Zobrazeno 1 - 10
of 322
pro vyhledávání: '"Fujimoto Masayuki"'
Autor:
Ryu, Byungki, Chung, Jaywan, Kumagai, Masaya, Mato, Tomoya, Ando, Yuki, Gunji, Sakiko, Tanaka, Atsumi, Yana, Dewi, Fujimoto, Masayuki, Imai, Yoji, Katsura, Yukari, Park, SuDong
Publikováno v:
iScience 26, 106494 (2023)
A thermoelectric device is a heat engine that directly converts heat into electricity. Many materials with a high figure of merit ZT have been discovered in anticipation of a high thermoelectric efficiency. However, there has been a lack of investiga
Externí odkaz:
http://arxiv.org/abs/2210.08837
We investigate X-ray bursts during the thermal evolution of an accreting neutron star which corresponds to the X-ray burster GS\ 1826-24. Physical quantities of the neutron star are included using an equation of state below and above the nuclear matt
Externí odkaz:
http://arxiv.org/abs/2001.08367
Mixing and fallback models in faint supernova models are supposed to reproduce the abundance patterns of observed carbon-enhanced metal-poor (CEMP) stars in the Galactic halo. A fine tuning of the model parameters for individual stars is required to
Externí odkaz:
http://arxiv.org/abs/2001.01420
Autor:
Ryu, Byungki, Chung, Jaywan, Kumagai, Masaya, Mato, Tomoya, Ando, Yuki, Gunji, Sakiko, Tanaka, Atsumi, Yana, Dewi, Fujimoto, Masayuki, Imai, Yoji, Katsura, Yukari, Park, SuDong
Publikováno v:
In iScience 21 April 2023 26(4)
Autor:
Suda, Takuma, Hidaka, Jun, Aoki, Wako, Katsuta, Yutaka, Yamada, Shimako, Fujimoto, Masayuki Y., Ohtani, Yukari, Masuyama, Miyu, Noda, Kazuhiro, Wada, Kentaro
We have constructed the database of stars in the local group using the extended version of the SAGA (Stellar Abundances for Galactic Archaeology) database that contains stars in 24 dwarf spheroidal galaxies and ultra faint dwarfs. The new version of
Externí odkaz:
http://arxiv.org/abs/1703.10009
MAXI J0556-332 is the hottest transient accreting neutron star at the beginning of its quiescence. A theoretical model with crustal heating indicates that an additional shallow heat source of Qshallow > 6 MeV per accreted nucleon is required in the s
Externí odkaz:
http://arxiv.org/abs/1703.01734
Autor:
Matsuo, Yasuhide, Hashimoto, Masa-aki, Hayashida, Koutarou, Liu, Helei, Noda, Tsuneo, Fujimoto, Masayuki Y.
Quiescent X-ray luminosities are presented in low mass X-ray binaries with use of evolutionary calculations. The calculated luminosities are compared with observed ones in terms of timeaveraged mass accretion rate. It is shown that neutrino emission
Externí odkaz:
http://arxiv.org/abs/1610.09100
The origin of carbon-enhanced metal-poor (CEMP) stars plays a key role in characterising the formation and evolution of the first stars and the Galaxy since the extremely-poor (EMP) stars with [Fe/H] \leq -2.5 share the common features of carbon enha
Externí odkaz:
http://arxiv.org/abs/1609.09317
We explore the possibility of observing Population III (Pop~III) stars, born of the primordial gas. Pop~III stars with masses below $0.8 M_\odot$ should survive to date though are not observed yet, but the existence of stars with low metallicity as [
Externí odkaz:
http://arxiv.org/abs/1603.06096
Autor:
Noda, Tsuneo, Yasutake, Nobutoshi, Hashimoto, Masa-aki, Maruyama, Toshiki, Tatsumi, Toshitaka, Fujimoto, Masayuki Y.
We show a scenario for the cooling of compact stars considering the central source of Cassiopeia A (Cas A). The Cas A observation shows that the central source is a compact star with high effective temperature, and it is consistent with the cooling w
Externí odkaz:
http://arxiv.org/abs/1512.05468