Search for Quantum spacetime in Black Hole QNM spectrum and Gamma Ray Bursts

Project funded by Croatian Science Foundation (HRZZ) (Research Projects), grant IP-2020-02-9614. Participating organisations named by the source: Ruđer Bošković Institute. Funded amount: EUR 124,627, as stated by the source. Runs 2021-03-01 to 2025-02-28. Keywords: black hole quasinormal modes, noncommutative geometry and gravity, gamma ray bursts, modified dispersion relations, curved momentum space. Source: OpenAIRE Graph, from the funder's project data (collected by OpenAIRE on 2026-07-23); national funding data, not CORDIS. Abstract given by the source: Black holes (BH) are predicted by the theory of general relativity as the result of a gravitational collapse of massive astrophysical objects. Among other interesting properties of black holes is a property that they exist in a state of constant arousal. Indeed, realistic black holes can never be fully described by their basic parameters, as they are always in a state of perturbation.Black hole perturbation is followed by a ringdown phase which is dominated by quasinormal modes (QNM). These modes may provide key signature of the gravitational waves. During the ringdown phase, black holes gradually relax from the initial perturbation by emitting gravitational waves and Hawking radiation. Notably, the presence of a deformed spacetime structure may distort this signal. In order to account for such effects, in this project we plan to utilise the methods of noncommutative geometry (NC) in order to construct and devise appropriate physical models which would be able to deal with new circumstances.The aim of this project is to invetigate the scalar, Dirac, vector and gravitational QNMs resulting from perturbations of realistic 4-dimensional black holes in a presence of quantized spacetime. In other words, we plan to undertake a search for footprints of spacetime noncommutativity, as encoded in the spectra of gravitational and Hawking radiation that both have a source in perturbations of realistic 4-dimensional black holes. Moreover, the same setting of NC geometry we plan to apply in studying the impact of deformation of both the symmetry and the dispersion relations on a propagation of high energy gamma rays resulting from distant gamma ray bursts.

Original source.

Source: OpenAIRE Graph: projects of national funders, OpenAIRE, from the project data of Croatian Science Foundation (HRZZ). Retrieved 2026-10-28. Licence: Creative Commons Attribution 4.0 (OpenAIRE Graph). Selected metadata, adapted presentation; the publisher's record is authoritative. No endorsement by the source is implied. Licence: Creative Commons Attribution 4.0 (CC BY 4.0).

AI-assisted summary: The project "Search for Quantum spacetime in Black Hole QNM spectrum and Gamma Ray Bursts" is funded by the Croatian Science Foundation with a grant of EUR 124,627, running from March 1, 2021, to February 28, 2025, involving the Ruđer Bošković Institute. Suggested technology pillar: simulation. Generated by AI from the public source text; it may contain errors and the original source is authoritative.