The Gravitational-wave Optical Transient Observer (GOTO)

引力波光学瞬变观测者（GOTO）数据管道与瞬变发现工作流

The Gravitational-wave Optical Transient Observer (GOTO) data pipeline and workflow for transient discovery

本文介绍GOTO望远镜阵列的低延迟数据管道与工作流，通过差分图像分析实现瞬变候选体的快速发现（快门关闭后约7分钟），并描述后续自动化与人工处理流程，满足即时发现、报告和表征早期瞬变的需求。

Transient-optimised real-bogus classification with Bayesian Convolutional Neural Networks -- sifting the GOTO candidate stream

Large-scale sky surveys have played a transformative role in our understanding of astrophysical transients, only made possible by increasingly powerful machine learning-based filtering to accurately sift through the vast quantities of incoming data generated. In this paper, we present a new real-bogus classifier based on a Bayesian convolutional neural network that provides nuanced, uncertainty-aware classification of transient candidates in difference imaging, and demonstrate its application to the datastream from the GOTO wide-field optical survey. Not only are candidates assigned a well-cal…

GOTO望远镜控制系统

The GOTO Telescope Control System

本文介绍GOTO望远镜控制系统（G-TeCS），一个管理双站点四节点机器人望远镜网络的Python软件包，通过中央调度与独立守护进程实现完全自主运行。

The Burst Observer and Optical Transient Exploring System in the multi-messenger astronomy era

The Burst Observer and Optical Transient Exploring System (BOOTES) was first designed as an asset of autonomous telescopes that started to be deployed in 1998, taking 24 years to be fully developed around the Earth. Nowadays BOOTES has became a global network of robotic telescopes, being the first one present in all continents, as of 2022. Here we present the details of the network and review its achievements over the last two decades regarding follow-up observations of high-energy transient events. Moreover, considering the recent operations of neutrino and gravitational wave detectors, some …

How can we distinguish transient pulsars from SETI beacons?

How would observers differentiate Beacons from pulsars or other exotic sources, in light of likely Beacon observables? Bandwidth, pulse width and frequency may be distinguishing features. Such transients could be evidence of civilizations slightly higher than ourselves on the Kardashev scale.

跨越软伽马射线能区：利用 Compton Spectrometer and Imager (COSI) 和 Background and Transient Observer (BTO) 中的同时探测来理解天体物理暂现源

Across the soft gamma-ray regime: utilizing simultaneous detections in the Compton Spectrometer and Imager (COSI) and the Background and Transient Observer (BTO) to understand astrophysical transients

本文介绍了COSI任务及其搭载的BTO学生项目，通过结合两者的宽能段光谱数据，可对伽马射线暴、磁星耀斑等暂现源物理现象进行约束，并预计BTO每年可探测约150个伽马射线暴。

Initial follow-up of optical transients with COLORES using the BOOTES network

The Burst Observer and Optical Transient Exploring System (BOOTES) is a network of telescopes that allows the continuous monitoring of transient astrophysical sources. It was originally devoted to the study of the optical emission from gamma-ray bursts (GRBs) that occur in the Universe. In this paper we show the initial results obtained using the spectrograph COLORES (mounted on BOOTES-2), when observing optical transients (OTs) of diverse nature.

NaI和CsI闪烁体模块中余辉特征的研究：用于COSI上的Background and Transient Observer仪器

A Study of Afterglow Signatures in NaI and CsI Scintillator Modules for the Background and Transient Observer Instrument on COSI

本文研究了NaI(Tl)和CsI(Tl)探测器在HIMAC加速器辐照下的余辉特征，发现CsI余辉持续时间显著长于NaI，导致死时间和能量阈值大幅增加，因此NaI更适合BTO任务。

The Astrophysical Multimessenger Observatory Network (AMON)

We summarize the science opportunity, design elements, current and projected partner observatories, and anticipated science returns of the Astrophysical Multimessenger Observatory Network (AMON). AMON will link multiple current and future high-energy, multimessenger, and follow-up observatories together into a single network, enabling near real-time coincidence searches for multimessenger astrophysical transients and their electromagnetic counterparts. Candidate and high-confidence multimessenger transient events will be identified, characterized, and distributed as AMON alerts within the netw…

Skynet's New Observing Mode: The Campaign Manager

Built in 2004, the Skynet robotic telescope network originally consisted of six 0.4 m telescopes located at the Cerro-Tololo Inter-American Observatory in the Chilean Andes. The network was designed to carry out simultaneous multi-wavelength observations of gamma-ray bursts (GRBs) when they are only tens of seconds old. To date, the network has been expanded to ~20 telescopes, including a 20 m radio telescope, that span four continents and five countries. The Campaign Manager (CM) is a new observing mode that has been developed for Skynet. Available to all Skynet observers, the CM semi-autonom…

Bayesian parameter estimation using conditional variational autoencoders for gravitational-wave astronomy

Gravitational wave (GW) detection is now commonplace and as the sensitivity of the global network of GW detectors improves, we will observe $\mathcal{O}(100)$s of transient GW events per year. The current methods used to estimate their source parameters employ optimally sensitive but computationally costly Bayesian inference approaches where typical analyses have taken between 6 hours and 5 days. For binary neutron star and neutron star black hole systems prompt counterpart electromagnetic (EM) signatures are expected on timescales of 1 second -- 1 minute and the current fastest method for ale…

GERry：一个用于优化引力波事件电磁对应体搜寻的代码

GERry: A Code to Optimise the Hunt for the Electromagnetic Counter-parts to Gravitational Wave Events

针对引力波事件电磁对应体搜寻中因稀缺、微弱及定位差导致的观测与识别难题，提出了引力波电磁恢复代码GERry，通过综合分析时空覆盖、消光及光变演化量化观测活动性能，助力优化策略并提升对应体探测概率。