Gravitational wave signatures of exotic compact objects Elisa - PowerPoint PPT Presentation

Cortona Young 27-29 May 2020 Gravitational wave signatures of exotic compact objects Elisa Maggio Sapienza University of Rome

Outline • Gravitational waves as probes of strong gravity • Exotic compact objects • Ergoregion instability • Gravitational wave echoes Elisa Maggio - Exotic Compact Objects Cortona Young 2020 1/14

Compact binary coalescence On September 14 th 2015 the first gravitational wave from a compact binary merger was detected. Three stages: • Inspiral • Merger • Ringdown LVC, PRL 116 (2016) 061102 Elisa Maggio - Exotic Compact Objects Cortona Young 2020 2/14

Compact binary coalescence On September 14 th 2015 the first gravitational wave from a compact binary merger was detected. Three stages: • Inspiral • Merger • Ringdown LVC, PRL 116 (2016) 061102 Elisa Maggio - Exotic Compact Objects Cortona Young 2020 2/14

<latexit sha1_base64="KLSE7N8QNL2KVJhxi9q4z4Y0lzU=">ACDXicbVC7SgNREJ2N72g0aiU2F4MgCGHXxjRCwEY7FWMCSQizN5N4yd0H984KIYif4FfYamUnFjZ+g4X/4uZRaOJp5nDODNz/Fgry675WTm5hcWl5ZXsqtrufWN/ObWjY0SI6kiIx2Zmo+WtAqpwo1WJDGPiaqn7vdOhX78hYFYX3I+pGWA3VB0lkVOpld9pRAF18WRcWleHasLOW/mCW3RHELPEm5BCOfeRCAC4aOW/G+1IJgGFLDVaW/fcmJsDNKykpvtsI7EUo+xhl+opDTEg2xyMXrgX+4lFjkRMRigtRiL9nhgYG0/8NPOAPnWTntD8T+vnCn1ByoME6YQjlcxErTaJGVRqXZkGgrQ8w4vJyECoVEg8xklEApUzFJw8qmeXjT38+Sm6Oi5xa9yzSYEoyxDLuwBwfgwTGU4QwuoAISHuAJnuHFeXRenTfnfdyacSYz2/AHzucPCE+dGQ=</latexit> <latexit sha1_base64="qy5JWYQispQAjFTjNVLHFYT5UMg=">ACDXicbVC7SgNREL0bXzEaXbUSm4shIAh18Y0QkAQ7aKYByQhzN5M4sW7D+6dFUIfoJfoaVWdmJh4zdY+C9uHoUmnmYO58wM8eLlDTkOF9WamFxaXklvZpZW89ubNpb21UTxlpgRYQq1HUPDCoZYIUkKaxHGsH3FNa829ORX7tDbWQYXFM/wpYPvUB2pQBKpLa92wx97MHJpLSvDuWUXbTtnFNwxuDzxJ2SXCn7EefPMk/ltv3d7IQi9jEgocCYhutE1BqAJikUDjPN2GAE4hZ62EhoAD6a1mD8wpDnYwMU8g1l4qPRfw9MQDfmL7vJZ0+0I2Z9Ubif14jpm6xNZBFBMGYrSIpMLxIiO0TLJB3pEaiWB0OXIZcAEaiFBLDkIkYpyElUnycGe/nyfVo4LrFNzLJgimyDN9tg+O2AuO2Ylds7KrMIEu2eP7Jm9WA/Wq/VmvU9aU9Z0Zof9gfX5A2IjnhQ=</latexit> <latexit