Personal Equation of Astronomical Observers

Enhanced Management of Personal Astronomical Data with FITSManager

Although the roles of data centers and computing centers are becoming more and more important, and on-line research is becoming the mainstream for astronomy, individual research based on locally hosted data is still very common. With the increase of personal storage capacity, it is easy to find hundreds to thousands of FITS files in the personal computer of an astrophysicist. Because Flexible I...

Optimal design of boundary observers for the wave equation

Abstract. In this article, we consider the wave equation on a domain of IR with Lipschitz boundary. For every observable subset Γ of the boundary ∂Ω the observability constant provides an account for the quality of the reconstruction in some inverse problem. Our objective is here to determine what is, in some appropriate sense, the best observation domain. After having defined a randomized obse...

Numerical observers with vanishing viscosity for the 1d wave equation

Boundary Controllers and Observers for the Linearized Schrödinger Equation

We consider a problem of stabilization of the linearized Schrödinger equation using boundary actuation and measurements. We propose two different control designs. First, a simple proportional collocated boundary controller is shown to exponentially stabilize the system. However, the decay rate of the closed-loop system cannot be prescribed. The second, full-state feedback boundary control desig...

Astronomical & Astrophysical Transactions The Journal of the Eurasian Astronomical Society

Astronomical & Astrophysical Transactions The Journal of the Eurasian Astronomical Society Publication details, including instructions for authors and subscription information: http://www.informaworld.com/smpp/title~content=t713453505 Flux density evolution of the sources 3C273, 3C279 and 3C454.3 at the frequencies 102 MHz-36.8 GHz A. E. Volvach a; L. N. Volvach a; M. G. Larionov b; H. D. Aller...