A5075070168- Pulsars and Gravitational Waves Research
- Black Holes and Theoretical Physics
- Astrophysical Phenomena and Observations
- Gamma-ray bursts and supernovae
- Cosmology and Gravitation Theories
- Geophysics and Sensor Technology
- Relativity and Gravitational Theory
- Geophysics and Gravity Measurements
- Seismic Imaging and Inversion Techniques
- Computational Physics and Python Applications
- Monetary Policy and Economic Impact
- GNSS positioning and interference
- Seismic Waves and Analysis
- Stellar, planetary, and galactic studies
- Galaxies: Formation, Evolution, Phenomena
University College Dublin
2023-2025
Istituto Nazionale di Fisica Nucleare, Sezione di Roma I
2020-2023
Laboratoire des 2 Infinis Toulouse
2023
Sapienza University of Rome
2020-2023
Osservatorio astronomico di Bologna
2019
University of Bologna
2019
We investigate the impact of postadiabatic (1PA) terms on parameter estimation for extreme and intermediate mass-ratio inspirals using state-of-the-art waveform models. Our analysis is first to employ Bayesian inference assess systematic errors 1PA waveforms. find that neglecting introduces significant biases (small) mass ratio $\ensuremath{\epsilon}\ensuremath{\gtrsim}{10}^{\ensuremath{-}5}$ quasi circular orbits in Schwarzschild spacetime, which can be mitigated with resummed 3PN...
Rapidly rotating bodies moving in curved space-time experience the so-called spin-curvature force, which becomes important for motion of compact objects gravitational-wave inspirals. As a first approximation, this effect is captured spinning test particle. We solve equations particle to leading order spin arbitrary static and spherically symmetric space-times terms one-dimensional closed-form integrals. This solves problem proves its integrability wide range modified gravities near exotic...
Extreme-mass-ratio inspirals (EMRIs) detectable by the future Laser Interferometer Space Antenna provide a unique way to test general relativity and fundamental physics. Motivated this possibility, here we study in detail EMRI dynamics presence of spinning secondary, collecting extending various results that appeared previous work also providing useful intermediate steps new relations for first time. We present frequency-domain code computes gravitational-wave fluxes adiabatic orbital...
Extreme mass-ratio inspirals (EMRIs) detectable by the Laser Inteferometric Space Antenna (LISA) are unique probes of astrophysics and fundamental physics. Parameter estimation for these sources is challenging, especially because waveforms long, complicated, known only numerically, slow to compute in most relevant regime, where dynamics relativistic. We perform a time-consuming Fisher-matrix error analysis EMRI parameters using fully relativistic numerical leading order an adiabatic...
We estimate the accuracy in measurement of tidal Love number a supermassive compact object through detection an extreme mass ratio inspiral~(EMRI) by future LISA mission. A nonzero would be smoking gun for departures from classical black hole prediction General Relativity. find that EMRI could set constraints on spinning central with dimensionless spin $\hat a=0.9$ ($\hat a=0.99$) which are approximately four (six) orders magnitude more stringent than what achievable current ground-based...
An outstanding prediction of general relativity is the fact that angular momentum $S$ an isolated black hole with mass $\mu$ limited by Kerr bound, $S\leq G\mu^2/c$. Testing this cornerstone challenging due to difficulty in modelling spinning compact objects violate bound. We argue precise, model-independent tests can be achieved measuring gravitational waves from extreme ratio inspiral around a supermassive object, one main targets future LISA mission. In limit, dynamics small object...
We study perturbative reheating at the end of fibre inflation where inflaton is a closed string modulus with Starobinsky-like potential. first derive spectral index ns and tensor-to-scalar ratio r as function number efoldings parameter R which controls slow-roll breaking corrections. then compute couplings decay rates into ultra-light bulk axions visible sector fields on D7-branes wrapping divisor. This leads to temperature order 1010 GeV requires 52 efoldings. Ultra-light contribute dark...
We investigate the impact of post-adiabatic (1PA) terms on parameter estimation for extreme and intermediate mass-ratio inspirals using state-of-the-art waveform models. Our analysis is first to employ Bayesian inference assess systematic errors 1PA waveforms. find that neglecting introduces significant biases (small) mass ratio $\epsilon \gtrsim 10^{-5}$ quasi circular orbits in Schwarzschild spacetime, which can be mitigated with resummed 3PN expressions at order. Moreover, we show...
Extreme mass ratio inspirals (EMRIs) are among the key sources of gravitational waves for LISA space-based wave detector. Achieving sufficient accuracy in template these binaries requires modeling effects spin comparably light secondary compact object. In this work, we employ solution Hamilton-Jacobi equation motion spinning bodies Kerr space-time to obtain their generic orbits. Then, using Teukolsky formalism compute energy and angular momentum fluxes sourced by orbits valid linear order...
Rapidly rotating bodies moving in curved space-time experience the so-called spin-curvature force, which becomes important for motion of compact objects gravitational-wave inspirals. As a first approximation, this effect is captured spinning test particle. We solve equations particle to leading order spin arbitrary static and spherically symmetric space-times terms one-dimensional closed-form integrals. This solves problem proves its integrability wide range modified gravities near exotic...
We estimate the accuracy in measurement of tidal Love number a supermassive compact object through detection an extreme mass ratio inspiral~(EMRI) by future LISA mission. A nonzero would be smoking gun for departures from classical black hole prediction General Relativity. find that EMRI could set constraints on spinning central with dimensionless spin $\hat a=0.9$ ($\hat a=0.99$) which are approximately four (six) orders magnitude more stringent than what achievable current ground-based...