BEGIN:VCALENDAR VERSION:2.0 PRODID:-//linuxsoftware.nz//NONSGML Joyous v1.4//EN BEGIN:VEVENT SUMMARY:Breaking black-hole uniqueness at supermassive scales DTSTART:20250206T143000Z DTEND:20250206T160000Z DTSTAMP:20260805T095529Z UID:7391ddc4-dde9-453d-afd2-db2cd65b3901 SEQUENCE:1 CREATED:20250204T100023Z DESCRIPTION: In general relativity\, all vacuum black holes are described by the Kerr metric. However\, beyond general relativity\, there is a preva iling expectation that deviations from the Kerr solution are more likely t o manifest with increasing horizon curvature\, making solar-mass black hol es more promising grounds to test general relativity. In this talk I will challenge this expectation and discuss a model where black holes differ fr om Kerr only in a finite mass range\, bounded from above and below. In par ticular\, black-hole uniqueness can be broken at supermassive black-hole s cales\, while solar-mass black holes remain well-described by the Kerr sol ution. LAST-MODIFIED:20250204T100023Z LOCATION:DF Seminar Room (2-8.3)\, 2nd floor of Physics Building URL:http://df.vps.tecnico.ulisboa.pt/en/events/breaking-black-hole-uniquen ess-at-supermassive-scales/ X-ALT-DESC;FMTTYPE=text/html:

In general relativ ity\, all vacuum black holes are described by the Kerr metric. However\, b eyond general relativity\, there is a prevailing expectation that deviatio ns from the Kerr solution are more likely to manifest with increasing hori zon curvature\, making solar-mass black holes more promising grounds to te st general relativity.

In this talk I will challenge this expect ation and discuss a model where black holes differ from Kerr only in a fin ite mass range\, bounded from above and below. In particular\, black-hole uniqueness can be broken at supermassive black-hole scales\, while solar-m ass black holes remain well-described by the Kerr solution.

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