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In this review, we discuss recent developments in both the theory and the experimental searches of magnetic monopoles in past, current and future colliders and in the Cosmos. The theoretical models include, apart from the standard Grand Unified Theories, extensions of the Standard Model that admit magnetic monopole solutions with finite energy and masses that can be as light as a few TeV. Specifically, we discuss, among other scenarios, modified Cho–Maison monopoles and magnetic monopoles in (string-inspired, higher derivative) Born–Infeld extensions of the hypercharge sector of the Standard Model. We also outline the conditions for which effective field theories describing the interaction of monopoles with photons are valid and can be used for result interpretation in monopole production at colliders. The experimental part of the review focuses on, past and present, cosmic and collider searches, including the latest bounds on monopole masses and magnetic charges by the ATLAS and MoEDAL experiments at the LHC, as well as prospects for future searches.

This paper presents a gamma-ray down-going induced muon analysis combining the Gamma-ray bursts Coordinates Network (which announces a possible GRB event) with a blind strategy. The goal of this analysis is to find an astrophysical source through the ability of distinguishing between a real alert (signal) and a fake one (background), through comparisons between the position of an Antares event and the position of the alert, leading us to a better understanding of gamma-ray bursts.

The ANTARES collaboration has recently demonstrated a rapid progress in the construction of the 0.1 km²-scale neutrino detector in the Mediterranean sea. At present the underwater setup consists of 5 active detector "lines" (of the 12 lines foreseen in the final configuration) and it is taking physics data with nearly nominal efficiency. Currently the atmospheric muon flux and its angular distribution are under intensive studies. Meanwhile over hundred upward-going neutrino events have been extracted from the largely overwhelming background originated by the downward going muons. Thus the concept and the design of the undersea experiment now appear to be confidently proved. The detector construction is to be completed in spring 2008.

The quest to understand the nature dark matter is one of the most relevant ones in Particle Physics nowadays, since it constitutes most of the matter of the Universe and it is still unknown what it is made of. In order to answer to this question, a multi-front attack is needed because our knowledge of its properties is very incomplete. Among the different experimental strategies, neutrino telescopes are very relevant tools. There are several promising sources to look at: the Sun, the Galactic Center, the Earth, dwarf galaxies, galaxy clusters… As an example of the power of neutrino telescopes, we can mention the analysis of the Sun, which offers the best sensitivity for spin dependent WIMP-nucleon scattering and is free of alternative astrophysical interpretations. In this talk I will review the status and prospects of the main present and future neutrino telescopes: ANTARES, IceCube and KM3NeT.

The ANTARES detector is currently the largest operating neutrino telescope in the Northern Hemisphere. Its scientific target is the detection of ultra-high energy cosmic neutrinos through measurement of Cherenkov radiation from neutrino-induced charged leptons. Here, an overview of the results of various analyses will be given, in particular for the searches of point-like sources and the opportunities for multi-messenger astronomy.