9 v 1 1 3 A ug 1 99 7 STELLAR ARRHYTHMIAS

ar X iv : a st ro - p h / 99 08 17 3 v 1 1 6 A ug 1 99 9 On the Verge of Coalescence : a Dusty Group of Galaxies

We found a new, very compact group of galaxies characterized by a median projected separation between galaxies of 5.2/h kpc and a very low velocity dispersion. All the observed member galaxies show emission line spectra and a disturbed morphology. From these properties it emerges that this compact group is in an extremely advanced stage of evolution.

v - in t / 9 70 80 06 v 1 1 4 A ug 1 99 7 Introduction to the Hirota bilinear method

ar X iv : g r - qc / 9 70 80 57 v 1 2 4 A ug 1 99 7 Post – Newtonian Lagrange Planetary Equations

We present a method to study the time variation of the orbital parameters of a Post–Keplerian binary system undergoing a generic external perturbation. The method is the relativistic extension of the planetary Lagrangian equations. The theory only assumes the smallness of the external perturbation while relativistic effects are already included in the unperturbed problem. This is the major adva...

v 2 1 7 A ug 1 99 9 Thomas - Ehrman shifts in nuclei around 16 O and role of residual nuclear interaction

The asymmetry in the energy spectra between mirror nuclei (the Thomas-Ehrman shifts) around 16 O is investigated from a phenomeno-logical viewpoint. The recent data on proton-rich nuclei indicates that the residual nuclear interaction is reduced for the loosely bound s-orbit by as much as 30%, which originates in the broad radial distribution of the proton single-particle wave function.

ar X iv : h ep - p h / 97 08 30 9 v 1 1 1 A ug 1 99 7 CONNECTING HIGGS AND CONFINEMENT PHASE OF THE 3 D SU ( 2 ) HIGGS MODEL

The mass spectrum of the 3d SU(2) Higgs model for states with quantum numbers 0 ++ , 2 ++ and 1 −− as obtained from lattice simulations is presented in the Higgs and confinement regions, both for a small and a large scalar coupling. In the latter case it is possible to continuously connect the spectra and observe the transition from confining to Higgs physics via decay of flux loops.