TY - JOUR A1 - Li, Jia Jie A1 - Sedrakian, Armen A1 - Weber, Fridolin T1 - Rapidly rotating Δ-resonance-admixed hypernuclear compact stars T2 - Physics letters B N2 - We use a set of hadronic equations of state derived from covariant density functional theory to study the impact of their high-density behavior on the properties of rapidly rotating Δ-resonance-admixed hyperonic compact stars. In particular, we explore systematically the effects of variations of the bulk energy isoscalar skewness, Qsat, and the symmetry energy slope, Lsym, on the masses of rapidly rotating compact stars. With models for equation of state satisfying all the modern astrophysical constraints, excessively large gravitational masses of around 2.5M⊙ are only obtained under three conditions: (a) strongly attractive Δ-resonance potential in nuclear matter, (b) maximally fast (Keplerian) rotation, and (c) parameter ranges Qsat≳500 MeV and Lsym≲50 MeV. These values of Qsat and Lsym have a rather small overlap with a large sample (total of about 260) parametrizations of covariant nucleonic density functionals. The extreme nature of requirements (a)-(c) reinforces the theoretical expectation that the secondary object involved in the GW190814 event is likely to be a low-mass black hole rather than a supramassive neutron star. KW - Equation of state KW - Heavy baryons KW - Compact stars KW - Rapid rotation KW - Gravitational waves Y1 - 2020 UR - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/69866 UR - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-698667 SN - 1873-2445 SN - 0370-2693 VL - 810 IS - 135812 PB - Elsevier CY - Amsterdam ER -