Gamma ray burst emission mechanisms — are theories that explain how the energy from a gamma ray burst progenitor (regardless of the actual nature of the progenitor) is turned into radiation. These mechanisms are a major topic of research as of 2007. Neither the light curves nor the… … Wikipedia
Neutral current — Weak neutral current interactions are one of the ways in which subatomic particles can interact by means of the weak force. These interactions are mediated by the Z boson. The discovery of weak neutral currents was a significant step toward the… … Wikipedia
Neutral particle oscillation — In particle physics, neutral particle oscillation is the transmutation of a neutral particle with nonzero internal quantum numbers into its antiparticle. These oscillations and the associated mixing of particles gives insight into the realization … Wikipedia
Gamma-Hydroxybutyric acid — γ Hydroxybutyric acid Systematic (IUPAC) name 4 Hydroxybutanoic acid … Wikipedia
gamma ray — Physics. 1. a photon of penetrating electromagnetic radiation (gamma radiation) emitted from an atomic nucleus. 2. a photon emitted by an electron as a result of internal conversion. 3. electromagnetic radiation with wavelengths shorter than… … Universalium
Neutral particle — In physics, a neutral particle is a particle with no electric charge. This is not to be confused with a real neutral particle, a neutral particle that is also identical to its own antiparticle. Stable or long lived neutral particles Long lived… … Wikipedia
Vega Neutral — A method of managing risk in options trading by establishing a hedge against the implied volatility of the underlying asset. A vega neutral option position will be not be sensitive to volatility fluctuations. These strategies are used to hedge… … Investment dictionary
Unified neutral theory of biodiversity — The unified neutral theory of biodiversity and biogeography (here Unified Theory or UNTB ) is a theory and the title of a monograph [http://www.pupress.princeton.edu/titles/7105.html] by ecologist Stephen Hubbell. The theory aims to explain the… … Wikipedia
Delta neutral — In finance, delta neutral describes a portfolio of related financial securities, in which the portfolio value remains unchanged due to small changes in the value of the underlying security. Such a portfolio typically contains options and their… … Wikipedia
Soft gamma repeater — A soft gamma repeater (SGR) is an astronomical object which emits large bursts of gamma rays and X rays at irregular intervals. It is conjectured that they are a type of magnetar or, alternatively, neutron stars with fossil disks around them.On… … Wikipedia
