标题： 拟议的伽马射线暴探测器网络在全球导航卫星系统伽利略G2上 显示英文标题

标题： A proposed network of Gamma-ray Burst detectors on the Global Navigation Satellite System Galileo G2

摘要： 伽马射线暴的精确定位仍然是一个关键任务。 虽然历史上，定位精度的提高导致了余辉辐射的发现，并通过红移测量实现了它们的宇宙分布，但最近的需求来自于研究中子星合并的千新星的潜力。 引力波探测器预计在未来十年内提供的定位精度不会好于10平方度。 随着合并探测范围的扩大，伽马射线和千新星辐射的强度下降，使得在大误差框中识别它们成为一个挑战。 因此，通过伽马射线辐射进行定位似乎是缓解这个问题的最佳机会。 在这里，我们建议为一些第二代伽利略卫星配备专用的伽马射线暴探测器。 这可以节省为专用伽马射线暴网络的发射和卫星的成本，较大的轨道半径有利于三角定位，而且完美的位置和时间精度是免费的。 我们展示了三角定位精度的模拟，证明像GRB 170817A这样微弱的短伽马射线暴可以被定位到1度半径（1 sigma）。 显示英文摘要

摘要： The accurate localization of gamma-ray bursts remains a crucial task. While historically, improved localization have led to the discovery of afterglow emission and the realization of their cosmological distribution via redshift measurements, a more recent requirement comes with the potential of studying the kilonovae of neutron star mergers. Gravitational wave detectors are expected to provide locations to not better than 10 square degrees over the next decade. With their increasing horizon for merger detections also the intensity of the gamma-ray and kilonova emission drops, making their identification in large error boxes a challenge. Thus, a localization via the gamma-ray emission seems to be the best chance to mitigate this problem. Here we propose to equip some of the second generation Galileo satellites with dedicated GRB detectors. This saves costs for launches and satellites for a dedicated GRB network, the large orbital radius is beneficial for triangulation, and perfect positional and timing accuracy come for free. We present simulations of the triangulation accuracy, demonstrating that short GRBs as faint as GRB 170817A can be localized to 1 degree radius (1 sigma).