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117 papers · 1 filter
Comparison between numerical relativity and a new class of post-Newtonian gravitational-wave phase evolutions: the non-spinning equal-mass case
Achamveedu Gopakumar, Mark Hannam, Sascha Husa +1
We compare the phase evolution of equal-mass nonspinning black-hole binaries from numerical relativity (NR) simulations with post-Newtonian (PN) results obtained from three PN appr…
Cylindrical spacetimes with a cosmological constant and their sources
M. Zofka, J. Bicak
We review and investigate some basic properties of static, cylindrically symmetric spacetimes with non-zero cosmological constant, find non-singular sheet sources of these spacetim…
The cross-correlation search for periodic gravitational waves
Sanjeev Dhurandhar, Badri Krishnan, Himan Mukhopadhyay +1
In this paper we study the use of cross-correlations between multiple gravitational wave (GW) data streams for detecting long-lived periodic signals. Cross-correlation searches bet…
Fundamental properties and applications of quasi-local black hole horizons
Badri Krishnan
The traditional description of black holes in terms of event horizons is inadequate for many physical applications, especially when studying black holes in non-stationary spacetime…
Hyperboloidal foliations and scri-fixing
Anıl Zenginoğlu
We discuss a gauge choice which allows us to avoid the introduction of artificial timelike outer boundaries in numerical studies of test fields based on a 3+1 decomposition of asym…
Comparison between numerical-relativity and post-Newtonian waveforms from spinning binaries: the orbital hang-up case
Mark Hannam, Sascha Husa, Bernd Brügmann +1
We compare results from numerical simulations of spinning binaries in the "orbital hangup" case, where the binary completes at least nine orbits before merger, with post-Newtonian…