252 citations · 984 across the 25 of their papers we have counts for
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Tellurium emission line in kilonova AT 2017gfo
Kenta Hotokezaka, Masaomi Tanaka, Daiji Kato +1
The late-time spectra of the kilonova AT 2017gfo associated with GW170817 exhibit a strong emission line feature at . The line structure develops with time and there…
Cerium features in kilonova near-infrared spectra: implication from a chemically peculiar star
Masaomi Tanaka, Nanae Domoto, Wako Aoki +14
Observations of the kilonova from a neutron star merger event GW170817 opened a way to directly study r-process nucleosynthesis by neutron star mergers. It is, however, challenging…
Diversity of early kilonova with the realistic opacities of highly ionized heavy elements
Smaranika Banerjee, Masaomi Tanaka, Daiji Kato +1
We investigate the early (t < 1 day) kilonova from the neutron star merger by deriving atomic opacities for all the elements from La to Ra (Z = 57 - 88) ionized to the states V - X…
Lanthanide Features in Near-infrared Spectra of Kilonovae
Nanae Domoto, Masaomi Tanaka, Daiji Kato +3
The observations of GW170817/AT2017gfo have provided us with evidence that binary neutron star mergers are sites of -process nucleosynthesis. However, the observed signatures in…
Tungsten vs Selenium as a potential source of kilonova nebular emission observed by Spitzer
Kenta Hotokezaka, Masaomi Tanaka, Daiji Kato +1
Infrared emission lines arising from transitions between fine structure levels of heavy elements are expected to produce kilonova nebular emission. For the kilonova in GW170817, st…
Opacity of the highly ionized lanthanides and the effect on the early kilonova
Smaranika Banerjee, Masaomi Tanaka, Daiji Kato +3
We investigate the effect of the presence of lanthanides (Z = 57- 71) on the kilonova at t~hours after the neutron star merger for the first time. For this purpose, we calculate th…