PIRSA:10060087 Conference

DOI10.48660/10060087

Conference/School: Theory Meets Data Analysis at Comparable and Extreme Mass Ratios - 2010

Pollney, D. (2010). Nonlinear memory in numerical waveforms. Perimeter Institute. https://pirsa.org/10060087

Pollney, Denis. Nonlinear memory in numerical waveforms. Perimeter Institute, Jun. 26, 2010, https://pirsa.org/10060087 

@misc{ pirsa_PIRSA:10060087,
  doi = {10.48660/10060087},
  url = {https://pirsa.org/10060087},
  author = {Pollney, Denis},
  keywords = {},
  language = {en},
  title = {Nonlinear memory in numerical waveforms},
  publisher = {Perimeter Institute},
  year = {2010},
  month = {jun},
  note = {PIRSA:10060087 see, \url{https://pirsa.org}}
}

Abstract

In addition to the dominant oscillatory modes gravitational waves contain non-oscillatory components which arise as drifts or offsets in the signals. Nonlinear gravitational memory arises from a change in mass multipole moments of a boundsystem due to contributions from the emitted gravitationalwaves. In practice it appears as a slowly monotonically growingsignal during the inspiral which sees a rapid rise at thetime of merger. The low amplitude and non-oscillatory natureof these signals present unique challenges for modeling.I discuss recent efforts to evaluate these signals in numericalsimulations using characteristic extraction as well as theirpotential relevance to detection.

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