ar X iv : a st ro - p h / 99 09 00 7 v 1 1 S ep 1 99 9 Kinematics of ionized and molecular hydrogen in the core of M 100

ar X iv : a st ro - p h / 99 09 00 9 v 1 1 S ep 1 99 9 Any Recent Progress in the Theory of Pulsating Stars ? Alfred

To answer the topical question we survey synoptically the recent literature in pulsation theory. We restrict the topics to those which are not dealt with otherwise in this volume. We address research on roAp stars, EC 14026 variables, strange modes, luminous blue variables, pulsation-rotation coupling, and pulsations in compact objects seen from the classical, as well as the relativistic, viewp...

ar X iv : a st ro - p h / 99 09 05 7 v 1 2 S ep 1 99 9 Using Perturbative Least Action to Run N Body Simulations Back in Time

In this report, we present a new method for reconstructing N body initial conditions from a proscribed final density field. This method, Perturbative Least Action (PLA) is similar to traditional least action approaches, except that orbits of particles are found as expansions around previously determined and physically motivated orbits.

ar X iv : a st ro - p h / 99 09 17 7 v 1 1 0 Se p 19 99 Status of VLBI Observations at 1 mm Wavelength and Future Prospects

ar X iv : a st ro - p h / 99 11 40 7 v 1 2 2 N ov 1 99 9 The First Five Minutes of a Core Collapse Super - nova : Multidimensional Hydrodynamic Models

ar X iv : a st ro - p h / 99 02 09 5 v 1 5 F eb 1 99 9 Radiospectra and Kinematics in Blazars

Broad band spectra of total and compact–scale radio emission from blazars, used in combination with kinematic information inferred from VLBI monitoring programs, can be applied successfully to better constrain the models of compact jets. We discuss here a " hands-on " approach for tying together the kinematic and spectral properties of radio emission from blazars.