Since about 2002 the current-generation imaging air Cherenkov telescopes have discovered more than 50 new VHE γ-ray sources. More importantly, new extragalactic source classe have been discovered: radio galaxies, low-peaked BL Lac (LBL) objects, and quasars. BL Lacertae was the first LBL object that has been detected at VHE. With the MAGIC

After three years since the beginning of operation, the MAGIC telescope could observe several GRB events in the prompt and early afterglow phase. Thanks to its innovative design, the telescope could promptly react to incoming GCN alerts and rapidly slew to the burst coordinates within a typical delay of 50 seconds, performing observations with an

The preliminary results of STEPHI 2006 campaign are reported.

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In order to understand the influence of magnetic fields on the propagation properties of waves, as derived from different local helioseismology techniques, forward modeling of waves is required. Such calculations need a model in magnetohydrostatic equilibrium as an initial atmosphere through which to propagate oscillations. We provide a method to

Magnetic fields not only provide a basic tool for observing galaxies but constitute an important clue to interpret many dynamic processes taking place in them, mainly in spiral and irregular galaxies. As in the Sun, magnetic fields become important where gravity becomes lower, i.e. in the outermost regions. Any peripheric feature should be