URL	https://hdl.handle.net/11094/102923
eISSN	23752548
Relation.isIdenticalTo	DOI (Publisher Version) https://doi.org/10.1126/sciadv.ads6906
Access Rights	open access
CopyRight	This article is licensed under a Creative Commons Attribution 4.0 International License.
oaire:version	Version of Record
Category	学術雑誌論文 Journal Article

Resource Type	journal article
Local Type	Journal Article
DCMI Type	Text
DCTERMS.bibliographicCitation	Science Advances. 2025, 11(21), p. eads6906
DC.title	Downward terrestrial gamma-ray flash associated with collision of lightning leaders
DC.creator	Wada, Yuuki
	Morimoto, Takeshi
	Wu, Ting
	Wang, Daohong
	Kikuchi, Hiroshi
	Nakamura, Yoshitaka
	Yoshikawa, Eiichi
	Ushio, Tomoo
	Tsuchiya, Harufumi
DC.publisher	American Association for the Advancement of Science
DC.language' scheme='DCTERMS.RFC1766	English
DC.type' scheme='DCTERMS.DCMIType	Text
DCTERMS.issued' scheme='DCTERMS.W3CDTF	2025-05-21
DC.identifier	https://doi.org/10.1126/sciadv.ads6906
DC.description	Wada Y., Morimoto T., Wu T., et al. Downward terrestrial gamma-ray flash associated with collision of lightning leaders. Science Advances 11(21), eads6906 (2025); https://doi.org/10.1126/sciadv.ads6906.
DCTERMS.abstract	Lightning discharges can produce transient gamma-ray emissions called terrestrial gamma-ray flashes (TGFs), which originates from electrons accelerated to relativistic energies in strong electric fields. However, it is not yet understood how lightning produces an enormous number of relativistic electrons in dense atmospheres. We present that, thanks to a ground-based observation with optical, radio frequency and high-energy measurements focused on television transmission towers in Kanazawa, Japan, a TGF and a cloud-to-ground discharge of −56 kA occurred when a downward negative leader was colliding with an upward positive leader from the tower. Because the cloud-to-ground current followed the TGF by 30 μs, the TGF started when two leaders approached each other. Our results indicate that an immense number of electrons were produced and accelerated to relativistic energies in a strong and compact electric-field region between the two leaders.
DC.rights	This article is licensed under a Creative Commons Attribution 4.0 International License.
DC.format	102923
citation_title	Downward terrestrial gamma-ray flash associated with collision of lightning leaders
citation_author	Wada, Yuuki
	Morimoto, Takeshi
	Wu, Ting
	Wang, Daohong
	Kikuchi, Hiroshi
	Nakamura, Yoshitaka
	Yoshikawa, Eiichi
	Ushio, Tomoo
	Tsuchiya, Harufumi
citation_publisher	American Association for the Advancement of Science
citation_language	English
citation_date	2025-05-21
citation_journal_title	Science Advances
citation_volume	11
citation_issue	21
citation_firstpage	eads6906
citation_doi	https://doi.org/10.1126/sciadv.ads6906
citation_public_url	https://hdl.handle.net/11094/102923

Downward terrestrial gamma-ray flash associated with collision of lightning leaders

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