Skip to main content
eScholarship
Open Access Publications from the University of California

Gravitational waves from binary supermassive black holes missing in pulsar observations.

  • Author(s): Shannon, RM
  • Ravi, V
  • Lentati, LT
  • Lasky, PD
  • Hobbs, G
  • Kerr, M
  • Manchester, RN
  • Coles, WA
  • Levin, Y
  • Bailes, M
  • Bhat, NDR
  • Burke-Spolaor, S
  • Dai, S
  • Keith, MJ
  • Osłowski, S
  • Reardon, DJ
  • van Straten, W
  • Toomey, L
  • Wang, J-B
  • Wen, L
  • Wyithe, JSB
  • Zhu, X-J
  • et al.

Published Web Location

http://arxiv.org/abs/1509.07320
No data is associated with this publication.
Abstract

Gravitational waves are expected to be radiated by supermassive black hole binaries formed during galaxy mergers. A stochastic superposition of gravitational waves from all such binary systems would modulate the arrival times of pulses from radio pulsars. Using observations of millisecond pulsars obtained with the Parkes radio telescope, we constrained the characteristic amplitude of this background, A(c,yr), to be <1.0 × 10(-15) with 95% confidence. This limit excludes predicted ranges for A(c,yr) from current models with 91 to 99.7% probability. We conclude that binary evolution is either stalled or dramatically accelerated by galactic-center environments and that higher-cadence and shorter-wavelength observations would be more sensitive to gravitational waves.

Many UC-authored scholarly publications are freely available on this site because of the UC's open access policies. Let us know how this access is important for you.

Item not freely available? Link broken?
Report a problem accessing this item