Main Image
Volume 358 - 36th International Cosmic Ray Conference (ICRC2019) - GRI - Gamma Ray Indirect
The gravitational wave follow-up program of the Cherenkov Telescope Array
M. Seglar-Arroyo,* E. Bissaldi, A. Bulgarelli, A. Carosi, G. Cella, T. Di Girolamo, T. Gasparetto, G. Ghirlanda, B. Humensky, S. Inoue, F. Longo, L. Nava, B. Patricelli, M. Razzano, D. Ribeiro, F. Schüssler, A. Stamerra, G. Stratta, S. Vergani
*corresponding author
Full text: pdf
Pre-published on: 2019 July 22
Published on:
Abstract
The birth of gravitational-wave / electromagnetic astronomy was heralded by the joint observation of gravitational waves (GWs) from a binary neutron star (BNS) merger by Advanced LIGO and Advanced Virgo, GW170817, and of gamma-rays from the short gamma-ray burst GRB170817A by the Fermi Gamma-ray Burst Monitor (GBM) and INTEGRAL. This detection provided the first direct evidence that at least a fraction of BNSs are progenitors of short GRBs. GRBs are now also known to emit very-high-energy (VHE, > 100 GeV) photons as has been shown by recent independent detections of the GRBs 1901114C and 180720B by the ground-based gamma-ray de- tectors MAGIC and H.E.S.S. In the next years, the Cherenkov Telescope Array (CTA) will boost the searches for VHE counterparts thanks to its unprecedented sensitivity, rapid response and ca- pability to monitor large sky areas via survey-mode operation. In this contribution, we present the CTA program of observations following the detection of GW events. We discuss various follow- up strategies and links to multi-wavelength and multi-messenger observations. Finally we outline the capabilities and prospects of detecting VHE emission from GW counterparts.
Open Access
Creative Commons LicenseCopyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.