Searching gravitational wave echoes in the post-merger phase after a binary black hole coalescences.

1 Sep 2021, 17:10
Talk in parallel session Gravitational Waves Discussion Panel Gravitational Waves 2


Andrea Miani (Virgo, cWB Trento-Padova group)


Current gravitational wave (GW) surveys of binary black hole (BBH) mergers provide unprecedented probes of the dynamics in extreme gravitational fields and relativistic velocities.
It has been proposed that such compact objects may display exotic characteristics and could produce repeated GW pulses of widely uncertain morphology (echoes) in the post-merger phase. A detection of echoes would be a smoking gun on the existence of exotic compact objects (ECOs) and would shed light on their nature and their constituents.
We will present a method to search for echoes that is agnostic to the properties of the GW pulses and it is based on a targeted version of coherentWaveBurst (cWB), the unmodelled GW transient search algorithm, developed in the LIGO Scientific Collaboration (LSC) and Virgo Collaboration and widely used on LIGO-Virgo-KAGRA data.
We will discuss the results of this search on LIGO-Virgo open data and provide new upper limits in terms of the detectable energy of echo-like signals. We will present some constraints that these observations set on the parameters space of ECOs' models.

Primary authors

Andrea Miani (Virgo, cWB Trento-Padova group) Claudia Lazzaro (Università degli Studi di Padova) Prof. Giovanni Prodi (Univ of Trento and INFN Trento) Dr. Gabriele Vedovato (INFN Padova) Dr. Marco Drago (Univ of Rome La Sapienza and INFN Rome) Dr. Shubhanshu Tiwari (Univ of Zurich) Dr. Francesco Salemi (Univ of Trento and INFN Trento) Prof. Edoardo Milotti (Univ of Trieste and INFN Trieste) Prof. Sergei Klimenko (Univ of Florida) sophie bini (università di Trento)

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