sha1_base64="qy5JWYQispQAjFTjNVLHFYT5UMg=">ACDXicbVC7SgNREL0bXzEaXbUSm4shIAh18Y0QkAQ7aKYByQhzN5M4sW7D+6dFUIfoJfoaVWdmJh4zdY+C9uHoUmnmYO58wM8eLlDTkOF9WamFxaXklvZpZW89ubNpb21UTxlpgRYQq1HUPDCoZYIUkKaxHGsH3FNa829ORX7tDbWQYXFM/wpYPvUB2pQBKpLa92wx97MHJpLSvDuWUXbTtnFNwxuDzxJ2SXCn7EefPMk/ltv3d7IQi9jEgocCYhutE1BqAJikUDjPN2GAE4hZ62EhoAD6a1mD8wpDnYwMU8g1l4qPRfw9MQDfmL7vJZ0+0I2Z9Ubif14jpm6xNZBFBMGYrSIpMLxIiO0TLJB3pEaiWB0OXIZcAEaiFBLDkIkYpyElUnycGe/nyfVo4LrFNzLJgimyDN9tg+O2AuO2Ylds7KrMIEu2eP7Jm9WA/Wq/VmvU9aU9Z0Zof9gfX5A2IjnhQ=</latexit> <latexit sha1_base64="56IhsiA5qXnC3T/KyeCqJeHruo0=">ACDXicbVC7SgNREL0bXzG+Vq3E5mIQBCHs2phGCNhoF8U8IFnC7M0kXnL3wb2zQgjBT/ArbLWyE1u/wcJ/cZNsoYmnmcM5M8zM8WMlDTnOl5VbWl5ZXcuvFzY2t7Z37N29uokSLbAmIhXpg8GlQyxRpIUNmONEPgKG/7gcuI3HlAbGYV3NIzRC6Afyp4UQKnUsQ/aUYB9uJiVzu2pzNh1xy46JWcKvkjcjBRZhmrH/m53I5EGJQYEzLdWLyRqBJCoXjQjsxGIMYQB9bKQ0hQONpi+M+XFigCIeo+ZS8amIvydGEBgzDPy0MwC6N/PeRPzPayXUK3sjGcYJYSgmi0gqnC4yQs0G+RdqZEIJpcjlyEXoIEIteQgRComaViFNA93/vtFUj8ruU7JvXGKlXKWTJ4dsiN2wlx2zirsilVZjQn2yJ7ZC3u1nqw36936mLXmrGxmn/2B9fkDvpabdQ=</latexit> <latexit sha1_base64="nZG80oPsTJ28hf7UoIDIFMmNIY=">ACHXicbVDLahtBEOxVHlaUlxIfcxksAskhYtcEoktA4EtykyF6gFYsvaOWMmhmd5npDRbLgv/An+CvyNU+BV+MryaH/EtWj4Mjp05FVTfdVXGmlWPf/+3VHjx89Hiv/qTx9NnzFy+br14PXJpbSX2Z6tSOYnSkVUJ9VqxplFlCE2saxoujlT/8QdapNPnGy4wmBueJmimJXElR83ImEdFyHTCxRNVpbis/gwplFWQRlEaG5h9LaNmy2/7a4j7JNiSVvdj+oUAHpR8084TWVuKGp0blx4Gc8KdCykprKRpg7ylAucE7jiZoyE2KdaRSvM0dcioyskJpsRbp7kaBxrmliatJg/zd7Xor8X/eOdZ1KoJMuZErk6xErT+pCTVlVdkZgqS8y4+pyESoREi8xklUApKzGvymtUfQS76e+TwWE78NvBcVMBzaowxs4gHcQwCfowhfoQR8knMFPuIBL79z75V17N5vRmrfd2Yd/4N3+BV6zpE0=</latexit> <latexit sha1_base64="L6TeP5VTPkL1agAbTV6bhfgcKoM=">ACHXicbVC7SgNBFJ31GeMramkzKIWhl0RDIg2GgXwaiQDcvdyU0cnNldZu6Ksmxr6yf4FbaKDZiKxb+gt/gJlr4OtXhnHu595wUdKS6746A4NDwyOjpbHy+MTk1HRlZvbQxqkR2BCxis1xCBaVjLBkhQeJwZBhwqPwtOdn90hsbKODqgiwRbGrqR7EgBVEhBZcUnSIPMJzynrA06yXO+xVe53zEgMi/P/FhjF4K9PKgsulW3D/6XeF9kcXu9+ni5+X5fDypvfjsWqcaIhAJrm56bUCsDQ1IozMt+ajEBcQpdbBY0Ao2lfUj5XwptUAxT9BwqXhfxO8bGWhrL3RYTGqgE/vb64n/ec2UOrVWJqMkJYxE7xBJhf1DVhZdIW8LQ0SQe9z5DLiAgwQoZEchCjEtCivXPTh/U7/lxyuVT236u0XxdTYJ0psni2wZeaxDbNdlmdNZhgV+yG3bI759p5cJ6c58/RAedrZ479gPyAQ52pkA=</latexit> <latexit