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[Paper Review] A Horizon Study for Cosmic Explorer: Science, Observatories, and Community

M. Evans, R. X. Adhikari|arXiv (Cornell University)|Sep 20, 2021
Space Science and Extraterrestrial Life179 citations
TL;DR

A horizon study examining science goals, observatory planning, and community considerations for Cosmic Explorer.

ABSTRACT

This Horizon Study describes a next-generation ground-based gravitational-wave observatory: Cosmic Explorer. With ten times the sensitivity of Advanced LIGO, Cosmic Explorer will push gravitational-wave astronomy towards the edge of the observable universe ($z \sim 100$). The goals of this Horizon Study are to describe and evaluate design concepts for Cosmic Explorer; to plan for the United States' leadership in gravitational-wave astronomy; and to envisage the role of Cosmic Explorer in the international effort to build a "Third-Generation" (3G) observatory network that will make discoveries transformative across astronomy, physics, and cosmology.

Motivation & Objective

  • Clarify the science goals and programmatic priorities for Cosmic Explorer.
  • Assess observatory concepts, capabilities, and deployment pathways.
  • Evaluate community, collaboration, and governance aspects surrounding the project.
  • Identify gaps and needs in technology, infrastructure, and partnerships.

Proposed method

  • Literature and programmatic review to outline potential science cases for Cosmic Explorer.
  • Framework development to compare observatory concepts and their requirements.
  • Stakeholder analysis to understand community, collaboration, and governance implications.
  • Roadmap construction outlining timelines, milestones, and decision points.

Experimental results

Research questions

  • RQ1What are the primary science objectives envisioned for Cosmic Explorer?
  • RQ2What observatory configurations and capabilities are required to achieve these objectives?
  • RQ3How should the scientific community and governance structures be organized to support the project?
  • RQ4What gaps in technology, infrastructure, or partnerships must be addressed in the horizon study?

Key findings

  • The study identifies science goals, observatory concepts, and community considerations as core components.
  • It highlights the need for coordinated planning across science objectives, infrastructure, and governance.
  • The horizon study proposes a structured roadmap with milestones for Cosmic Explorer.
  • It emphasizes collaboration and governance models as essential to project success.

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This review was created by AI and reviewed by human editors.