902 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- The University of TokyoJP376 papers
- RIKENJP189 papers
- Kyoto UniversityJP168 papers
- Institute of Space and Astronautical ScienceJP140 papers
- Japan Aerospace Exploration AgencyJP132 papers
- Tokyo Institute of TechnologyJP129 papers
- Nagoya UniversityJP127 papers
- Hiroshima UniversityJP117 papers
- Tokyo University of ScienceJP105 papers
- The University of OsakaJP100 papers
- Goddard Space Flight CenterUS96 papers
- Tohoku UniversityJP96 papers
44 papers · 1 filter
Characteristic cycle of a rank one sheaf and ramification theory
Yuri Yatagawa
We compute the characteristic cycle of a rank one sheaf on a smooth surface over a perfect field of positive characteristic. We construct a canonical lifting on the cotangent bundl…
PAPR Reduction of OFDM Through Pilot Shifting
Md. Sakir Hossain, Tetsuya Shimamura
Peak to Average Power Ratio (PAPR) of Orthogonal Frequency Division Multiplexing (OFDM) is a long-standing problem which has been hindering its performance for decades. In this pap…
Temperature Structure in the Perseus Cluster Core Observed with Hitomi
Hitomi Collaboration, Felix Aharonian, Hiroki Akamatsu +192
The present paper investigates the temperature structure of the X-ray emitting plasma in the core of the Perseus cluster using the 1.8--20.0 keV data obtained with the Soft X-ray S…
Atomic data and spectral modeling constraints from high-resolution X-ray observations of the Perseus cluster with Hitomi
Hitomi Collaboration, Felix Aharonian, Hiroki Akamatsu +192
The Hitomi SXS spectrum of the Perseus cluster, with 5 eV resolution in the 2-9 keV band, offers an unprecedented benchmark of the atomic modeling and database for hot collis…
Time Assignment System and Its Performance aboard the Hitomi Satellite
Yukikatsu Terada, Sunao Yamaguchi, Shigenobu Sugimoto +24
Fast timing capability in X-ray observation of astrophysical objects is one of the key properties for the ASTRO-H (Hitomi) mission. Absolute timing accuracies of 350 micro second o…
Hitomi Observations of the LMC SNR N132D: Highly Redshifted X-ray Emission from Iron Ejecta
Hitomi Collaboration, Felix Aharonian, Hiroki Akamatsu +191
We present Hitomi observations of N132D, a young, X-ray bright, O-rich core-collapse supernova remnant in the Large Magellanic Cloud (LMC). Despite a very short observation of only…
Energy Calibration of CALET Onboard the International Space Station
Y. Asaoka, Y. Akaike, Y. Komiya +91
In August 2015, the CALorimetric Electron Telescope (CALET), designed for long exposure observations of high energy cosmic rays, docked with the International Space Station (ISS) a…
Energy Spectrum of Cosmic-ray Electron and Positron from 10 GeV to 3 TeV Observed with the Calorimetric Electron Telescope on the International Space Station
O. Adriani, Y. Akaike, K. Asano +88
First results of a cosmic-ray electron + positron spectrum, from 10 GeV to 3 TeV, is presented based upon observations with the CALET instrument on the ISS starting in October, 201…
Solar abundance ratios of the iron-peak elements in the Perseus Cluster
Hitomi Collaboration
The metal abundance of the hot plasma that permeates galaxy clusters represents the accumulation of heavy elements produced by billions of supernovae. Therefore, X-ray spectroscopy…
Improved analysis for in muonic atoms by photonic interaction
Yuichi Uesaka, Yoshitaka Kuno, Joe Sato +2
Studies of the charged lepton flavor violating process of in muonic atoms by the four Fermi interaction [Y. Uesaka \textit{et al}., Phys. Rev. D {\bf 93}, 076006…
Glimpse of the highly obscured HMXB IGR J16318-4848 with Hitomi
Hitomi Collaboration, Felix Aharonian, Hiroki Akamatsu +191
We report a Hitomi observation of IGR J16318-4848, a high-mass X-ray binary system with an extremely strong absorption of N_H~10^{24} cm^{-2}. Previous X-ray studies revealed that…
