We explore the prospects for using future supernova observations to probe the dark energy. We focus on quintessence, an evolving scalar field that has been suggested as a candidate for the dark energy. After simulating the observations that would be expected from the proposed SuperNova / Acceleration Probe satellite (SNAP), we investigate two methods for extracting information about quintessenc...

Owing to their anoxic environment, peatlands play an important role in the preservation of records documenting past atmospheric depositions. To determine records, data on peat stratigraphy and bog development are needed. Ground penetrating radar (GPR) was used thickness morphology Šijec Pokljuka plateau Slovenia, which will serve as a basis for further geochemical studies. Information below pea...

We investigate the accuracy and resolution of the variogram analysis method (Maus, 1999) on syn thetic and real data. Syn thetic magnetic ight line data are generated forbasemen t models of idealized geological setups. Comparing variogram depths of the data with true model depths shows that variogram depths are accurate and un biased as long as the data analysis window is larger than 10 times t...

www.americanscientist.org W constitutes a dangerous equation? There are two obvious interpretations: Some equations are dangerous if you know them, and others are dangerous if you do not. The first category may pose danger because the secrets within its bounds open doors behind which lies terrible peril. The obvious winner in this is Einstein’s iconic equation e = mc2, for it provides a measure...

Normal-mode coupling is a technique applied to probe the solar interior using surface observations of oscillations. The technique, which straightforward implement, makes more use seismic information in wavefield than other comparable local imaging techniques and therefore has potential significantly improve current capabilities. Here, we examine supergranulation power spectra mode-coupling anal...