Grandma: a network to coordinate them all

S. Agayeva (Shamakhy Observatory); S. Alishov (Shamakhy Observatory),; S. Antier (APC); V. R. Ayvazian (Abastumani Observatory; Samtskhe-Javakheti; State University); J. M. Bai (Yunnan Observatories); A. Baransky (University; of Kyiv); K. Barynova (University of Kyiv); S. Basa (LAM); S. Beradze; (Abastumani Observatory; Samtskhe-Javakheti State University); E. Bertin; (IAP); J. Berthier (AGORA observatoire des Makes); M. Bla\v{z}ek (IAA-CSIC),; M. Bo\"er (ARTEMIS); O. Burkhonov (Ulugh Beg Astronomical Institute); A.; Burrell (OzGrav-UWA); A. Cailleau (IRAP); B. Chabert (OzGrav-UWA; IRAP); J.; C. Chen (WuZhou University); N. Christensen (ARTEMIS); A. Coleiro (APC); D.; Corre (IJCLab); M. W. Coughlin (University of Minnesota); D. Coward; (OzGrav-UWA); H. Crisp (OzGrav-UWA); C. Delattre (AGORA observatoire des; Makes); T. Dietrich (Universitat Potsdam); J. G. Ducoin (IJCLab); P. A.; Duverne (IJCLab); L. Eymar (ARTEMIS); P. Fock-Hang (AGORA observatoire des; Makes); B. Gendre (OzGrav-UWA); P. Hello (IJCLab); E. J. Howell (OzGrav-UWA),; R. Ya. Inasaridze (Abastumani Observatory; Samtskhe-Javakheti State; University); N. Ismailov (Shamakhy Observatory); D. A. Kann (IAA-CSIC); G. V.; Kapanadze (Abastumani Observatory; Samtskhe-Javakheti State University); S.; Karpov (FZU); A. Klotz (IRAP; UPS); N. Kochiashvili (Abastumani Observatory,; Samtskhe-Javakheti State University); C. Lachaud (APC); N. Leroy (IJCLab); A.; Le Van Su (LAM); W. X. Li (Tsinghua University); W. L. Lin (Tsinghua; University); P. Lognone (IJCLab); G. Marchal-Duval (IJCLab); R. Marron (APC),; M. Ma\v{s}ek (FZU); J. Mo (Tsinghua University); J. A. Moore (OzGrav-UWA); D.; Morris (UVI); R. Natsvlishvili (Abastumani Observatory); K. Noysena (ARTEMIS,; IRAP); N. B. Orange (OrangeWave Innovative Science); S. Perrigault (AGORA; observatoire des Makes); A. Peyrot (AGORA observatoire des Makes); M. Prouza; (FZU); T. Sadibekova (Ulugh Beg Astronomical Institute); D. Samadov (Shamakhy; Observatory); A. Simon (University of Kyiv); C. Stachie (ARTEMIS); J. P. Teng; (AGORA observatoire des Makes); P. Thierry (AGORA observatoire des Makes); C.; C. Th\"one (IAA-CSIC); Y. Tillayev (Ulugh Beg Astronomical Institute); D.; Turpin (CEA); A. de Ugarte Postigo (IAA-CSIC); F. Vachier (AGORA observatoire; des Makes); M. Vardosanidze (Abastumani Observatory; Samtskhe-Javakheti State; University); V. Vasylenko (University of Kyiv); Z. Vidadi (Shamakhy; Observatory); C. J. Wang (Yunnan Observatories); X. F. Wang (Yunnan; Observatories); S. Y. Yan (Tsinghua University); J. C. Zhang (Tsinghua; University); J. J. Zhang (Tsinghua University); and X. H. Zhang (Tsinghua; University)

arXiv:2008.03962·astro-ph.HE·November 17, 2021

Grandma: a network to coordinate them all

S. Agayeva (Shamakhy Observatory), S. Alishov (Shamakhy Observatory),, S. Antier (APC), V. R. Ayvazian (Abastumani Observatory, Samtskhe-Javakheti, State University), J. M. Bai (Yunnan Observatories), A. Baransky (University, of Kyiv), K. Barynova (University of Kyiv)

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TL;DR

GRANDMA is an international network of telescopes coordinating observations of transient sources like gravitational waves and gamma-ray bursts to improve the chances of detecting optical counterparts.

Contribution

This paper introduces GRANDMA, a novel global network coordinating multiple telescopes for transient source follow-up, with new organizational and methodological approaches.

Findings

01

Successful coordination of 25 telescopes across 70 scientists

02

Initial results demonstrate effective imaging strategies

03

Enhanced probability of optical counterpart detection

Abstract

GRANDMA is an international project that coordinates telescope observations of transient sources with large localization uncertainties. Such sources include gravitational wave events, gamma-ray bursts and neutrino events. GRANDMA currently coordinates 25 telescopes (70 scientists), with the aim of optimizing the imaging strategy to maximize the probability of identifying an optical counterpart of a transient source. This paper describes the motivation for the project, organizational structure, methodology and initial results.

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