Galactic black hole transient H1743-322 has been in outburst since UT 2009 May 26, (ATELs #2058, #2062). The RXTE PCA count rate has been dropping since 2009 June 23. We have analyzed the PCA data taken between 2009 June 26 and July 7. Quick fits to all sets with a power law + diskbb + smedge model were performed. While the flux was decreasing

Los Núcleos Galácticos Activos (AGN por sus siglas en inglés) han jugado seguramente un papel más importante del inicialmente pensado en el universo temprano y en su posterior evolución. De hecho, la visión que tienen los astrónomos del fenómeno AGN ha cambiado significativamente en los últimos 15 años. Los AGN ya no son únicamente fuentes con

Los últimos años han visto un avance importante en el estudio de los bulbos de las galaxias de disco. Éstos, que hasta los años 80 se creían objetos parecidos a galaxias elípticas en el centro de galaxias espirales, aparecen hoy como elementos controvertidos, con diversidad de estructuras, dinámicas y poblaciones estelares, que hacen pensar en más

Besides new observations, mining old photographic plates and CCD image archives represents an opportunity to recover and secure newly discovered asteroids, also to improve the orbits of Near Earth Asteroids (NEAs), Potentially Hazardous Asteroids (PHAs) and Virtual Impactors (VIs). These are the main research aims of the EURONEAR network. As stated

Context: For the first time, spectroscopic galaxy redshift surveys are enabling galaxies to be studied with the nearest quasars. This allows the dependence of the activity of a quasar on its environment to be studied in a more extensive way than before. Aims: We study the spatial distribution of galaxies and properties of groups of galaxies in the

Aims: We completed observations with the Effelsberg 100-m radio telescope to measure the polarised emission from a complete sample of compact steep-spectrum sources and improve our understanding of the physical conditions inside and around regions of radio emission embedded in dense interstellar environments. Methods: We observed the sources at