Goto

Collaborating Authors

 telescope array


Solving Online Resource-Constrained Scheduling for Follow-Up Observation in Astronomy: a Reinforcement Learning Approach

Zhang, Yajie, Yu, Ce, Sun, Chao, Wei, Jizeng, Ju, Junhan, Tang, Shanjiang

arXiv.org Artificial Intelligence

In the astronomical observation field, determining the allocation of observation resources of the telescope array and planning follow-up observations for targets of opportunity (ToOs) are indispensable components of astronomical scientific discovery. This problem is computationally challenging, given the online observation setting and the abundance of time-varying factors that can affect whether an observation can be conducted. This paper presents ROARS, a reinforcement learning approach for online astronomical resource-constrained scheduling. To capture the structure of the astronomical observation scheduling, we depict every schedule using a directed acyclic graph (DAG), illustrating the dependency of timing between different observation tasks within the schedule. Deep reinforcement learning is used to learn a policy that can improve the feasible solution by iteratively local rewriting until convergence. It can solve the challenge of obtaining a complete solution directly from scratch in astronomical observation scenarios, due to the high computational complexity resulting from numerous spatial and temporal constraints. A simulation environment is developed based on real-world scenarios for experiments, to evaluate the effectiveness of our proposed scheduling approach. The experimental results show that ROARS surpasses 5 popular heuristics, adapts to various observation scenarios and learns effective strategies with hindsight.


StarWhisper Telescope: Agent-Based Observation Assistant System to Approach AI Astrophysicist

Wang, Cunshi, Hu, Xinjie, Zhang, Yu, Chen, Xunhao, Du, Pengliang, Mao, Yiming, Wang, Rui, Li, Yuyang, Wu, Ying, Yang, Hang, Li, Yansong, Wang, Beichuan, Mu, Haiyang, Wang, Zheng, Tian, Jianfeng, Ge, Liang, Mao, Yongna, Li, Shengming, Lu, Xiaomeng, Zou, Jinhang, Huang, Yang, Sun, Ningchen, Zheng, Jie, He, Min, Bai, Yu, Jin, Junjie, Wu, Hong, Shang, Chaohui, Liu, Jifeng

arXiv.org Artificial Intelligence

With the rapid advancements in Large Language Models (LLMs), LLM-based agents have introduced convenient and user-friendly methods for leveraging tools across various domains. In the field of astronomical observation, the construction of new telescopes has significantly increased astronomers' workload. Deploying LLM-powered agents can effectively alleviate this burden and reduce the costs associated with training personnel. Within the Nearby Galaxy Supernovae Survey (NGSS) project, which encompasses eight telescopes across three observation sites, aiming to find the transients from the galaxies in 50 mpc, we have developed the \textbf{StarWhisper Telescope System} to manage the entire observation process. This system automates tasks such as generating observation lists, conducting observations, analyzing data, and providing feedback to the observer. Observation lists are customized for different sites and strategies to ensure comprehensive coverage of celestial objects. After manual verification, these lists are uploaded to the telescopes via the agents in the system, which initiates observations upon neutral language. The observed images are analyzed in real-time, and the transients are promptly communicated to the observer. The agent modifies them into a real-time follow-up observation proposal and send to the Xinglong observatory group chat, then add them to the next-day observation lists. Additionally, the integration of AI agents within the system provides online accessibility, saving astronomers' time and encouraging greater participation from amateur astronomers in the NGSS project.


Seti: alien hunters get a boost as AI helps identify promising signals from space

#artificialintelligence

An international team of researchers looking for signs of intelligent life in space have used artificial intelligence (AI) to reveal eight promising radio signals in data collected at a US observatory. The results of their research, published in Nature Astronomy are remarkable. The team hasn't yet carried out an exhaustive analysis, but the paper suggests the signals have many of the characteristics we would expect if they were artificially generated. In other words, they are the kinds of signals we might pick up from an extraterrestrial civilisation broadcasting into space. A cursory review of the new paper suggest these are indeed promising signals. They're much more compelling than what is perhaps the most famous Seti candidate, the "Wow!" signal, radio emission bearing the hallmarks of an extraterrestrial origin that was collected by an Ohio telescope in 1977.