sha1_base64="L6TeP5VTPkL1agAbTV6bhfgcKoM=">ACHXicbVC7SgNBFJ31GeMramkzKIWhl0RDIg2GgXwaiQDcvdyU0cnNldZu6Ksmxr6yf4FbaKDZiKxb+gt/gJlr4OtXhnHu595wUdKS6746A4NDwyOjpbHy+MTk1HRlZvbQxqkR2BCxis1xCBaVjLBkhQeJwZBhwqPwtOdn90hsbKODqgiwRbGrqR7EgBVEhBZcUnSIPMJzynrA06yXO+xVe53zEgMi/P/FhjF4K9PKgsulW3D/6XeF9kcXu9+ni5+X5fDypvfjsWqcaIhAJrm56bUCsDQ1IozMt+ajEBcQpdbBY0Ao2lfUj5XwptUAxT9BwqXhfxO8bGWhrL3RYTGqgE/vb64n/ec2UOrVWJqMkJYxE7xBJhf1DVhZdIW8LQ0SQe9z5DLiAgwQoZEchCjEtCivXPTh/U7/lxyuVT236u0XxdTYJ0psni2wZeaxDbNdlmdNZhgV+yG3bI759p5cJ6c58/RAedrZ479gPyAQ52pkA=</latexit> <latexit sha1_base64="rLbTjnC/X+vNsMQd8nAPsSy1SdY=">ACHXicbVC7TsNAEDzDOEVoKQ5ESFBQWTkAYpEg10QSKAFEfW+rIJp9zZ1t0aEVn+Bj6Br6CFig7RIgr+BSekgMBUo5ld7c6EiZKWXPfDmZmdm19YLC2Vl1dW19YrG5uXNk6NwJaIVWyuQ7CoZIQtkqTwOjEIOlR4FQ5ORv7VLRor4+iChgl2NPQj2ZMCqJCyr5PkAaZT3hHWRd0kuf8mB9wv2dAZF6e+bHGPgRneVCpujV3DP6XeBNSZRM0g8qn341FqjEiocDatucm1MnAkBQK87KfWkxADKCP7YJGoNF2snGknO+mFijmCRouFR+L+HMjA23tUIfFpAa6sdPeSPzPa6fUq3cyGSUpYSRGh0gqHB+ywsiK+RdaZAIRp8jlxEXYIAIjeQgRCGmRXnlog9vOv1fcnlY89yad+5WG/VJMyW2zXbYHvPYEWuwU9ZkLSbYPXtkT+zZeXBenFfn7Xt0xpnsbLFfcN6/ALWsomQ=</latexit> <latexit sha1_base64="tS3NBNHapBkCjMj4rYPFVorc0U=">ACGnicbVC7TsNAEFzDOEVoKQ5EYGoIpsGiQkCigBEYIUR9b6sgknzg/drRGR5T+gpeMraKGiQ7Q0FPwLTqDgNdVoZle7M2GqlWXfXPGxicmp6YrM9XZufmFxdrS8plNMiOpKROdmPMQLWkVU5MVazpPDWEUamqFl/tDv3VFxqokPuVBSp0I+7HqKYlcSkFtoxfkPtM15wetohC7wu8ZlLmfRNTH4KTIt4SfqiKo1d2GO4L4S7wvUt9zbz0BAEdB7d3vJjKLKGap0dq256bcydGwkpqKqp9ZSlFeYp/aJY0xItvJR3kKsZ5Z5ESkZITSYiTS940cI2sHUVhORsgX9rc3FP/z2hn3djq5itOMKZbDQ6w0jQ5ZaVRZFImuMsSMw89JqFhINMhMRgmUshSzsrlq2Yf3O/1fcrbV8NyGd1wWswOfqMAqrMEmeLANe3AIR9AECTdwDw/w6Nw5T86z8/I5OuZ87azADzivHxaeomo=</latexit> <latexit