Hitomi Observation of Radio Galaxy NGC 1275: The First X-ray Microcalorimeter Spectroscopy of Fe-Kα Line Emission from an Active Galactic Nucleus
Hitomi Collaboration, Felix Aharonian, Hiroki Akamatsu +191
The origin of the narrow Fe-Kα fluorescence line at 6.4 keV from active galactic nuclei has long been under debate; some of the possible sites are the outer accretion disk, the bro…
Atmospheric gas dynamics in the Perseus cluster observed with Hitomi
Hitomi Collaboration, Felix Aharonian, Hiroki Akamatsu +195
Extending the earlier measurements reported in Hitomi collaboration (2016, Nature, 535, 117), we examine the atmospheric gas motions within the central 100~kpc of the Perseus clust…
Mid-infrared excess from the west hot spot of the radio galaxy Pictor A unveiled by WISE
Naoki Isobe, Shoko Koyama, Motoki Kino +5
Mid-infrared properties are reported of the west hot spot of the radio galaxy Pictor A with the Wide-field Infrared Survey Explorer (WISE). The mid-infrared counterpart to the hot…
Measurements of resonant scattering in the Perseus cluster core with Hitomi SXS
Hitomi Collaboration, Felix Aharonian, Hiroki Akamatsu +192
Thanks to its high spectral resolution (~5 eV at 6 keV), the Soft X-ray Spectrometer (SXS) on board Hitomi enables us to measure the detailed structure of spatially resolved emissi…
Intermediate-Mass-Elements in Young Supernova Remnants Reveal Neutron Star Kicks by Asymmetric Explosions
Satoru Katsuda, Mikio Morii, Hans-Thomas Janka +9
The birth properties of neutron stars yield important information on the still debated physical processes that trigger the explosion and on intrinsic neutron-star physics. These pr…
Chiral Soliton Lattice Formation in Monoaxial Helimagnet Yb(NiCu)Al
Takeshi Matsumura, Yosuke Kita, Koya Kubo +6
Helical magnetic structures and its responses to external magnetic fields in Yb(NiCu)Al, with a chiral crystal structure of the space group , have been inv…
Exfoliation and van der Waals heterostructure assembly of intercalated ferromagnet Cr1/3TaS2
Yuji Yamasaki, Rai Moriya, Miho Arai +5
Ferromagnetic van der Waals (vdW) materials are in demand for spintronic devices with all-two-dimensional-materials heterostructures. Here, we demonstrate mechanical exfoliation of…
Smoothing estimates for the kinetic transport equation at the critical regularity
Neal Bez, Jayson Cunanan, Sanghyuk Lee
We prove smoothing estimates for velocity averages of the kinetic transport equation in hyperbolic Sobolev spaces at the critical regularity, leading to a complete characterisation…
Flavor structure from misalignment of inner products in noncommutative geometry
Masaki J. S. Yang
In this letter, we consider an idea that induces flavor structure from inner products in noncommutative geometry. Assuming proper components of vectors in enlarged re…
First direct mass measurements of nuclides around with a Multireflection Time-of-Flight Mass Spectrograph
Y. Ito, P. Schury, M. Wada +23
The masses of Es, Fm and the transfermium nuclei Md, and No, produced by hot- and cold-fusion reactions, in the vicinity of the deformed …
On the Strichartz estimates for orthonormal systems of initial data with regularity
Neal Bez, Younghun Hong, Sanghyuk Lee +2
The classical Strichartz estimates for the free Schrödinger propagator have recently been substantially generalised to estimates of the form \[ \bigg\|\sum_jλ_j|e^{itΔ}f_j|^2\bigg\…
Complete classification of Brieskorn polynomials up to the arc-analytic equivalence
Jean-Baptiste Campesato
It has been recently proved that the arc-analytic type of a singular Brieskorn polynomial determines its exponents. This last result may be seen as a real analogue of a theorem by…
Hitomi X-ray studies of Giant Radio Pulses from the Crab pulsar
Hitomi Collaboration, Felix Aharonian, Hiroki Akamatsu +201
To search for giant X-ray pulses correlated with the giant radio pulses (GRPs) from the Crab pulsar, we performed a simultaneous observation of the Crab pulsar with the X-ray satel…