Results 71 to 80 of about 16,167 (173)

The H.E.S.S. II GRB Program

, 2015
Gamma-ray bursts (GRBs) are some of the most energetic and exotic events in the Universe, however their behaviour at the highest energies (>10 GeV) is largely unknown. Although the Fermi-LAT space telescope has detected several GRBs in this energy range,
Balzer, A., Bissaldi, E., Collaboration, f., Füssling, M., Hoischen, C., Holler, M., Mitchell, A., O'Brien, P., Parsons, R., Pühlhofer, G., Rowell, G., Tam, P., Wagner, S.   +12 more
core   +3 more sources

Von geordneten Mengen bis zur Uranmaschine: Zu den Wechselbeziehungen zwischen Mathematik und Physik an der Universität Leipzig in der Zeit von 1905 bis 1945 [PDF]

, 2017
Es gibt wohl kaum Wissenschaftsgebiete, in denen die wechselseitige Beeinflussung stärker ist als zwischen Mathematik und Physik. Eine wichtige Frage ist dabei die nach der konkreten Ausgestaltung dieser Wechselbeziehungen, etwa an einer Universität ...
Schlote, Karl-Heinz
core   +1 more source

Two 100 TeV Neutrinos Coincident with the Seyfert Galaxy NGC 7469

The Astrophysical Journal
In 2013, the IceCube collaboration announced the detection of a diffuse high-energy astrophysical neutrino flux. The origin of this flux is still largely unknown. The most significant individual source is the close-by Seyfert galaxy NGC 1068 at the 4.2 σ
Giacomo Sommani, Anna Franckowiak, Massimiliano Lincetto, Ralf-Jürgen Dettmar   +3 more
doaj   +1 more source

Observation of the universal magnetoelectric effect in a 3D topological insulator

Nature Communications, 2017
The electrodynamics of topological insulators has been predicted to show a new magnetoelectric term, but this hasn’t been observed. Here, Dziomet al.
V. Dziom, A. Shuvaev, A. Pimenov, G. V. Astakhov, C. Ames, K. Bendias, J. Böttcher, G. Tkachov, E. M. Hankiewicz, C. Brüne, H. Buhmann, L. W. Molenkamp   +11 more
doaj   +1 more source

Beitrag zur Geschichte der Naturwissenschaftlichen Forschung im Raum Osnabrück [PDF]

, 2012
Angeregt durch die sehr vielfältige Landschaft um Osnabrück haben Heimatkundler und Naturwissenschaftler in der ersten Hälfte des 19. Jahrhunderts begonnen, diese Region zu erforschen.
Höttler-Meier, Angelika, Niemann, Johannes   +1 more
core  

Sub-GeV dark matter and MeV gamma-ray detection with COSI

Journal of High Energy Physics
Sub-GeV dark matter (DM) has been attracting more attention due to the negative results searching for traditional weakly interacting massive particles (WIMPs).
Yu Watanabe, Shigeki Matsumoto, Christopher M Karwin, Tom Melia, Michela Negro, Thomas Siegert, Yuki Watanabe, Hiroki Yoneda, Tadayuki Takahashi   +8 more
doaj   +1 more source

Guest Editor’s Notes on the “Atoms” Special Issue on “Perspectives of Atomic Physics with Trapped Highly Charged Ions”

Atoms, 2016
The study of highly charged ions (HCI) was pursued first at Uppsala (Sweden), by Edlén and Tyrén in the 1930s. Their work led to the recognition that the solar corona is populated by such ions, an insight which forced massive paradigm changes in solar ...
Elmar Träbert
doaj   +1 more source

Energy Cascade and Damping in Fast-mode Compressible Turbulence

The Astrophysical Journal Letters
Compressible turbulence governs energy transfer across scales in space and astrophysical systems. Capturing both the turbulence cascade and damping is therefore crucial for models of energy conversion, plasma heating, and particle transport in diverse ...
Chuanpeng Hou, Huirong Yan, Siqi Zhao, Parth Pavaskar   +3 more
doaj   +1 more source

Recoil corrections in antikaon-deuteron scattering

EPJ Web of Conferences, 2016
Using the non-relativistic effective field theory approach for K−d scattering, it is demonstrated that a systematic perturbative expansion of the recoil corrections in the parameter ξ = MK/mN is possible in spite of the fact that K−d scattering at low ...
Mai Maxim, Baru Vadim, Epelbaum Evgeny, Rusetsky Akaki   +3 more
doaj   +1 more source

Speed limits of the laser-induced phase transition in FeRh

APL Materials
We use ultrafast x-ray diffraction and the polar time-resolved magneto-optical Kerr effect to study the laser-induced metamagnetic phase transition in two FeRh films with thicknesses below and above the optical penetration depth.
M. Mattern, J. Jarecki, J. A. Arregi, V. Uhlíř, M. Rössle, M. Bargheer   +5 more
doaj   +1 more source