Publications associées à Trou noir supermassif

On pointwise decay of linear waves on a Schwarzschild black hole background

We prove sharp pointwise

t^{-3}

decay for scalar linear perturbations of a Schwarzschild black hole without symmetry assumptions on the data. We also consider electromagnetic and gravitational perturbations for which we obtain decay rates

t^{-4}

, and $ ...

Springer Verlag2012

Efficient Interior Point Methods for Multistage Problems Arising in Receding Horizon Control

Colin Neil Jones, Melanie Nicole Zeilinger

Receding horizon control requires the solution of an optimization problem at every sampling instant. We present efficient interior point methods tailored to convex multistage problems, a problem class which most relevant MPC problems with linear dynamics c ...

2012

Efficient Interior Point Methods for Multistage Problems Arising in Receding Horizon Control

Colin Neil Jones, Melanie Nicole Zeilinger

Receding horizon control requires the solution of an optimization problem at every sampling instant. We present efficient interior point methods tailored to convex multistage problems, a problem class which most relevant MPC problems with linear dynamics c ...

2012

Deflector-jets affected by pre-aerated approach flow

Michael Pfister

Jets generated at chute ends move a potential scour zone away from the dam, and dissipate flow energy to reduce the scour. Usually, so-called flip buckets or ski jumps are provided to generate jets, yet they are rarely issued by deflectors. The application ...

2012

Hole and notch sensitivity of aluminium replicated foam

Andreas Mortensen, Etienne Combaz, Andreas Rossoll

The flow and failure behaviour of replicated pure aluminium foams in the presence of holes and notches is explored, varying the pore size and the notch depth or hole radius. Flat dog-bone tensile specimens containing a cylindrical hole, and cylindrical V-n ...

Elsevier2011

Activation Energies for the Rate-Limiting Step in Water Photooxidation by Nanostructured alpha-Fe2O3 and TiO2

Michael Graetzel, Kevin Sivula

Competition between charge recombination and the forward reactions required for water splitting limits the efficiency of metal-oxide photocatalysts. A key requirement for the photochemical oxidation of water on both nanostructured alpha-Fe2O3 and TiO2 is t ...

2011

Ordered systems of site-controlled pyramidal quantum dots incorporated in photonic crystal cavities

Elyahou Kapon, Alok Rudra, Benjamin Dwir, Pascal Gallo, Alessandro Surrente, Marco Felici

The coupling of a prescribed number of site-controlled pyramidal quantum dots (QDs) with photonic crystal (PhC) cavities was studied by polarization and power-dependent photoluminescence measurements. The energy of the cavity mode could be readily tuned, m ...

Institute of Physics2011

A proof of Price's Law on Schwarzschild black hole manifolds for all angular momenta

Roland Donninger

Price's Law states that linear perturbations of a Schwarzschild black hole fall off as

t^{-2\ell-3}

for

t \to \infty

provided the initial data decay sufficiently fast at spatial infinity. Moreover, if the perturbations are initially static (i.e., their ...

2011

Horava gravity versus thermodynamics: The black hole case

Sergey Sibiryakov, Diego Blas Temino

Under broad assumptions, breaking of Lorentz invariance in gravitational theories leads to tension with unitarity because it allows for processes that apparently violate the second law of thermodynamics. The crucial ingredient of this argument is the exist ...

2011

GOLD MEMBRANES WITH LARGE ARRAYS OF SUB-µm HOLES FABRICATED BY WAFER-SCALE NANOSPHERE LITHOGRAPHY

Jürgen Brugger, Harry Heinzelmann, Mona Julia Katharina Klein, Raphaël Pugin

Gold membranes with large arrays of sub-µm holes were fabricated and optically characterized. The fabrication is a combination of a bottom-up, self-assembly based patterning technique, Nanosphere Lithography (NSL), and standard microfabrication. This was a ...

2011

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On pointwise decay of linear waves on a Schwarzschild black hole background

Efficient Interior Point Methods for Multistage Problems Arising in Receding Horizon Control

Efficient Interior Point Methods for Multistage Problems Arising in Receding Horizon Control

Deflector-jets affected by pre-aerated approach flow

Hole and notch sensitivity of aluminium replicated foam

Activation Energies for the Rate-Limiting Step in Water Photooxidation by Nanostructured alpha-Fe2O3 and TiO2

Ordered systems of site-controlled pyramidal quantum dots incorporated in photonic crystal cavities

A proof of Price's Law on Schwarzschild black hole manifolds for all angular momenta

Horava gravity versus thermodynamics: The black hole case

GOLD MEMBRANES WITH LARGE ARRAYS OF SUB-µm HOLES FABRICATED BY WAFER-SCALE NANOSPHERE LITHOGRAPHY

On pointwise decay of linear waves on a Schwarzschild black hole background

Efficient Interior Point Methods for Multistage Problems Arising in Receding Horizon Control

Efficient Interior Point Methods for Multistage Problems Arising in Receding Horizon Control

Activation Energies for the Rate-Limiting Step in Water Photooxidation by Nanostructured alpha-Fe2O3 and TiO2

Deflector-jets affected by pre-aerated approach flow

Hole and notch sensitivity of aluminium replicated foam

Ordered systems of site-controlled pyramidal quantum dots incorporated in photonic crystal cavities

A proof of Price's Law on Schwarzschild black hole manifolds for all angular momenta

Horava gravity versus thermodynamics: The black hole case

GOLD MEMBRANES WITH LARGE ARRAYS OF SUB-µm HOLES FABRICATED BY WAFER-SCALE NANOSPHERE LITHOGRAPHY