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Rachel Gray02/05/2023, 09:00
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Golam Mohiuddin Shaifullah02/05/2023, 09:35
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Tessa Baker02/05/2023, 10:10
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Jose Maria Ezquiaga Bravo02/05/2023, 11:15
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Chiara Caprini (Universite de Geneve (CH))02/05/2023, 11:50
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Michele Mancarella (University of Milan-Bicocca)02/05/2023, 14:00
The science cases of third generation (3G) ground-based gravitational-wave observatories are making significant advancements, both in Europe with the Einstein Telescope, and in the US with the Cosmic Explorer. In this context, a crucial task is to deliver robust predictions for their detection rates and parameter estimation capabilities. I will present gwfast, a novel, open-source Fisher...
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Danny LAGHI02/05/2023, 14:20
In this talk, we consider the problem of measuring the flat-LCDM parameters using binary black hole coalescences observed by third-generation (3G) gravitational-wave detectors like the Einstein Telescope and Cosmic Explorer. Using simulated dark sirens together with redshift information from a realistic simulated galaxy catalog, we adopt a Bayesian framework to jointly estimate the Hubble...
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Adrien KUNTZ (Scuola Normale Superiore, Pisa)02/05/2023, 14:40
The future spatial interferometer LISA will probably detect a few inspirals from binary black holes (BBH) located in the vicinity of a giant supermassive black hole (SMBH). The latter leaves its imprint on the waveform via several relativistic three-body effects. I will show that by including in the waveform Doppler terms up to quadratic order in the velocity of the center-of-mass of the BBH,...
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Alberto Mangiagli02/05/2023, 15:00
In ~2034 the Laser Interferometer Space Antenna (LISA) will detect the coalescence of massive black hole binaries (MBHBs) from $10^5$ to $10^7 \rm M_{\odot}$ up to z$\sim$20. The gravitational wave (GWs) signal is expected to be accompanied by a powerful electromagnetic (EM) counterpart, from radio to X-ray, generated by the gas accreting on the binary.
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GWs are standard sirens (StSis) since... -
Chang Liu (L2IT / PKU)02/05/2023, 15:20
Extreme mass-ratio inspirals (EMRIs) are systems consisting of a massive black hole and a stellar-mass compact object. These systems are one of the gravitational-wave (GW) sources that will be detected by the Laser Interferometer Space Antenna (LISA). By using dark sirens with galaxy catalogs, EMRIs detected by LISA have the potential to place stringent constraints on cosmological parameters ...
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Dr Daniela Doneva (University of Tuebingen)02/05/2023, 15:40
Gravitational waves are among the ultimate tools to test fundamental
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physics. The degeneracies between different effects are a serious obstacle, though, to fulfilling this goal since modified gravity often leads to smaller cumulative changes. In the present talk we will focus on some interesting new effects we can observe in the gravitational wave spectrum that differ qualitatively from the... -
Anna Tokareva (Imperial College London)02/05/2023, 16:30
Gravity can be embedded into a renormalizable theory by means of adding quadratic in curvature terms. However, this at first leads to the presence of the Weyl ghost. It is possible to get rid of this ghost if the locality assumption is weakened and the propagator of the graviton is represented by an entire function of the d'Alembertian operator without new poles and zeros. Models of this type...
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Dr Alberto Roper Pol (Universite de Geneve (CH))02/05/2023, 16:50
The stochastic gravitational wave background (SGWB) produced at the electroweak phase transition is expected to be peaking within LISA's sensitivity frequency range, being a promising test of high energy physics and beyond Standard Model extensions. The contribution of magnetohydrodynamic (MHD) turbulence to the cosmological SGWB is one of the least understood sources due to the necessity, in...
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Anna Kormu02/05/2023, 17:10
In the Standard Model the electroweak phase transition is a crossover, but in many beyond the Standard Model theories the transition is of first order. Strong first order PTs could produce gravitational waves that might be detectable by the Laser Interferometer Space Antenna (LISA). Perturbation theory is commonly used to estimate the parameters that enter the calculation of gravitational wave...
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Deanna Hooper02/05/2023, 17:30
A gravitational wave background from a first order phase transition at the electroweak scale may be observable with future detectors such as LISA. While the Standard Model does not predict a first order phase transition, these occur in many BSM scenarios. Therefore, detecting a stochastic gravitational wave background could point to new physics, while a null detection could constrain or even...
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Giulia Capurri (SISSA)02/05/2023, 17:50
The anisotropies of the astrophysical stochastic gravitational-wave background (SGWB) encode an extraordinary amount of cosmological information, as they are a new unexplored tracer of the Large-Scale Structure. On the other hand, many recent studies have pointed out the difficulties of measuring these spatial fluctuations, even with a network of next-generation detectors, such as the Einstein...
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Jishnu Suresh (Université catholique de Louvain)02/05/2023, 18:10
As of today, the Advanced LIGO and Virgo gravitational-wave (GW) detectors have cataloged nearly 100 GW detections from various compact object mergers. These discoveries began the endeavors to search for other kinds of GW sources. Among these, the Stochastic Gravitational-Wave Background (SGWB), arising as the superposition of individually undetectable cosmological and/or astrophysical...
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