Chasing gravitational waves with the Cherenkov Telescope Array

J. G. Green (Author), Saptashwa Bhattacharyya (Author), Judit Pérez Romero (Author), Samo Stanič (Author), Veronika Vodeb (Author), Serguei Vorobiov (Author), Danilo Zavrtanik (Author), Marko Zavrtanik (Author), Miha Živec (Author)

Abstract

The detection of gravitational waves (GWs) from a binary neutron star (BNS) merger by Advanced LIGO and Advanced Virgo (GW170817), along with the discovery of the electromagnetic counterparts of this GW event, ushered in a new era of multimessenger astronomy, providing the first direct evidence that BNS mergers are progenitors of short gamma-ray bursts (GRBs). Such events may also produce very-high-energy (VHE, > 100 GeV) photons which have yet to be detected in coincidence with a GW signal. The Cherenkov Telescope Array (CTA) is a next-generation VHE observatory which aims to be indispensable in this search, with an unparalleled sensitivity and ability to slew anywhere on the sky within a few tens of seconds. Achieving such a feat will require a comprehensive real-time strategy capable of coordinating searches over potentially very large regions of the sky. This work will evaluate and provide estimations on the number of GW-CTA events determined from simulated BNS systems and short GRBs, considering both on and off-axis emission. In addition, we will present and discuss the prospects of potential follow-up strategies with CTA.

Keywords

gravitational waves;binary neutron star merger;short gamma-ray bursts;

Data

Language:	English
Year of publishing:	2023
Typology:	1.08 - Published Scientific Conference Contribution
Organization:	UNG - University of Nova Gorica
UDC:	539.1
COBISS:	164621571
ISSN:	1824-8039
Views:	664
Downloads:	4
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