The GRANDMA network in preparation for the fourth gravitational-wave   observing run

S. Agayeva; V. Aivazyan; S. Alishov; M. Almualla; C. Andrade; S.; Antier; J.-M. Bai; A. Baransky; S. Basa; P. Bendjoya; Z. Benkhaldoun; S.; Beradze; D. Berezin; U. Bhardwaj; M. Blazek; O. Burkhonov; E. Burns; S.; Caudill; N. Christensen; F. Colas; A. Coleiro; W. Corradi; M. W. Coughlin; T.; Culino; D. Darson; D. Datashvili; T. Dietrich; F. Dolon; D. Dornic; J.; Dubouil; J.-G. Ducoin; P.-A. Duverne; A. Esamdin; A. Fouad; F. Guo; V.; Godunova; P. Gokuldass; N. Guessoum; E. Gurbanov; R. Hainich; E. Hasanov; P.; Hello; T. Hussenot-Desenonges; R. Inasaridze; A. Iskandar; E. E. O. Ishida,; N. Ismailov; T. Jegou du Laz; D. A. Kann; G. Kapanadze; S. Karpov; R. W.; Kiendrebeogo; A. Klotz; N. Kochiashvili; A. Kaeouach; J.-P. Kneib; W. Kou; K.; Kruiswijk; S. Lombardo; M. Lamoureux; N. Leroy; A. Le Van Su; J. Mao; M.; Masek; T. Midavaine; A. Moeller; D. Morris; R. Natsvlishvili; F. Navarete; S.; Nissanke; K. Noonan; K. Noysena; N. B. Orange; J. Peloton; M. Pilloix; T.; Pradier; G. Raaijmakers; Y. Rajabov; J.-P. Rivet; Y. Romanyuk; L. Rousselot,; F. Ruenger; V. Rupchandani; T. Sadibekova; N. Sasaki; K. Smith; O. Sokoliuk,; X. Song; A. Simon; A. Takey; Y. Tillayev; I. Tosta e Melo; D. Turpin; A. de; Ugarte Postigo; M. Vardosanidze; X. F. Wang; G. de Wasseige; D. Vernet; Z.; Vidadi; J. Zhu; and Y. Zhu

arXiv:2207.10178·astro-ph.IM·July 28, 2022

The GRANDMA network in preparation for the fourth gravitational-wave observing run

S. Agayeva, V. Aivazyan, S. Alishov, M. Almualla, C. Andrade, S., Antier, J.-M. Bai, A. Baransky, S. Basa, P. Bendjoya, Z. Benkhaldoun, S., Beradze, D. Berezin, U. Bhardwaj, M. Blazek, O. Burkhonov, E. Burns, S., Caudill, N. Christensen, F. Colas, A. Coleiro, W. Corradi

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TL;DR

GRANDMA is a global telescope network designed to detect and study electromagnetic counterparts of gravitational-wave sources, preparing for the upcoming LIGO/VIRGO O4 run and expanding its transient astronomy capabilities.

Contribution

This paper provides an overview of GRANDMA's development, coordination, and readiness for the fourth gravitational-wave observing run, including its diverse telescope network and citizen science program.

Findings

01

GRANDMA has coordinated 30 telescopes worldwide.

02

The network is prepared for the LIGO/VIRGO O4 observational campaign.

03

GRANDMA can discover and follow up various astronomical transients.

Abstract

GRANDMA is a world-wide collaboration with the primary scientific goal of studying gravitational-wave sources, discovering their electromagnetic counterparts and characterizing their emission. GRANDMA involves astronomers, astrophysicists, gravitational-wave physicists, and theorists. GRANDMA is now a truly global network of telescopes, with (so far) 30 telescopes in both hemispheres. It incorporates a citizen science programme (Kilonova-Catcher) which constitutes an opportunity to spread the interest in time-domain astronomy. The telescope network is an heterogeneous set of already-existing observing facilities that operate coordinated as a single observatory. Within the network there are wide-field imagers that can observe large areas of the sky to search for optical counterparts, narrow-field instruments that do targeted searches within a predefined list of host-galaxy candidates,…

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