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The physics of compact objects in general relativity.
The study of compact objects in the strong field regime needs a thorough understanding of the initial value problem in general relativity at the resence of hydrodynamical or magnetohydrodynamical sources...
Jun 25, 2020
Stars stripped in binaries: from cosmic reionization to gravitational waves
Most massive stars spend their lives in so close orbit with a companion star that severe mass exchange or even coalescence is inevitable as the stars evolve and swell. A...
Sep 10, 2020
The formation and growth of supermassive black holes
Quasars are the most luminous objects in the universe powered by accretion onto supermassive black holes (SMBHs). They can be observed at the earliest cosmic epochs, providing unique insights into...
Sep 17, 2020
Diophantine approximation as Cosmic Censor for AdS black holes
The statement that general relativity is deterministic finds its mathematical formulation in the celebrated ‘Strong Cosmic Censorship Conjecture’ due to Roger Penrose. I will present my recent results on this...
Sep 24, 2020
How does a dark compact object ringdown?
Gravitational waves from the coalescence of compact binaries provide a unique opportunity to test gravity in strong field regime. In particular, the postmerger phase of the gravitational signal is a...
Oct 01, 2020
Astrophysical backgrounds of gravitational waves: an overview
The astrophysical background of gravitational waves (AGWB) is composed by the incoherent superposition of gravitational wave signals emitted by resolved and unresolved astrophysical sources from the onset of stellar activity...
Oct 08, 2020
Nuclear Physics Uncertainties and Kilonovae
The observation—in light and gravitational waves—of the first neutron star merger, GW170817, provided an amazingly detailed view of these systems. Among the many successes from this single event was the...
Oct 15, 2020
Extreme-mass-ratio inspirals: Waveform models and signal space
Extreme-mass-ratio inspirals (EMRIs) are the only gravitational-wave sources for the future LISA detector that combine the issue of strong-field complexity with that of long-lived signals. The result is a profoundly...
Oct 22, 2020
Moving Closer to a Detection of nHz-frequency Gravitational Waves with NANOGrav
Millisecond Pulsars (MSPs) have become reliable and extremely stable workhorses of modern astronomy and physics. The North American Nanohertz Observatory for Gravitational Waves, or NANOGrav, has been observing growing numbers...
Oct 29, 2020
GW190521 may be an intermediate mass ratio inspiral
Abstract and Zoom Link: TBD
Nov 05, 2020