Extremal black brane solutions in five-dimensional gauged supergravity

We study stationary black brane solutions in the context of N = 2, U(1) gauged supergravity in five dimensions. Using the formalism of first-order flow equations, we construct examples of extremal black brane solutions that include Nernst branes, i.e. extremal black brane solutions with vanishing entropy density, as well as black branes with cylindrical horizon topology, whose entropy density can be computed from a Cardy formula of the dual CFT.Comment: 37 pages, 5 figures, v2: Added references and derivation of the first-order flow equations from a superpotential, version which appeared in JHE

Quantum corrections to extremal black brane solutions

We discuss quantum corrections to extremal black brane solutions in N=2 U(1) gauged supergravity in four dimensions. We consider modifications due to a certain class of higher-derivative terms as well as perturbative corrections to the prepotential. We use the entropy function formalism to assess the impact of these corrections on singular brane solutions and we give a few examples. We then use first-order flow equations to construct solutions that interpolate between quantum corrected fixed points of the associated potentials.Comment: 30 pages, 10 figures; v2: references added, as well as a discussion about how to obtain the attractor equations by extremizing an effective potential, coincides with published versio

New sensors benchmark report on WorldView-3

Imagery collected by recently launched WorldView-3 satellite can be potentially used in The Common Agricultural Policy (CAP) image acquisition Campaign. The qualification and certificate is conducted by performing benchmarking tests namely, it has to be checked whether planimetric accuracy of produced orthoimagery does not exceed certain values regulated by JRC. Therefore, benchmarking tests were carried out on two WorldView-3 imagery acquired in October and November 2014. This report describes in detail how the tests were performed i.e. auxiliary data used, methodology and workflow as well as outcome from the Internal Quality Control. However, to make the tests objective, the orthoimagery was handed to JRC for External Quality Control which is a base for certification of the sensor. Such external QC has been performed by the JRC and included in Chapter 7.JRC.H.6-Digital Earth and Reference Dat

Nernst branes in gauged supergravity

We study static black brane solutions in the context of N = 2 U(1) gauged supergravity in four dimensions. Using the formalism of first-order flow equations, we construct novel extremal black brane solutions including examples of Nernst branes, i.e. extremal black brane solutions with vanishing entropy density. We also discuss a class of non-extremal generalizations which is captured by the first-order formalism.Comment: 44 pages, 3 figures, v2: added appendix B and references, minor typographic changes, v3: added some clarifying remarks, version published in JHE