Joint search for gravitational waves and high energy neutrinos with the VIRGO-LIGO and ANTARES detectors

Abstract : Cataclysmic cosmic events can be plausible sources of both gravitational waves (GW) and high- energy neutrinos (HEN), alternative cosmic messengers carrying information from the innermost regions of the astrophysical engines. Possible sources include long and short gamma-ray bursts (GRBs) but also low-luminosity or choked GRBs, with no or low gamma-ray emissions. Combin- ing directional and timing informations on HEN events and GW bursts through GW+HEN coin- cidences provides a novel way of constraining the processes at play in the sources. It also enables to improve the sensitivity of both channels relying on the independence of backgrounds in each experiment. A first search was performed with concomitant data from 2007, when ANTARES was half its final size. This contribution focuses on the second, optimised search performed with data taken in 2009-2010, during the Virgo VSR2-3 and LIGO L6 science runs (with improved sensitivity) and with ANTARES in its final configuration. While the 2007 search has allowed to place the first upper limits on the density of joint GW+HEN emitters, the 2009-2010 analysis will provide a significant improvement in sensitivity.
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Veronique Van Elewyck. Joint search for gravitational waves and high energy neutrinos with the VIRGO-LIGO and ANTARES detectors. 34th International Cosmic Ray Conference, Jul 2015, The Hague, Netherlands. pp.1112, ⟨10.22323/1.236.1112⟩. ⟨hal-01555012⟩

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