sha1_base64="ahFalgpxQmo4p4K0/e0LJCpE=">ACGnicbVC7TsNAEDyHVwivACXNCQSiuw0pEFCoAyIJIgxZG1vmzCifNDd2sEsvwHtHR8BQ0SUNEhWhoKPoF/wEkogDVaGZXuzN+rKQh2363ChOTU9MzxdnS3PzC4lJ5eaVpokQLbIhIRfrUB4NKhtgSQpPY40Q+Apb/vn+wG9doDYyCk/oKsZOAP1Q9qQAyiWvNXzUpfwktKDVpbxXe72NIjUjQLsg3ecpVXuxjLzyht2xR6CjxPnm2zs2TfO+v3DZ90rf7jdSCQBhiQUGN27Jg6KWiSQmFWchODMYhz6GM7pyEaDrpME/GNxMDFPEYNZeKD0X8uZFCYMxV4OeTAdCZ+esNxP+8dkK9WieVYZwQhmJwiKTC4SEjtMyLQt6VGolg8DlyGXIBGohQSw5C5GKSN1fK+3D+ph8nzWrFsSvOUV5MjY1QZGtsnW0zh+2wPXbI6qzBLtmd+yRPVm31rP1Yr2ORgvW984q+wXr7Qtc+aTK</latexit> <latexit sha1_base64="ahFalgpxQmo4p4K0/e0LJCpE=">ACGnicbVC7TsNAEDyHVwivACXNCQSiuw0pEFCoAyIJIgxZG1vmzCifNDd2sEsvwHtHR8BQ0SUNEhWhoKPoF/wEkogDVaGZXuzN+rKQh2363ChOTU9MzxdnS3PzC4lJ5eaVpokQLbIhIRfrUB4NKhtgSQpPY40Q+Apb/vn+wG9doDYyCk/oKsZOAP1Q9qQAyiWvNXzUpfwktKDVpbxXe72NIjUjQLsg3ecpVXuxjLzyht2xR6CjxPnm2zs2TfO+v3DZ90rf7jdSCQBhiQUGN27Jg6KWiSQmFWchODMYhz6GM7pyEaDrpME/GNxMDFPEYNZeKD0X8uZFCYMxV4OeTAdCZ+esNxP+8dkK9WieVYZwQhmJwiKTC4SEjtMyLQt6VGolg8DlyGXIBGohQSw5C5GKSN1fK+3D+ph8nzWrFsSvOUV5MjY1QZGtsnW0zh+2wPXbI6qzBLtmd+yRPVm31rP1Yr2ORgvW984q+wXr7Qtc+aTK</latexit> <latexit sha1_base64="b2+BsI/a4UP1mV4BdqgtXKMExlw=">ACGnicbVC7TsNAEDyHVwivACXNiQhEFdlpSIMUiQLKgMhDiNrfdmE+eH7taIyPIf8Al8BS1UdIiWhoJ/wQkpgDVaGZXuzN+rKQh2/6wCguLS8srxdXS2vrG5lZ5e6dtokQLbIlIRbrg0ElQ2yRJIXdWCMEvsKOf3M68Tu3qI2Mwisax9gPYBTKoRAueSVD4de6hLeUXrWyTJ+wt2hBpG6UYAj8C6ztMbdWGZeuWJX7Sn4PHFmpMJmaHrlT3cQiSTAkIQCY3qOHVM/BU1SKMxKbmIwBnEDI+zlNIQAT+d5sn4QWKAIh6j5lLxqYg/N1IjBkHfj4ZAF2bv95E/M/rJTSs91MZxglhKCaHSCqcHjJCy7wo5AOpkQgmnyOXIRegQi15CBELiZ5c6W8D+dv+nSrlUdu+pc2JVGfdZMke2xfXbEHbMGuycNVmLCXbPHtkTe7YerBfr1Xr7Hi1Ys51d9gvW+xc5U6EU</latexit> Ringdown stage The ringdown stage is dominated by the quasi-normal modes of the remnant which describe the response of the compact object to a perturbation. ω = ω R + i ω I The signal is a sum of exponentially damped sinusoids: f GW = ω R 2 π τ damp = − 1 ω I LVC, PRL 116 (2016) 061102 Elisa Maggio - Exotic Compact Objects Cortona Young 2020 3/14