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Search for Continuous Gravitational Waves from Scorpius X-1 in LIGO O2 Data
Yuanhao Zhang, Maria Alessandra Papa, Badri Krishnan +1
We present the results of a search in LIGO O2 public data for continuous gravitational waves from the neutron star in the low-mass X-ray binary Scorpius X-1. We search for signals…
Quasinormal modes and their overtones at the common horizon in a binary black hole merger
Pierre Mourier, Xisco Jiménez Forteza, Daniel Pook-Kolb +2
It is expected that all astrophysical black holes in equilibrium are well described by the Kerr solution. Moreover, any black hole far away from equilibrium, such as one initially…
Inferring the gravitational wave memory for binary coalescence events
Neev Khera, Badri Krishnan, Abhay Ashtekar +1
Full, non-linear general relativity predicts a memory effect for gravitational waves. For compact binary coalescence, the total gravitational memory serves as an inferred observabl…
Horizons in a binary black hole merger II: Fluxes, multipole moments and stability
Daniel Pook-Kolb, Ofek Birnholtz, Jose Luis Jaramillo +2
We study in detail the dynamics and stability of marginally trapped surfaces during a binary black hole merger. This is the second in a two-part study. The first part studied the b…
Horizons in a binary black hole merger I: Geometry and area increase
Daniel Pook-Kolb, Ofek Birnholtz, Jose Luis Jaramillo +2
Recent advances in numerical relativity have revealed how marginally trapped surfaces behave when black holes merge. It is now known that interesting topological features emerge du…
News from horizons in binary black hole mergers
Vaishak Prasad, Anshu Gupta, Sukanta Bose +2
In a binary black hole merger, it is known that the inspiral portion of the waveform corresponds to two distinct horizons orbiting each other, and the merger and ringdown signals c…