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Circumbinary exoplanets and brown dwarfs with the Laser Interferometer Space Antenna
Camilla Danielski, Valeriya Korol, Nicola Tamanini +1
We explore the prospects for the detection of giant circumbinary exoplanets and brown dwarfs (BDs) orbiting Galactic double white dwarfs binaries (DWDs) with the Laser Interferomet…
High angular resolution gravitational wave astronomy
John Baker, Tessa Baker, Carmelita Carbone +19
Since the very beginning of astronomy the location of objects on the sky has been a fundamental observational quantity that has been taken for granted. While precise two dimensiona…
Unveiling the Gravitational Universe at μ-Hz Frequencies
Alberto Sesana, Natalia Korsakova, Manuel Arca Sedda +31
We propose a space-based interferometer surveying the gravitational wave (GW) sky in the milli-Hz to -Hz frequency range. By the 2040s', the -Hz frequency band, bracketed in…
The Missing Link in Gravitational-Wave Astronomy: Discoveries waiting in the decihertz range
Manuel Arca Sedda, Christopher P. L. Berry, Karan Jani +27
The gravitational-wave astronomical revolution began in 2015 with LIGO's observation of the coalescence of two stellar-mass black holes. Over the coming decades, ground-based detec…
Testing modified gravity at cosmological distances with LISA standard sirens
E. Belgacem, G. Calcagni, M. Crisostomi +18
Modifications of General Relativity leave their imprint both on the cosmic expansion history through a non-trivial dark energy equation of state, and on the evolution of cosmologic…
Quantum gravity and gravitational-wave astronomy
Gianluca Calcagni, Sachiko Kuroyanagi, Sylvain Marsat +3
We investigate possible signatures of quantum gravity which could be tested with current and future gravitational-wave (GW) observations. In particular, we analyze how quantum grav…
The peculiar acceleration of stellar-origin black hole binaries: measurement and biases with LISA
Nicola Tamanini, Antoine Klein, Camille Bonvin +2
We investigate the ability of the Laser Interferometer Space Antenna (LISA) to measure the center of mass acceleration of stellar-origin black hole binaries emitting gravitational…
Gravitational-wave luminosity distance in quantum gravity
Gianluca Calcagni, Sachiko Kuroyanagi, Sylvain Marsat +3
Dimensional flow, the scale dependence of the dimensionality of spacetime, is a feature shared by many theories of quantum gravity (QG). We present the first study of the consequen…
Cosmology and the Early Universe
B. S. Sathyaprakash, Enis Belgacem, Daniele Bertacca +15
This Astro-2020 White Paper deals with what we might learn from future gravitational wave observations about the early universe phase transitions and their energy scales, primordia…
Astro2020 Science White Paper: Cosmology with a Space-Based Gravitational Wave Observatory
Robert Caldwell, Mustafa Amin, Craig Hogan +8
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 -- w…