Wave optics lensing of gravitational waves in LISA-band triple systems

One of the major predictions of Einstein’s general relativity is gravitational lensing, the deflection or amplification of light by mass distributions. In my talk, I focus on gravitational wave lensing in wave optics (very long wavelength), as opposed to the standard geometric optics. I show how a supermassive black hole acts as a wave optics lens, for triple systems in in the regime of the LISA mission.

Black Hole Spectroscopy: from a mathematical problem to an observational reality

Dark compact objects are nowadays routinely observed through multiple experimental schemes. Measurements of their vibrational spectra offer unprecedented opportunities to investigate the highly dynamical regime of General Relativity, search for signs of new physics, and increase the evidence for their "black hole nature".

Searches for long-duration transient signals in ground-based gravitational-wave detectors

Over the past 8 years, Advanced LIGO and Advanced Virgo have detected about 90 gravitational-wave (GW) events, all of them produced by the coalescence of a compact binary system (CBC). In addition to CBCs, new types of GW signals are expected to be observed in the near future, as the sensitivity and observing time of GW detectors increase. Among them, we refer to long-duration transients as GW signals whose duration in the frequency band of the detectors ranges from few seconds to hours.

Galaxies, binaries and gravitational waves

We are now routinely detecting gravitational waves (GW) emitted by
merging black holes and neutron stars. Those are the afterlives of
massive stars that formed all across the Universe - at different times
and with different metallicities.
Birth metallicity plays an important role in the evolution of massive
Consequently, the population properties of mergers are sensitive to the
metallicity dependent cosmic star formation history (fSFR(Z,z)).


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