Zobrazeno 1 - 10
of 137
pro vyhledávání: '"Jumpei Takata"'
Autor:
Ting Tao, Ryota Sato, Yusuke Matsuda, Jumpei Takata, Fijun Kim, Yukio Daikubara, Koji Fujita, Kotaro Hanamoto, Fumio Kinoshita, Ricki Colman, Mamiko Koshiba
Publikováno v:
J, Vol 3, Iss 2, Pp 138-150 (2020)
The prevalence of advanced medical treatment has led to global population aging, resulting in increased numbers of dementia patients. One of the most intractable symptoms of dementia is apathy, or lack of interest and enthusiasm, which can accompany
Externí odkaz:
https://doaj.org/article/f218d716c9b9437a979e7c777ce7dece
Autor:
Ka-Yui Au, Jay Strader, Samuel J. Swihart, Lupin C. C. Lin, Albert K. H. Kong, Jumpei Takata, Chung-Yue Hui, Teresa Panurach, Isabella Molina, Elias Aydi, Kirill Sokolovsky, Kwan-Lok Li
Publikováno v:
The Astrophysical Journal, Vol 943, Iss 2, p 103 (2023)
We present the study of multiwavelength observations of an unidentified Fermi Large Area Telescope (LAT) source, 4FGL J1910.7−5320, a new candidate redback millisecond pulsar binary. In the 4FGL 95% error region of 4FGL J1910.7−5320, we find a po
Externí odkaz:
https://doaj.org/article/0b9447b2b6904924ab300b7acee723f1
Publikováno v:
Journal of Astronomy and Space Sciences, Vol 33, Iss 2, Pp 93-99 (2016)
A redback system is a binary system composed of a pulsar and a main sequence star. The inverse Compton (IC) scattering between the stellar soft photons and the relativistic pulsar wind will generate orbital-modulating GeV photons. We look for these
Externí odkaz:
https://doaj.org/article/eb112781ec0e44329605b6158e38f22e
Autor:
Kwong Sang Cheng, Jumpei Takata
Publikováno v:
Journal of Astronomy and Space Sciences, Vol 33, Iss 2, Pp 69-73 (2016)
We use the non-stationary three dimensional two-layer outer gap model to explain gamma-ray emissions from a pulsar magnetosphere. We found out that for some pulsars like the Geminga pulsar, it was hard to explain emissions above a level of around 1
Externí odkaz:
https://doaj.org/article/b08d9f0751c6402f8504b3f05a4fdd4d
Publikováno v:
Journal of Astronomy and Space Sciences, Vol 33, Iss 2, Pp 75-91 (2016)
It is generally believed that the high energy emissions from isolated pulsars are emitted from relativistic electrons/positrons accelerated in outer magnetospheric accelerators (outergaps) via a curvature radiation mechanism, which has a simple exp
Externí odkaz:
https://doaj.org/article/e8fb93cb79b74950a8e7517482fca3c0
Publikováno v:
Journal of Astronomy and Space Sciences, Vol 30, Iss 2, Pp 91-94 (2013)
We use the outer gap model to explain the spectrum and the energy dependent light curves of the X-ray and soft γ-ray radiations of the spin-down powered pulsar PSR B1509-58. In the outer gap model, most pairs inside the gap are created around the
Externí odkaz:
https://doaj.org/article/beb8e7f5a46b460da97641eda8c1cec1
Publikováno v:
Journal of Advanced Mechanical Design, Systems, and Manufacturing, Vol 2, Iss 5, Pp 860-873 (2008)
We are developing an optical three-axis tactile sensor capable of acquiring normal and shearing force to mount on a robotic finger. The tactile sensor is based on the principle of an optical waveguide-type tactile sensor, which is composed of an acry
Externí odkaz:
https://doaj.org/article/2247e668045a45eebe7bcb58c583c50f
Autor:
Jason Hung Kit Wu, Chung Yue Hui, Regina Hsiu Hui Huang, Albert Kwok Hing Kong, Kwong Sang Cheng, Jumpei Takata, Pak Hin Thomas Tam, Eric Man Ho Wu, Joe Liu
Publikováno v:
Journal of Astronomy and Space Sciences, Vol 30, Iss 2, Pp 83-85 (2013)
Anomalous X-ray pulsars (AXPs) are thought to be magnetars which are young isolated neutron stars with extremely strong magnetic fields of >1014 Gauss. Their tremendous magnetic fields inferred from the spin parameters provide a huge energy reservo
Externí odkaz:
https://doaj.org/article/3e16e1ebf3b34782884279f6115593b9
We study GeV emission from gamma-ray binaries by assuming that the compact object is a young pulsar. We assume that the relativistic unshocked pulsar wind with Lorentz factor of 10^4~5 can produce the GeV emission by the inverse-Compton scattering pr
Externí odkaz:
http://arxiv.org/abs/2004.04337
Autor:
Paul K. H. Yeung, Lupin Chun-Che Lin, C. P. Hu, C. Y. Hui, Albert K. H. Kong, Hui-Hui Wang, Jumpei Takata
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 503:4908-4917
PSR J1420-6048 is a young gamma-ray pulsar with recurrent glitches. Utilizing long-term monitoring data obtained from the Fermi Gamma-ray Space Telescope, we found that PSR J1420-6048 has shown gamma-ray flux variation and we also detected four glitc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1c645c307b662dfcdb6b7556204a19e2
https://doi.org/10.1093/mnras/stab783
https://doi.org/10.1093/mnras/stab783