Speaker
Dr
Federico Guercilena
(IKP - Tu Darmstadt)
Description
We perform full GR simulations of binary neutron-star mergers em-
ploying three different nuclear-physics EOS, considering both equal-
and unequal-mass configurations, and adopting a leakage scheme to ac-
count for neutrino radiative losses. Using a combination of techniques,
we carry out an extensive and systematic study of the hydrodynamical,
thermodynamical, and geometrical properties of the matter ejected dy-
namically, employing a nuclear-reaction network to recover the relative
abundances of heavy elements produced by each configurations. Three
results are particularly important. First we find that within the sample
considered here, both the properties of the dynamical ejecta and the
nucleosynthesis yields are robust against variations of the EOS and
masses. Second, using a conservative but robust criterion for unbound
matter, we find that the amount of ejected mass is less than 1e-3 so-
lar masses, hence at least one order of magnitude smaller than the
standard assumptions in modelling kilonova signals. Finally, using a
simplified and gray-opacity model we assess the observability of the
kilonova emission, finding that for all binaries the luminosity peaks
around ~1/2 day in the H-band, reaching a maximum magnitude of
-13, and decreasing rapidly after. Supported by European Research
Council Grant No. 677912 EUROPIUM
Primary author
Dr
Luke Bovard
(ITP, Uni Frankfurt)
Co-authors
Prof.
Almudena Arcones
(IKP, TU Darmstadt/GSI, Darmstadt)
Dr
Dirk Martin
(IKP, TU Darmstadt)
Dr
Federico Guercilena
(IKP - Tu Darmstadt)
Prof.
Luciano Rezzolla
(University of Frankfurt)
Dr
Oleg Korobkin
(LANL, Los Alamos)
