Zobrazeno 1 - 10
of 20
pro vyhledávání: '"Shin-ichirou Fujimoto"'
Publikováno v:
The Astrophysical Journal. 656:382-392
We investigate synthesis of heavy elements in a collapsar. We have calculated detailed composition of magnetically driven jets ejected from a collapsar, which is based on long-term, magneto-hydrodynamic simulations of a rapidly rotating massive star
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::47bee2d7b4d46d160316364aa2121046
https://doi.org/10.1086/509908
https://doi.org/10.1086/509908
Publikováno v:
The Astrophysical Journal. 644:1040-1055
We perform two-dimensional, axisymmetric, magnetohydrodynamic simulations of the collapse of a rotating star of 40 Msun and in the light of the collapsar model of gamma-ray burst. Considering two distributions of angular momentum, up to \sim 10^{17}
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4873d816eb15b80eb343408e57cb53b4
https://doi.org/10.1086/503624
https://doi.org/10.1086/503624
Publikováno v:
Nuclear Physics A. 758:39-42
We investigate nucleosynthesis inside an accretion disk formed during a collapse of a massive star. The mass accretion rate and the mass of a central object vary with time according to a fall-back scenario. The disk is confirmed to be dominated by ad
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::94b8185382190650787a569f934649f9
https://doi.org/10.1016/j.nuclphysa.2005.05.012
https://doi.org/10.1016/j.nuclphysa.2005.05.012
Publikováno v:
Nuclear Physics A. 758:635-638
We investigate the r-process that occurs due to the explosion from an inner region of the Fe-core. It is shown that the solar r-process abundances are rather well reproduced for a model of 13 M ⊙ . We also examine whether the fission affects final
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a48982a99c6cf355824fe88b39cca69c
https://doi.org/10.1016/j.nuclphysa.2005.05.114
https://doi.org/10.1016/j.nuclphysa.2005.05.114
Publikováno v:
Nuclear Physics A. 758:47-50
We investigate heavy element synthesis through thermally driven winds launched from an inner neutron-rich region of an accretion disk in a collapsar. Various heavy elements are found to be produced through the wind. There exist three types of winds c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c5cf580f17c0ea4c74d6be3bcd8c5e80
https://doi.org/10.1016/j.nuclphysa.2005.05.013
https://doi.org/10.1016/j.nuclphysa.2005.05.013
Publikováno v:
The Astrophysical Journal. 614:847-857
We investigate nucleosynthesis inside both a gamma-ray burst accretion disk and a wind launched from an inner region of the disk using one-dimensional models of the disk and wind and a nuclear reaction network. Far from a central black hole, the comp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eb33f8ea295da3d8be7704b69a9b14fb
https://doi.org/10.1086/423778
https://doi.org/10.1086/423778
Publikováno v:
Publications of the Astronomical Society of Japan. 56:407-414
Taking into account the increasing mass of a central object through fall-back, we investigated nucleosynthesis inside an accretion disk formed during a core collapse of a massive star. It has been confirmed that the disk is an advection-dominated acc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7f1e8f1a167925019160ebb225b4e5ac
https://doi.org/10.1093/pasj/56.2.407
https://doi.org/10.1093/pasj/56.2.407
Publikováno v:
The Astrophysical Journal. 603:242-251
Using both shell-flash and realistic models on accreting neutron stars with the full nuclear reaction network up to Bi, we investigate the detailed relation between the final products of the rp-process and the ignition pressure. We find that nuclear
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ebb5f7150bcf426253319892695e575f
https://doi.org/10.1086/381354
https://doi.org/10.1086/381354
Publikováno v:
The Astrophysical Journal. 585:418-428
We investigate p-process nucleosynthesis in a supercritical accretion disk around a compact object of 1.4 M_solar, using the self-similar solution of an optically thick advection dominated flow. Supercritical accretion is expected to occur in a super
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7f12bd0b2075615dbc53fd116fddbb96
https://doi.org/10.1086/345982
https://doi.org/10.1086/345982
Autor:
Osamu Koike, Shin Mineshige, Shin Ichirou Fujimoto, Masa-aki Hashimoto, Ryuichi Matsuba, Kenzo Arai
Publikováno v:
Publications of the Astronomical Society of Japan. 53:509-516
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cc28a1ac5007a52489f05ec993ea8638
https://doi.org/10.1093/pasj/53.3.509
https://doi.org/10.1093/pasj/53.3.509