GRANDMA对先进LIGO与先进Virgo第三次观测活动的观测
高能天体物理现象
2020-07-08 v2
摘要
GRANDMA是一个由25台不同口径望远镜组成的网络，包含测光与光谱观测设施。该网络旨在协调引力波候选警报的后续观测，特别是那些定位不确定性较大的警报，以缩短初始探测与光学确认之间的延迟。本文中，我们详述GRANDMA在先进LIGO/先进Virgo第三次观测运行（O3）期间的观测表现，重点关注O3的后半段；其中包括有关覆盖情况与候选体可能天体物理起源的汇总统计。为此，我们根据引力波候选触发时间、观测及总覆盖之间的延迟来量化观测效率。借助优化且稳健的协调系统，GRANDMA对约90%的引力波候选警报进行了后续观测，即56个候选体中的49个。这在O3期间覆盖了超过9000平方度。对于50%的警报，引力波候选触发至首次观测的延迟低于1.5小时。我们在O3期间未探测到任何引力波候选体的电磁对应体，这很可能源于极大的定位区域（平均数千平方度）以及候选体相对较大的距离（60%的双中子星候选体距离超过200 Mpc）。我们对两个潜在双中子星并合事件（GW190425与S200213t）推导了潜在千新星性质的约束，假设事件位置已被成像。
引用
@article{arxiv.2004.04277,
title = {GRANDMA Observations of Advanced LIGO's and Advanced Virgo's Third Observational Campaign},
author = {S. Antier and S. Agayeva and M. Almualla and S. Awiphan and A. Baransky and K. Barynova and S. Beradze and M. Blažek and M. Boer and O. Burkhonov and N. Christensen and A. Coleiro and D. Corre and M. W. Coughlin and H. Crisp and T. Dietrich and J. -G. Ducoin and P. -A. Duverne and G. Marchal-Duval and B. Gendre and P. Gokuldass and H. B. Eggenstein and L. Eymar and P. Hello and E. J. Howell and N. Ismailov and D. A. Kann and S. Karpov and A. Klotz and N. Kochiashvili and C. Lachaud and N. Leroy and W. L. Lin and W. X. Li and M. Mašek and J. Mo and R. Menard and D. Morris and K. Noysena and N. B. Orange and M. Prouza and R. Rattanamala and T. Sadibekova and D. Saint-Gelais and M. Serrau and A. Simon and C. Stachie and C. C. Thöne and Y. Tillayev and D. Turpin and A. de Ugarte Postigo and V. Vasylenko and Z. Vidadi and M. Was and X. F. Wang and J. J. Zhang and T. M. Zhang and X. H. Zhang},
journal= {arXiv preprint arXiv:2004.04277},
year = {2020}
}
备注
31 pages, 15 figures