Dark nights, bright stars

Bright and Dark Solitons

Departamento de Teoría de la Señal y Comunicaciones e Ingeniería Telemática Universidad de Valladolid, ETSI Telecomunicación, Campus Miguel Delibes s/n 47011 Valladolid, Spain Phone: +34 983 185545, Fax: +34 983 423667, e-mail: [email protected] Joule Physics Laboratory, School of Sciences, Institute of Materials Research University of Salford, Salford M5 4WT, UK Phone: +44 161 295 5079, Fax: +...

Two new bright Ae stars ⋆

Two newly identified Ae stars, ν Cyg and κ UMa, were discovered in the course of the Magnetic Survey of Bright MS stars (Monin et al. 2002). We present their Hα profiles along with measurements of their equivalent width and parameters of emission features. Emission in the Hα line of ν Cyg is variable on a time scale of 3 years. κ UMa exhibits weak emission which is rather stable. The emission i...

Seasonal affective disorder: the miseries of long dark nights?

Many were worried that reliable data could not be collected, but Sir Richard Doll decried the fact that six years into the epidemic we know so little-about crucial aspects ofthe spread of AIDS. In particular there is a desperate need for knowledge about the transmission rate ofHIV infection by vaginal intercourse, and several speakers pleaded for anonymous testing for HIV antibodies of routine ...

Bright Light from Dark Matter

Anisotropic dark energy stars

A model of compact object coupled to inhomogeneous anisotropic dark energy is studied. It is assumed a variable dark energy that suffers a phase transition at a critical density. The anisotropic Λ−Tolman-Oppenheimer-Volkoff equations are integrated to know the structure of these objects. The anisotropy is concentrated on a thin shell where the phase transition takes place, while the rest of the...