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440 papers · 1 filter
Mid-infrared spectra of the shocked Murchison CM chondrite: Comparison with astronomical observations of dust in debris disks
A. Morlok, C. Koike, N. Tomioka +2
We present laboratory mid-infrared transmission/absorption spectra obtained from matrix of the hydrated Murchison CM meteorite experimentally shocked at peak pressures of 10 to 49…
Mid-infrared spectra of differentiated meteorites (achondrites): Comparison with astronomical observations of dust in protoplanetary and debris disks
A. Morlok, C. Koike, K. Tomeoka +4
Mid-infrared (5 micron to 25 micron) transmission/absorption spectra of differentiated meteorites (achondrites) were measured to permit comparison with astronomical observations of…
Accretion geometry of the neutron star low mass X-ray binary Cyg X-2 from X-ray polarization measurements
R. Farinelli, S. Fabiani, J. Poutanen +92
We report spectro-polarimetric results of an observational campaign of the bright neutron star low-mass X-ray binary Cyg X-2 simultaneously observed by IXPE, NICER and INTEGRAL. Co…
Polarization properties of the weakly magnetized neutron star X-ray binary GS 1826-238 in the high soft state
Fiamma Capitanio, Sergio Fabiani, Andrea Gnarini +94
The launch of the Imaging X-ray Polarimetry Explorer (IXPE) on 2021 December 9 has opened a new window in X-ray astronomy. We report here the results of the first IXPE observation…
Lattice constants and magnetism of L10-ordered FePt under high pressure
S. Sawada, K. Okai, H. Fukui +10
We studied the relationship between the lattice constant and magnetism of L10-ordered FePt under high pressure by means of first-principles calculations and synchrotron x-ray measu…
Deformations of holomorphic-Higgs pairs
Takashi Ono
We study the deformation of the holomorphic-Higgs pair. The holomorphic-Higgs pair is a pair of a complex manifold and a Higgs bundle over it. We introduce the differential graded…
Experimentally shock-induced melt veins in basalt: Improving the shock classification of eucrites
Haruka Ono, Kosuke Kurosawa, Takafumi Niihara +15
Basaltic rocks occur widely on the terrestrial planets and differentiated asteroids, including the asteroid 4 Vesta. We conducted a shock recovery experiment with decaying compress…
Angular distribution of -rays from a neutron-induced -wave resonance of Xe
T. Okudaira, Y. Tani, S. Endo +16
A neutron-energy dependent angular distribution was measured for individual -rays from the 3.2 eV -wave resonance of Xe+, that shows enhanced parity violation owin…
JCMT BISTRO Observations: Magnetic Field Morphology of Bubbles Associated with NGC 6334
Mehrnoosh Tahani, Pierre Bastien, Ray S. Furuya +142
We study the HII regions associated with the NGC 6334 molecular cloud observed in the sub-millimeter and taken as part of the B-fields In STar-forming Region Observations (BISTRO)…
Strong Lensing of High-Energy Neutrinos
Yoon Chan Taak, Tommaso Treu, Yoshiyuki Inoue +1
We consider the effects of strong gravitational lensing by galaxy-scale deflectors on the observations of high-energy (EGeV) neutrinos (HEN). For HEN at cosmological distances…
Rheology of dilute granular gas mixtures where the grains interact via a square shoulder and well potential
Kiwamu Yoshii, Satoshi Takada, Kosuke Kurosawa +1
We develop the rheology of a dilute granular gas mixture. Motivated by the interaction of charged granular particles, we assume that the grains interact via a square shoulder and w…
Numerical Study on Excitation of Turbulence and Oscillation in Above-the-loop-top Region of a Solar Flare
Kengo Shibata, Shinsuke Takasao, Katharine K. Reeves
Extreme ultraviolet imaging spectroscopic observations often show an increase in line width around the loop-top or above-loop-top (ALT) region of solar flares, suggestive of turbul…
Effects of dust sources on dust attenuation properties in IllustrisTNG galaxies at
Yuan-Ming Hsu, Hiroyuki Hirashita, Yen-Hsing Lin +2
Dust emission from high-redshift galaxies gives us a clue to the origin and evolution of dust in the early Universe. Previous studies have shown that different sources of dust (ste…
The design and performance of the XL-Calibur anticoincidence shield
N. K. Iyer, M. Kiss, M. Pearce +31
The XL-Calibur balloon-borne hard X-ray polarimetry mission comprises a Compton-scattering polarimeter placed at the focal point of an X-ray mirror. The polarimeter is housed withi…
Narrow Fe-K Reverberation Mapping Unveils the Deactivated Broad-Line Region in a Changing-Look Active Galactic Nucleus
Hirofumi Noda, Taisei Mineta, Takeo Minezaki +11
"Changing-look active galactic nuclei" (CLAGNs) are known to change their apparent types between types 1 and 2, usually accompanied by a drastic change in their luminosity on times…
Non-charge-transfer origin of Tc Enhancement in a Surface Superconductor Si(111)-(root7xroot3)-In with Adsorbed Organic Molecules
Kenta Yokota, Shunsuke Inagaki, Wenxuan Qian +5
The effects of adsorption of Zn-phthalocyanine (ZnPc) molecules on the superconductivity of the Si(111)-(root7xroot3)-In surface are studied through transport measurements under ul…
Exotic properties of N^*(1895) and its impact on photoproduction of light hyperons
K. P. Khemchandani, A. Martinez Torres, Sang-Ho Kim +2
In this work, we outline the findings of our recent study of the properties of and its consequential impacts on the cross sections of the photoproduction of .…
Photo-induced nonlinear band shift and valence transition in SmS
Yitong Chen, Takuto Nakamura, Hiroshi Watanabe +12
The photo-induced band structure variation of a rare-earth-based semiconductor, samarium monosulfide (SmS), was investigated using high-harmonic-generation laser-based time-resolve…
Microscopic study of the deformed neutron halo of 31Ne
R. Takatsu, Y. Suzuki, W. Horiuchi +1
The properties of the deformed halo of 31Ne were discussed using the antisymmetrized molecular dynamics plus resonating group method (AMD+RGM). The AMD+RGM calculations describe a…
Superconductivity in a Magnetic Rashba Semimetal EuAuBi
Hidefumi Takahashi, Kazuto Akiba, Masayuki Takahashi +4
We report the observation of superconductivity with multiple magnetic ordering and Rashba-type spin-orbit coupling in a layered polar semimetal EuAuBi. Magnetic transition is obser…
Electroweak baryogenesis in the three-loop neutrino mass model with dark matter
Mayumi Aoki, Kazuki Enomoto, Shinya Kanemura
Baryon asymmetry of the Universe is evaluated in the model originally proposed in Phys. Rev. Lett. 102 (2009) 051805, where Majorana masses of neutrinos are generated via three-loo…
Neural Structure Fields with Application to Crystal Structure Autoencoders
Naoya Chiba, Yuta Suzuki, Tatsunori Taniai +4
Representing crystal structures of materials to facilitate determining them via neural networks is crucial for enabling machine-learning applications involving crystal structure es…
Star Formation and Chemical Enrichment in Protoclusters
Keita Fukushima, Kentaro Nagamine, Ikkoh Shimizu
We examine star formation and chemical enrichment in protoclusters (PCs) using cosmological zoom-in hydrodynamic simulations. We find that the total star formation rate (SFR) in al…
Hyperbolicity and fundamental groups of complex quasi-projective varieties
Benoit Cadorel, Ya Deng, Katsutoshi Yamanoi
This paper investigates the relationship between the hyperbolicity of complex quasi-projective varieties and the (topological) fundamental group in the presence of a l…