From the first GW detections to multi-messenger observations including CTA: insight and prospects
Barbara Patricelli
University of Pisa & INFN-Pisa
Lundi 04/02/2019, 11:00-12:00
Bat 141, salle André Berthelot Masque obligatoire; en cas de nécessité de dépassement, contacter préalablement le chef d’installation., CEA Paris-Saclay

The recent detection of gravitational waves (GWs) from a binary neutron star (BNS) merger, in coincidence with a weak short GRB, opened the era of multi-messenger astronomy and provided the first direct evidence that at least a fraction of BNSs are progenitors of short GRBs. One of the challenges for future multi-messenger observations will be the detection of short GRBs at very-high energies (VHE, > 20 GeV) in association with GWs: this will allow us to better understand the physics of the GRB outflow and their radiation mechanisms. The Cherenkov Telescope Array (CTA), an advanced, next generation ground-based facility, will be fundamental for the EM follow-up of transient GW events at VHE, owing to its unprecedented sensitivity, rapid response (few tens of seconds) and capability to monitor large sky areas via survey-mode operation.

In this talk I discuss what we learned from the recent GW and multi-messenger detections and I present a comprehensive study on the prospects for joint GW and VHE EM observations of merging BNSs with Advanced LIGO, Advanced Virgo and CTA.

Contact : François BRUN


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