Search Results - "Kawanaka, N"
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Neutrino-cooled Accretion Disk and Its Stability
Published in The Astrophysical journal (20-06-2007)“…We investigate the structure and stability of hypercritical accretion flows around stellar-mass black holes, taking into account neutrino cooling, lepton…”
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Coronal Neutrino Emission in Hypercritical Accretion Flows
Published in The Astrophysical journal (01-03-2008)“…Hypercritical accretion flows onto stellar mass black holes (BHs) are commonly believed to be as a promising model of central engines of gamma-ray bursts…”
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Iron Fluorescent Line Emission from Black Hole Accretion Disks with Magnetic Reconnection-heated Corona
Published in The Astrophysical journal (10-12-2005)“…We investigate the iron Ka fluorescent line produced by hard X-ray photons from the magnetic reconnection-heated corona. The hot corona with temperature of 610…”
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Direct Measurement of the Cosmic-Ray Proton Spectrum from 50 GeV to 10 TeV with the Calorimetric Electron Telescope on the International Space Station
Published in Physical review letters (10-05-2019)“…In this paper, we present the analysis and results of a direct measurement of the cosmic-ray proton spectrum with the CALET instrument onboard the…”
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Extended Measurement of the Cosmic-Ray Electron and Positron Spectrum from 11 GeV to 4.8 TeV with the Calorimetric Electron Telescope on the International Space Station
Published in Physical review letters (29-06-2018)“…Extended results on the cosmic-ray electron + positron spectrum from 11 GeV to 4.8 TeV are presented based on observations with the Calorimetric Electron…”
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Direct Measurement of the Cosmic-Ray Carbon and Oxygen Spectra from 10 GeV/n to 2.2 TeV/n with the Calorimetric Electron Telescope on the International Space Station
Published in Physical review letters (18-12-2020)“…In this paper, we present the measurement of the energy spectra of carbon and oxygen in cosmic rays based on observations with the Calorimetric Electron…”
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Measurement of the Iron Spectrum in Cosmic Rays from 10 GeV/n to 2.0 TeV/n with the Calorimetric Electron Telescope on the International Space Station
Published in Physical review letters (18-06-2021)“…The Calorimetric Electron Telescope (CALET), in operation on the International Space Station since 2015, collected a large sample of cosmic-ray iron over a…”
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Cosmic-Ray Boron Flux Measured from 8.4 GeV/n to 3.8 TeV/n with the Calorimetric Electron Telescope on the International Space Station
Published in Physical review letters (16-12-2022)“…We present the measurement of the energy dependence of the boron flux in cosmic rays and its ratio to the carbon flux in an energy interval from 8.4 GeV/n to…”
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Direct Measurement of the Cosmic-Ray Helium Spectrum from 40 GeV to 250 TeV with the Calorimetric Electron Telescope on the International Space Station
Published in Physical review letters (28-04-2023)“…We present the results of a direct measurement of the cosmic-ray helium spectrum with the CALET instrument in operation on the International Space Station…”
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Direct Measurement of the Nickel Spectrum in Cosmic Rays in the Energy Range from 8.8 GeV/n to 240 GeV/n with CALET on the International Space Station
Published in Physical review letters (01-04-2022)“…The relative abundance of cosmic ray nickel nuclei with respect to iron is by far larger than for all other transiron elements; therefore it provides a…”
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Charge-Sign Dependent Cosmic-Ray Modulation Observed with the Calorimetric Electron Telescope on the International Space Station
Published in Physical review letters (26-05-2023)“…We present the observation of a charge-sign dependent solar modulation of galactic cosmic rays (GCRs) with the Calorimetric Electron Telescope onboard the…”
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Direct Measurement of the Spectral Structure of Cosmic-Ray Electrons+Positrons in the Tev Region With Calet on the International Space Station
Published in Physical review letters (10-11-2023)“…Detailed measurements of the spectral structure of cosmic-ray electrons and positrons from 10.6 GeV to 7.5 TeV are presented from over 7 years of observations…”
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CALET Search for Electromagnetic Counterparts of Gravitational Waves during the LIGO/Virgo O3 Run
Published in The Astrophysical journal (01-07-2022)“…The CALorimetric Electron Telescope (CALET)on the International Space Station consists of a high-energy cosmic-ray CALorimeter (CAL)and a lower-energy CALET…”
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Direct measurements of cosmic – Ray iron and nickel with CALET on the International Space Station
Published in Advances in space research (01-11-2024)“…Iron and nickel cosmic ray nuclei play a key role in the understanding of the acceleration and propagation mechanisms of charged particles in our Galaxy. In…”
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The Calorimetric Electron Telescope (CALET) on the International Space Station: Results from the first eight years on orbit
Published in Advances in space research (01-11-2024)“…The Calorimetric Electron Telescope, CALET, is an astroparticle physics mission installed on the International Space Station, ISS. The primary objective of the…”
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Direct Measurement of the Nickel Spectrum in Cosmic Rays in the Energy Range from 8.8 GeV/$\mathcal{n}$ to 240 GeV/$\mathcal{n}$ with CALET on the International Space Station
Published in Physical review letters (01-04-2022)“…The relative abundance of cosmic ray nickel nuclei with respect to iron is by far larger than for all other transiron elements; therefore it provides a…”
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Fourier transforms of nilpotently supported invariant functions on a simple lie algebra over a finite field
Published in Inventiones mathematicae (01-10-1982)Get full text
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Dead Zone Formation and Nonsteady Hyperaccretion in Collapsar Disks: A Possible Origin of Short-Term Variability in the Prompt Emission of Gamma-Ray Bursts
Published in The Astrophysical journal (01-07-2007)“…The central engine of gamma-ray bursts (GRBs) is believed to be a hot and dense disk with hyperaccretion onto a few solar-mass black hole. We investigate where…”
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