English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We propose, within the effective one body (EOB) approach, a new, resummed,analytical representation of the gravitational wave energy flux absorbed by asystem of two circularized (nonspinning) black holes. This expression is suchto be well-behaved in the strong-field, fast motion regime, notably up to theEOB-defined last unstable orbit. Building conceptually upon the procedureadopted to resum the multipolar asymptotic energy flux, we introduce a {\itmultiplicative} decomposition of the multipolar absorbed flux made by threefactors: (i) the leading-order contribution, (ii) an "effective source" and(iii) a new residual amplitude correction $(\tilde{\rho}_\lm^H)^{2\ell}$. Inthe test-mass limit, we use a frequency-domain perturbative approach toaccurately compute numerically the horizon-absorbed fluxes along a sequence ofstable and unstable circular orbits and we extract from them the functions$\tilde{\rho}_\lm^H$. These quantities are then fitted via rational functions.The resulting analytically represented test-mass knowledge is then suitably{\it hybridized} with lower-order analytical information that is valid for anymass ratio. This yields a resummed representation of the absorbed flux for ageneric, circularized, nonspinning black-hole binary. Our result adds newinformation to the state-of-the-art calculation of the absorbed flux atfractional 5 post-Newtonian order [S. Taylor and E. Poisson, Phys. Rev. D {\bf78} 084016 (2008)], that is recovered in the weak-field limit approximation byconstruction.

Horizon-absorbed energy flux in circularized, nonspinning black-hole binaries and its effective-one-body representation