• Corpus ID: 118982077

Astro2020 Science White Paper: Cosmology with a Space-Based Gravitational Wave Observatory

  title={Astro2020 Science White Paper: Cosmology with a Space-Based Gravitational Wave Observatory},
  author={Robert R. Caldwell and Mustafa A. Amin and Craig Hogan and Kelly Holley-Bockelmann and Daniel E. Holz and Ph. Jetzer and Ely D. Kovetz and Priyamvada Natarajan and David P. Shoemaker and Tristan L. Smith and Nicola Tamanini},
  journal={arXiv: Cosmology and Nongalactic Astrophysics},
There are two big questions cosmologists would like to answer -- How does the Universe work, and what are its origin and destiny? A long wavelength gravitational wave detector -- with million km interferometer arms, achievable only from space -- gives a unique opportunity to address both of these questions. A sensitive, mHz frequency observatory could use the inspiral and merger of massive black hole binaries as standard sirens, extending our ability to characterize the expansion history of the… 

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