Gravitational footprints of black holes and their microstate geometries

Abstract We construct a family of non-supersymmetric extremal black holes and their horizonless microstate geometries in four dimensions. The black holes can have finite angular momentum and an arbitrary charge-to-mass ratio, unlike their supersymmetric cousins. These features make them and their mi...

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Main Authors: Ibrahima Bah, Iosif Bena, Pierre Heidmann, Yixuan Li, Daniel R. Mayerson
Format: Article
Language:English
Published: SpringerOpen 2021-10-01
Series:Journal of High Energy Physics
Subjects:
Online Access:https://doi.org/10.1007/JHEP10(2021)138
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author Ibrahima Bah
Iosif Bena
Pierre Heidmann
Yixuan Li
Daniel R. Mayerson
author_facet Ibrahima Bah
Iosif Bena
Pierre Heidmann
Yixuan Li
Daniel R. Mayerson
author_sort Ibrahima Bah
collection DOAJ
description Abstract We construct a family of non-supersymmetric extremal black holes and their horizonless microstate geometries in four dimensions. The black holes can have finite angular momentum and an arbitrary charge-to-mass ratio, unlike their supersymmetric cousins. These features make them and their microstate geometries astrophysically relevant. Thus, they provide interesting prototypes to study deviations from Kerr solutions caused by new horizon-scale physics. In this paper, we compute the gravitational multipole structure of these solutions and compare them to Kerr black holes. The multipoles of the black hole differ significantly from Kerr as they depend non-trivially on the charge-to-mass ratio. The horizonless microstate geometries (that are comparable in size to a black hole) have a similar multipole structure as their corresponding black hole, with deviations to the black hole multipole values set by the scale of their microstructure.
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spelling doaj.art-02c41cdd13f04c6ea0d4a87583498cc42022-12-21T19:11:21ZengSpringerOpenJournal of High Energy Physics1029-84792021-10-0120211014910.1007/JHEP10(2021)138Gravitational footprints of black holes and their microstate geometriesIbrahima Bah0Iosif Bena1Pierre Heidmann2Yixuan Li3Daniel R. Mayerson4Department of Physics and Astronomy, Johns Hopkins UniversityInstitut de Physique Théorique, Université Paris Saclay, CEA, CNRSDepartment of Physics and Astronomy, Johns Hopkins UniversityInstitut de Physique Théorique, Université Paris Saclay, CEA, CNRSInstitut de Physique Théorique, Université Paris Saclay, CEA, CNRSAbstract We construct a family of non-supersymmetric extremal black holes and their horizonless microstate geometries in four dimensions. The black holes can have finite angular momentum and an arbitrary charge-to-mass ratio, unlike their supersymmetric cousins. These features make them and their microstate geometries astrophysically relevant. Thus, they provide interesting prototypes to study deviations from Kerr solutions caused by new horizon-scale physics. In this paper, we compute the gravitational multipole structure of these solutions and compare them to Kerr black holes. The multipoles of the black hole differ significantly from Kerr as they depend non-trivially on the charge-to-mass ratio. The horizonless microstate geometries (that are comparable in size to a black hole) have a similar multipole structure as their corresponding black hole, with deviations to the black hole multipole values set by the scale of their microstructure.https://doi.org/10.1007/JHEP10(2021)138Black Holes in String TheoryBlack Holes
spellingShingle Ibrahima Bah
Iosif Bena
Pierre Heidmann
Yixuan Li
Daniel R. Mayerson
Gravitational footprints of black holes and their microstate geometries
Journal of High Energy Physics
Black Holes in String Theory
Black Holes
title Gravitational footprints of black holes and their microstate geometries
title_full Gravitational footprints of black holes and their microstate geometries
title_fullStr Gravitational footprints of black holes and their microstate geometries
title_full_unstemmed Gravitational footprints of black holes and their microstate geometries
title_short Gravitational footprints of black holes and their microstate geometries
title_sort gravitational footprints of black holes and their microstate geometries
topic Black Holes in String Theory
Black Holes
url https://doi.org/10.1007/JHEP10(2021)138
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