Field level inference for LSS and CMB
Uros Seljak
13 - 24 of 17806 Results
Format results
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Field-Level Inference of Primordial Non-Gaussianity
Hugo Simon - CEA Paris-Saclay
Coverage is not enough: What SBI posteriors of f_NL are actually telling you
Toka Alokda - Argelander Institute for Astronomy, University of Bonn
Field-level inference of the Local Group and its surrounding mass distribution
Ewoud Wempe - CNRS / LIRA, Observatoire de Paris
Measuring the polarization content of gravitational waves with LIGO
I will give a brief overview of LIGO’s efforts to test general relativity with gravitational waves. My main focus will be on tests of alternative polarizations.
Testing pseudo-complex general relativity with gravitational waves
Ofek Birnholtz - Rochester Institute of Technology
We show how the model of pseudo-complex general relativity can be tested using gravitational wave signals from coalescing compact objects. The Model, which agrees with Einstein gravity in the weak-field limit, diverges dramatically in the near-horizon regime, with certain parameter ranges excluding…
Inspiral Tests of Strong-field Gravity and Ringdown Tests of Quantum Black Holes
Kent Yagi - University of Virginia
The binary black hole merger events recently discovered by the LIGO and Virgo Collaboration offer us excellent testbeds for exploring extreme (strong and dynamical-field) gravity that was previously inaccessible. In this talk, I will first explain the current status of probing fundamental pillars of…
Operational General Relativity - Lecture 4
Lucien Hardy - Perimeter Institute for Theoretical Physics
An alternative significance estimation for the evidence for echoes
Alex Nielsen - Albert Einstein Institute
The noise dominated nature of the gravitational wave detectors requires an assessment of the noise background in the search for astrophysical signals. Starting with a frequentist approach, the original analysis used about 16 seconds of data after the merger signal to find how frequently random noise…
PSI 2017/2018 - Condensed Matter - Lecture 3
Rakesh Tiwari - McGill University - Department of Physics
Bravais lattices, reciprocal lattices, electrons in a periodic potential, Bloch's theorem
A model-independent search for gravitational-wave echoes
Archisman Ghosh - Institucio Catalana de Recerca I Estudis Avancats (ICREA) - Universitat de Barcelona
Exotic compact objects (e.g. boson stars, dark matter stars, gravastars), and certain quantum modifications to black holes (e.g. firewalls) are speculated to give out ``echoes'' or bursts of radiation appearing at regular time intervals due to a perturbation by any infalling matter or field. In…
Improvements on the methods for searching echoes
Julian Westerweck - Albert Einstein Institute
The recent detections of merging black holes allow for observational tests of the nature of these objects, such as searching for the GW echo signals proposed in some models. Tentative evidence for these was presented, found in an analysis based upon methods for GW data analysis as demonstrated on…
Echoes from the Abyss: Tentative Evidence for Planck-Scale Structure at Black Hole Horizons
Jahed Abedi - University of Stavanger (UiS)
In classical General Relativity (GR), an observer falling into an astrophysical black hole is not expected to experience anything dramatic as she crosses the event horizon. However, tentative resolutions to problems in quantum gravity, such as the cosmological constant problem, or the black hole…
Quantifying the evidence for black holes with GW and EM probes
Paolo Pani - Instituto Superior Tecnico - Departamento de Física