Authors: K.A. Nicoll1,2, R.G. Harrison1, V. Barta3, J.Bor3, R. Brugge1, A. Chillingarian4, J. Chum5, A. K.Georgoulias6, A. Guha7, K. Kourtidis6 , M. Kubicki8, E. Mareev9, J. Matthews10, H. Mkrtchyan4, A. Odzimek8, J.-P. Raulin11, D. Robert12, H. G. Silva13, J. Tacza11, Y. Yair14, R. Yaniv15,16
Abstract:The Global atmospheric Electric Circuit (GEC) is a fundamental coupling network of the climate system connecting electrically disturbed weather regions with fair weather regions across the planet. The GEC sustains the fair weather electric field (or potential gradient, PG) which is present globally and can be measured routinely at the surface using durable instrumentation such as modern electric field mills, which are now widely deployed internationally. In contrast to lightning or magnetic fields, fair weather PG cannot be measured remotely...
Authors: Yuval Reuvenia,a,b,c,, Yoav Yairc, Colin Priced, Gideon Steinitze
Abstract: We report coincidences of ground-level gamma-ray enhancements with precipitation events and strong electric fields typical of thunderstorms, measured at the Emilio Segre Cosmic Ray observatory located on the western slopes of Mt. Hermon in northern Israel. The observatory hosts 2 ×2″ Nal(TI) gamma ray scintillation detectors alongside a vertical atmospheric electric field (Ez) mill and conduction current (Jz) plates...
Authors: Rutjes, Casper
Abstract: This work was funded by the Foundation for Fundamental Research on Matter
(FOM)s with FOM-project number 12PR3041. The research was conducted at
Centrum Wiskunde & Informatica (CWI). CWI is the national research institute
for mathematics and computer science in the Netherlands. CWI is part of NWOI, the Institutes Organisation of NWO...
Authors: S. Cecchini1 and M. Spurio1,2
Abstract: We present a review of atmospheric muon flux and
energy spectrum measurements over almost six decades of
muon momentum. Sea level and underground/water/ice experiments are considered. Possible sources of systematic errors in the measurements are examined. The characteristics
of underground/water muons (muons in bundle, lateral distribution, energy spectrum) are discussed. The connection between the atmospheric muon and neutrino measurements are
Authors: E. V. Bugaev, 1 A. Misaki, 2 V. A. Naumov, 3,4 T. S. Sinegovskaya, 3 S. I. Sinegovsky, 3 and
Abstract:The vertical sea-level muon spectrum at energies above 1 GeV and the muon intensities at depths up to 18 km w.e. in
different rocks and in water are calculated. The results are particularly collated with a great body of the ground-level,
underground, and underwater muon data. In the hadron-cascade calculations, we take into account the logarithmic
growth with energy of inelastic cross sections and pion, kaon, and nucleon generation in pion-nucleus collisions.
For evaluating the prompt muon contribution to the muon flux, we apply the two phenomenological approaches to
the charm production problem: the recombination quark-parton model and the quark-gluon string model...
Authors:Kevin Jourde1, DominiqueGibert2,3, Jacques Marteau4, Jean de Bremond d’Ars2, SergeGardien4, ClaudeGirerd4 & Jean-Christophe Ianigro4
Abstract: Usage of secondary cosmic muons to image the geological structures density distribution signifcantly
developed during the past ten years. Recent applications demonstrate the method interest to
monitor magma ascent and volcanic gas movements inside volcanoes. Muon radiography could be
used to monitor density variations in aquifers and the critical zone in the near surface. However, the
time resolution achievable by muon radiography monitoring remains poorly studied. It is biased by
fuctuation sources exterior to the target, and statistically afected by the limited number of particles
detected during the experiment...
Authors: Chung Yau Elton Ho
Abstract: We measured the zenith angle θ distribution of cosmic ray muons at ground level using NaI detectors
and plastic scintillators, and our data is consistent with the cos2
θ distribution obtained from theory and
other experiments. We also discussed the pros and cons of using NaI detectors and plastic scintillators.
Authors: Adrian L. Melott1, Fraciole Marinho2, and Laura Paulucci3
Abstract: Considerable data and analisys support the detection of one or more supernovae (SNe) at a distance of about 50pc, ͠ 2.6 million years ago. This is possibly related to the extinction event around that time and is a member of a series of explosions that formed the Local Bubble in the interstellar medium. We build on previous work, and propagate the muon flux from SN-initiated cosmic rays from the surface to the debths of the ocean. We find that the radiation dose from the muons will exceed the total present surface dose from all sources at dephts up to 1 km and will persist for at least the lifetime of marine megafauna...
Authors: Yuuki Wada iD1,2,3 , Teruaki Enoto iD 2,4 ,Yoshitaka Nakamura5 , Yoshihiro Furuta6 , Takayuki Yuasa iD7 , Kazuhiro NakazawaiD8 , Takeshi Morimoyo iD9 , Mitsuteru Sato10 , Takahiro Matsumoto, Daisuke Yonetoku 11 , Tatsuya Sawano11 , Hideo Sakai12 , Masashi Kamogawa 13, Tomoo Ushio14, Kazuo Makishima1,2,15 and Harufumi Tsuchiya16
Abstract: Two types of high-energy events have been detected from thunderstorms. One is ''terrestrial gamma-ray flashes'' (TGFs), sub-millisecond emissions coinciding with lightning discharges. The other is minute-lasting "gamma-ray glows". Although both phenomena are thought to originate from relativistic runaway electron avalanches in strong electric fields, the connection between them is not well understood...
10. On the High-Energy Spectral Component and Fine Time Structure of Terrestrial Gamma Ray Flashes