Abstract
We study the stress tensor of electron in strong magnetic fields which are greater than the critical value Bc≃4.4×1013 G. We claim that such a strong magnetic field induces the anisotropic kinetic pressure term of electron in magnetohydrodynamic equations and can generate entropy in collisional quantum plasmas. We discuss its consequence to the neutrino-driven wind in core-collapse supernovae and argue that it can produce large entropy per baryon, S∼400kB. This mechanism might successfully account for the production of the heavy nuclei with mass numbers A=80-250 through the r-process nucleosynthesis.
| Original language | English |
|---|---|
| Pages (from-to) | 433-441 |
| Number of pages | 9 |
| Journal | Astroparticle Physics |
| Volume | 21 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 2004 Jul |
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ASJC Scopus subject areas
- Nuclear and High Energy Physics
Cite this
Anisotropic kinetic pressure in ideal MHD and application to entropy production in neutrino-driven wind in supernovae. / Kohri, Kazunori; Yamada, Shoichi; Nagataki, Shigehiro.
In: Astroparticle Physics, Vol. 21, No. 4, 07.2004, p. 433-441.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Anisotropic kinetic pressure in ideal MHD and application to entropy production in neutrino-driven wind in supernovae
AU - Kohri, Kazunori
AU - Yamada, Shoichi
AU - Nagataki, Shigehiro
PY - 2004/7
Y1 - 2004/7
N2 - We study the stress tensor of electron in strong magnetic fields which are greater than the critical value Bc≃4.4×1013 G. We claim that such a strong magnetic field induces the anisotropic kinetic pressure term of electron in magnetohydrodynamic equations and can generate entropy in collisional quantum plasmas. We discuss its consequence to the neutrino-driven wind in core-collapse supernovae and argue that it can produce large entropy per baryon, S∼400kB. This mechanism might successfully account for the production of the heavy nuclei with mass numbers A=80-250 through the r-process nucleosynthesis.
AB - We study the stress tensor of electron in strong magnetic fields which are greater than the critical value Bc≃4.4×1013 G. We claim that such a strong magnetic field induces the anisotropic kinetic pressure term of electron in magnetohydrodynamic equations and can generate entropy in collisional quantum plasmas. We discuss its consequence to the neutrino-driven wind in core-collapse supernovae and argue that it can produce large entropy per baryon, S∼400kB. This mechanism might successfully account for the production of the heavy nuclei with mass numbers A=80-250 through the r-process nucleosynthesis.
UR - http://www.scopus.com/inward/record.url?scp=2942689851&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=2942689851&partnerID=8YFLogxK
U2 - 10.1016/j.astropartphys.2004.02.007
DO - 10.1016/j.astropartphys.2004.02.007
M3 - Article
AN - SCOPUS:2942689851
VL - 21
SP - 433
EP - 441
JO - Astroparticle Physics
JF - Astroparticle Physics
SN - 0927-6505
IS - 4
ER -