ORCID Profile
0000-0001-5769-9471
Current Organisations
University of California, Berkeley
,
University of Tokyo
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Publisher: Springer Science and Business Media LLC
Date: 17-07-2011
DOI: 10.1038/NGEO1205
Publisher: Elsevier BV
Date: 2015
Publisher: American Physical Society (APS)
Date: 17-01-2003
Publisher: American Astronomical Society
Date: 03-07-2018
Publisher: American Physical Society (APS)
Date: 13-09-2011
Publisher: IOP Publishing
Date: 27-04-2009
Publisher: American Astronomical Society
Date: 20-12-2018
Publisher: American Physical Society (APS)
Date: 05-06-2008
Publisher: American Physical Society (APS)
Date: 23-02-2010
Publisher: American Astronomical Society
Date: 06-02-2019
Publisher: Springer Science and Business Media LLC
Date: 28-07-2005
DOI: 10.1038/NATURE03980
Abstract: The detection of electron antineutrinos produced by natural radioactivity in the Earth could yield important geophysical information. The Kamioka liquid scintillator antineutrino detector (KamLAND) has the sensitivity to detect electron antineutrinos produced by the decay of 238U and 232Th within the Earth. Earth composition models suggest that the radiogenic power from these isotope decays is 16 TW, approximately half of the total measured heat dissipation rate from the Earth. Here we present results from a search for geoneutrinos with KamLAND. Assuming a Th/U mass concentration ratio of 3.9, the 90 per cent confidence interval for the total number of geoneutrinos detected is 4.5 to 54.2. This result is consistent with the central value of 19 predicted by geophysical models. Although our present data have limited statistical power, they nevertheless provide by direct means an upper limit (60 TW) for the radiogenic power of U and Th in the Earth, a quantity that is currently poorly constrained.
Publisher: American Physical Society (APS)
Date: 03-2005
Publisher: American Physical Society (APS)
Date: 06-04-2022
Publisher: Elsevier BV
Date: 09-2008
Publisher: American Physical Society (APS)
Date: 20-02-2004
Publisher: American Physical Society (APS)
Date: 17-03-2006
Publisher: American Physical Society (APS)
Date: 04-03-2011
Publisher: American Astronomical Society
Date: 17-01-2012
Publisher: American Astronomical Society
Date: 10-2019
Abstract: We report the discovery of 28 quasars and 7 luminous galaxies at 5.7 ≤ z ≤ 7.0. This is the tenth in a series of papers from the Subaru High- z Exploration of Low-Luminosity Quasars (SHELLQs) project, which exploits the deep multiband imaging data produced by the Hyper Suprime-Cam (HSC) Subaru Strategic Program survey. The total number of spectroscopically identified objects in SHELLQs has now grown to 93 high- z quasars, 31 high- z luminous galaxies, 16 [O iii ] emitters at z ∼ 0.8, and 65 Galactic cool dwarfs (low-mass stars and brown dwarfs). These objects were found over 900 deg 2 , surveyed by HSC between 2014 March and 2018 January. The full quasar s le includes 18 objects with very strong and narrow Ly α emission, whose stacked spectrum is clearly different from that of other quasars or galaxies. While the stacked spectrum shows N v λ 1240 emission and resembles that of lower- z narrow-line quasars, the small Ly α width may suggest a significant contribution from the host galaxies. Thus, these objects may be composites of quasars and star-forming galaxies.
Publisher: American Physical Society (APS)
Date: 07-2002
Publisher: Elsevier BV
Date: 07-2004
Publisher: American Physical Society (APS)
Date: 17-02-2000
Publisher: IOP Publishing
Date: 07-2010
DOI: 10.1088/0954-3899/37/7A/075021
Abstract: This biennial Review summarizes much of particle physics. Using data from previous editions, plus 2158 new measurements from 551 papers, we list, evaluate, and average measured properties of gauge bosons, leptons, quarks, mesons, and baryons. We also summarize searches for hypothetical particles such as Higgs bosons, heavy neutrinos, and supersymmetric particles. All the particle properties and search limits are listed in Summary Tables. We also give numerous tables, figures, formulae, and reviews of topics such as the Standard Model, particle detectors, probability, and statistics. Among the 108 reviews are many that are new or heavily revised including those on neutrino mass, mixing, and oscillations, QCD, top quark, CKM quark-mixing matrix, V ud & V us , V cb & V ub , fragmentation functions, particle detectors for accelerator and non-accelerator physics, magnetic monopoles, cosmological parameters, and big bang cosmology. A booklet is available containing the Summary Tables and abbreviated versions of some of the other sections of this full Review . All tables, listings, and reviews (and errata) are also available on the Particle Data Group website: pdg.lbl.gov .
Publisher: SPIE
Date: 09-08-2016
DOI: 10.1117/12.2232103
Publisher: IOP Publishing
Date: 07-2006
Location: United States of America
No related grants have been discovered for Hitoshi Murayama.