GWPAW 2017

Session

Testing GR

Jun 1, 2017, 8:45 AM

Impérial Palace

9. Testing gravity with binary black hole coalescences: results and prospects

Dr Walter Del Pozzo (Universitá di Pisa)

6/1/17, 8:45 AM

Invited talk

Gravitational waves from the coalescence of compact binary systems carry a wealth of information about the merging objects, the remnant object as well as their interaction with space-time. During the coalescence of extremely compact objects such as binary black holes, the typical curvature and velocity at play are such that, from the observation of the gravitational wave signal, we can access...

58. Echoes from the Abyss: Evidence for Planck-scale structure at black hole horizons

Mr Jahed Abedi (Sharif University of Technology)

6/1/17, 9:20 AM

Invited talk

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 information paradox, invoke significant departures from classicality in the vicinity of the...

33. Analysing gravitational wave data for black hole echoes

Dr Alex Nielsen (MPI for Gravitational Phys)

6/1/17, 9:35 AM

Invited talk

We discuss the methods of data analysis and significance estimation used to search for black hole echoes. We conclude that current results do not provide sufficient observational evidence for claiming the existence of Planck-scale structure at black hole horizons and we suggest further techniques that could be used to explore this interesting possibility.

74. Questions for the two previous talks

Dr Alex Nielsen (MPI for Gravitational Phys), Mr Jahed Abedi (Sharif University of Technology)

6/1/17, 9:50 AM

55. Ringdown and echoes as probes of strong-field dynamics of general relativity

Dr Archisman Ghosh (Nikhef)

6/1/17, 10:05 AM

Contributed talk

The detections of the presumed binary black hole coalescences in the first observing run of Advanced LIGO have allowed us to probe the genuinely strong-field dynamics of Einstein's general theory of relativity for the first time, and put tight constraints on the inspiral-merger-ringdown dynamics of the binary coalescence process. Subsequent detections are expected to be able to more directly...

4. Constraining Lorentz violations using gravitational wave observations

Ms Anuradha Samajdar (Indian Institute of Science Education and Research Kolkata), Dr Chris Van Den Broeck (National Institute for Subatomic Physics)

6/1/17, 10:20 AM

Contributed talk

Local Lorentz invariance is a cornerstone of general relativity (GR). The direct detection of gravitational waves (GWs) enables unique tests for possible violations of Lorentz invariance in the gravitational sector. Propagation effects of GWs in Lorentz violating theories of gravity lead to modified dispersion relations and dephasing of GWs with respect to the GR waveform. These may be...