 |
| Titel |
Observations of energitic radiation bursts from thunder activities |
| VerfasserIn |
H. Tsuchiya, T. Enoto, T. Torii, T. Yuasa, S. Yamada, T. Kitacuhi, K. Nakazawa, H. Kato, M. Okano, K. Makishima |
| Konferenz |
EGU General Assembly 2009
|
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 11 (2009) |
| Datensatznummer |
250020560
|
|
|
|
|
|
| Zusammenfassung |
| Energetic radiation bursts have been observed during strong
thunderstorms by ground-based detectors as well as
high-mountain ones. Those radiation bursts are thought to
result from runaway electrons originating from electrons
accelerated by strong electric field in lightning
discharges and thunderclouds, and hence provide
a valuable key to understand particle acceleration in
thunder activity. Interestingly, they can be categorized
into two bursts by their duration. One consists of short
bursts lasting for milli-seconds or less. The other
comprises long bursts having duration of a few seconds.
In order to better understand both short and long bursts,
we have conducted experiments at coastal area of the Japan
Sea and a 2770-m altitude observatory. In this talk, we will
report on those experiments, showing the two experiments has
successfully observed both short and long bursts.
Especially, we will focus on high-energy radiations
extending over MeV energies, and then discuss a plausible
model to explain how those high-energy radiations are
produced in thunder activity. |
|
|
|
|
|
|