Zobrazeno 1 - 10
of 349
pro vyhledávání: '"Myung Ki Cheoun"'
Publikováno v:
The Astrophysical Journal, Vol 944, Iss 1, p 2 (2023)
We have studied the large-scale dynamo forced with helical magnetic energy. Compared to the kinetic forcing process, the magnetic process is not clearly observed nor intuitive. However, it may represent the actual B field amplification in the stellar
Externí odkaz:
https://doaj.org/article/42f9dd44c26d40c98ead9d0c6195f0fe
Publikováno v:
The Astrophysical Journal, Vol 975, Iss 1, p 51 (2024)
It is thought that photon vortices are predominantly produced in extremely strong magnetic fields in the Universe. Because the photon vortex may cause significant large angular momentum transfer in interactions with atomic nuclei, stellar nucleosynth
Externí odkaz:
https://doaj.org/article/2e766fc2e6d146449c907a2849cb7962
Publikováno v:
Physical Review Research, Vol 5, Iss 4, p 043289 (2023)
We formulate a theoretical approach to describe photon vortex production in synchrotron/cyclotron radiation from a helical moving electron under a uniform magnetic field in the relativistic quantum framework. In quantum theory, electron orbitals in a
Externí odkaz:
https://doaj.org/article/164948891617447388ee128f4bc704b3
Publikováno v:
Physics Letters B, Vol 826, Iss , Pp 136779- (2022)
We explore photon vortex generation in synchrotron radiations from a spiral moving electron under a uniform magnetic field along z-axis using Landau quantization. The obtained wave-function of the photon vortices is the eigen-state of the z-component
Externí odkaz:
https://doaj.org/article/2cc5d9f4fae34facb9e96b5bca5e9a50
Autor:
Tomoyuki Maruyama, A. Baha Balantekin, Myung-Ki Cheoun, Toshitaka Kajino, Motohiko Kusakabe, Grant J. Mathews
Publikováno v:
Physics Letters B, Vol 824, Iss , Pp 136813- (2022)
We study neutrino and antineutrino emission from the direct Urca process in neutron-star matter in the presence of strong magnetic fields. We calculate the neutrino emissivity of the direct Urca process, whereby a neutron converts to a proton, an ele
Externí odkaz:
https://doaj.org/article/8c6c3fdcab074460b192c560ebbe58ab
Publikováno v:
Physics Letters B, Vol 805, Iss , Pp - (2020)
We study the νν¯-pair synchrotron emission from electrons and protons in a relativistic quantum approach. This process occurs only in the presence of a strong magnetic field, and it is considered to be one of effective processes for neutron star c
Externí odkaz:
https://doaj.org/article/6b251bbacf694cd3815d33999d1528a2
Autor:
Tsuyoshi Miyatsu, Myung-Ki Cheoun, Chikako Ishizuka, K.S. Kim, Tomoyuki Maruyama, Koichi Saito
Publikováno v:
Physics Letters B, Vol 803, Iss , Pp - (2020)
Using the Lorentz-covariant decomposition of nucleon self-energies based on the Hugenholtz–Van Hove theorem, we study the effect of Fock terms on the nuclear symmetry energy and its slope parameter within relativistic Hartree-Fock approximation. It
Externí odkaz:
https://doaj.org/article/1c8bedaf3f5142c9b1bbe5e7e451cf07
Publikováno v:
Physics Letters B, Vol 780, Iss , Pp 455-460 (2018)
We discuss the role of two-neutron transfer processes in the fusion reaction of the 9,11Li + 208Pb systems. We first analyze the 9Li + 208Pb reaction by taking into account the coupling to the 7Li + 210Pb channel. To this end, we assume that two neut
Externí odkaz:
https://doaj.org/article/45482b857c454417886a4256156572c7
Publikováno v:
Physics Letters B, Vol 779, Iss , Pp 160-165 (2018)
We utilize an exact quantum calculation to explore axion emission from electrons and protons in the presence of the strong magnetic field of magnetars. The axion is emitted via transitions between the Landau levels generated by the strong magnetic fi
Externí odkaz:
https://doaj.org/article/3f74793c1f29443caae4813d6f9f59b2
Publikováno v:
New Physics: Sae Mulli. 72:594-604
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a8faaa5183604f36f2f60ae1394d0226
https://doi.org/10.3938/npsm.72.594
https://doi.org/10.3938/npsm.72.594