Zobrazeno 1 - 10
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pro vyhledávání: '"Morikawa, Masahiro"'
Autor:
Morikawa, Masahiro, Nakamichi, Akika
We first study the solar flare time sequence based on the GOES16 data. We find that the power spectrum density of the low-energy (E\leq E_{mean}) flare shows 1/f fluctuations, but the high-energy (E>E_{mean}) flare shows a flat spectrum. Further, we
Externí odkaz:
http://arxiv.org/abs/2310.07288
We first report that the seismic time-sequence data from around the world, excluding major earthquakes, consistently yield the power spectral density inversely proportional to the frequency f. This is the 1/f fluctuation that appears ubiquitously in
Externí odkaz:
http://arxiv.org/abs/2307.03192
Autor:
Morikawa, Masahiro, Nakamichi, Akika
We propose a simple model for the origin of pink noise (or 1/f fluctuation) based on the beat of cooperative waves. These cooperative waves arise spontaneously in a system with synchronization, resonance, and infrared divergence. Many cooperative wav
Externí odkaz:
http://arxiv.org/abs/2301.11176
Autor:
Morikawa, Masahiro
Many supermassive black holes (SMBH) of mass $10^{6\sim9}M_{\odot}$ are observed at the center of each galaxy even in the high redshift ($z\approx7$) Universe. To explain the early formation and the common existence of SMBH, we proposed previously th
Externí odkaz:
http://arxiv.org/abs/2107.05848
Autor:
Morikawa, Masahiro
The orchestra performance is full of sublime rich sounds. In particular, the unison of violins sounds different from the solo violin. We try to clarify this difference and similarity of unison and solo numerically analyzing the beat of `violins` with
Externí odkaz:
http://arxiv.org/abs/2104.08872
Autor:
Morikawa, Masahiro, Amaya, Suzuka
Planets are common objects in the Universe, observationally as well as theoretically. However, the standard theory of their formation encounters many difficulties, such as dust fall and disk lifetime problems. We positively analyze them, expecting th
Externí odkaz:
http://arxiv.org/abs/2007.15979
Autor:
Morikawa, Masahiro
We explore the transient dynamics associated with the emergence of the classical signal in the full quantum system. We start our study from the instability which promotes the squeezing of the quantum system. This is often interpreted as the particle
Externí odkaz:
http://arxiv.org/abs/1810.11293
Autor:
Yamazaki, Yasuhiro, Morikawa, Masahiro, Hamaguchi, Tatsuya, Habu, Yoichiro, Ohide, Yuhei, Takagi, Kaito
Publikováno v:
In Surface & Coatings Technology 15 June 2022 439
Autor:
Morikawa, Masahiro
Super-rotations of the planetary atmosphere are reconsidered from the dynamical point of view. In particular, we emphasize that the super-rotation appears spontaneously without any explicit force. Although the super-rotation violates the bilateral sy
Externí odkaz:
http://arxiv.org/abs/1708.07306
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