PT Journal AU ANTARES Collaboration (Adrian-Martinez, Sea Aguilar, JA Bigongiari, C Dornic, D Emanuele, U Gomez-Gonzalez, JP Hernandez-Rey, JJ Mangano, S Ruiz-Rivas, J Salesa, F Sanchez-Losa, A Toscano, S Yepes, H Zornoza, JD Zuñiga, J TI Search for relativistic magnetic monopoles with the ANTARES neutrino telescope SO Astroparticle Physics JI Astropart Phys. PY 2012 BP 634 EP 640 VL 35 IS 10 DI 10.1016/j.astropartphys.2012.02.007 AB Magnetic monopoles are predicted in various unified gauge models and could be produced at intermediate mass scales. Their detection in a neutrino telescope is facilitated by the large amount of light emitted compared to that from muons. This paper reports on a search for upgoing relativistic magnetic monopoles with the ANTARES neutrino telescope using a data set of 116 days of live time taken from December 2007 to December 2008. The one observed event is consistent with the expected atmospheric neutrino and muon background, leading to a 90% C.L. upper limit on the monopole flux between 1.3 x 10-(17) and 8.9 x 10(-17) CM-2 s(-1) sr(-1) for monopoles with velocity beta >= 0.625. ER