6 papers
Heavy element dust explains the late-time spectra of kilonovae
Nanae Domoto, Kenta Hotokezaka, Daniel Kasen
Neutron star mergers are a leading site of -process, producing radioactively powered optical and infrared transients known as kilonovae. Observations of the kilonovae AT2017gfo,…
Theoretical study of Th III energy levels and transitions for applications to kilonova spectra
Laima KitovienÄ, Gediminas Gaigalas, Pavel Rynkun +3
The neutron star merger is a promising site of heavy element production. By producing heavy elements, the neutron star merger gives rise to a thermal transient called a kilonova. S…
Revisiting Near-Infrared Features of Kilonovae: The Importance of Gadolinium
Salma Rahmouni, Masaomi Tanaka, Nanae Domoto +7
The observation of the kilonova AT2017gfo and investigations of its light curves and spectra confirmed that neutron star mergers are sites of r-process nucleosynthesis. However, th…
Three dimensional end-to-end simulation for kilonova emission from a black-hole neutron-star merger
Kyohei Kawaguchi, Nanae Domoto, Sho Fujibayashi +5
We study long-term evolution of the matter ejected in a black-hole neutron-star (BH-NS) merger employing the results of a long-term numerical-relativity simulation and nucleosynthe…
Thorium in Kilonova Spectra: Exploring the Heaviest Detectable Element
Nanae Domoto, Shinya Wanajo, Masaomi Tanaka +2
Kilonova spectra provide us with the direct information of r-process nucleosynthesis in neutron star mergers. In this paper, we study the signatures of elements beyond the third r-…
Theoretical investigation of energy levels and transitions for Ce III with applications to kilonova spectra
G. Gaigalas, P. Rynkun, N. Domoto +3
Doubly ionized cerium (Ce) is one of the most important ions to understand the kilonova spectra. In particular, near-infrared (NIR) transitions of Ce III between the ground…