902 citations · 6.4k across the 108 of their papers we have counts for
110 papers
Cosmic ray processes in galactic ecosystems
Ellis R. Owen, Kinwah Wu, Yoshiyuki Inoue +2
Galaxy evolution is an important topic, and our physical understanding must be complete to establish a correct picture. This includes a thorough treatment of feedback. The effects…
The Centimeter to Submillimeter Broad Band Radio Spectrum of the Central Compact Component in A Nearby Type-II Seyfert Galaxy NGC 1068
Tomonari Michiyama, Yoshiyuki Inoue, Akihiro Doi
We analyze all the available Atacama Large Millimeter / submillimeter Array archival data of the nearby Type-II Seyfert galaxy NGC 1068, including new 100 GHz data with the angular…
The origin of MeV gamma-ray diffuse emission from the inner Galactic region
Naomi Tsuji, Yoshiyuki Inoue, Hiroki Yoneda +2
The origin of the inner Galactic emission, measured by COMPTEL with a flux of MeV cm s sr in the 1-30 MeV range, has remained unsettled since…
Gamma-Ray Emission in the Seyfert Galaxy NGC 4151: Investigating the Role of Jet and Coronal Activities
Yoshiyuki Inoue, Dmitry Khangulyan
NGC 4151, a nearby Seyfert galaxy, has recently been reported to emit gamma rays in the GeV range, posing an intriguing astrophysical mystery. The star formation rate of NGC 4151 i…
On the Zeeman Effect in Magnetically-Arrested Disks
Yoshiyuki Inoue
Magnetically arrested disk (MAD) has been argued as the key accretion phase to realize the formation of relativistic jets. However, due to the lack of magnetic field measurements o…
MeV Gamma-Ray Source Contribution to the Inner Galactic Diffuse Emission
Naomi Tsuji, Yoshiyuki Inoue, Hiroki Yoneda +2
The origin of the inner Galactic emission, measured by COMPTEL with a flux of in the 1-30 MeV energy range from the…
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…
ALMA detection of parsec-scale blobs at the head of kiloparsec-scale jet in the nearby Seyfert galaxy NGC 1068
Tomonari Michiyama, Yoshiyuki Inoue, Akihiro Doi +1
We present Atacama Large Millimeter/submillimeter Array observations at GHz with arcsec (3 pc) resolution of the kiloparsec-scale jet seen in the nearby Seyfert…
Spatially resolved study of the SS 433/W50 west region with Chandra: X-ray structure and spectral variation of non-thermal emission
Kazuho Kayama, Takaaki Tanaka, Hiroyuki Uchida +6
The X-ray binary SS 433, embedded in the W50 nebula (or supernova remnant W50), shows bipolar jets that are ejected with mildly relativistic velocities, and extend toward the east…
Event reconstruction of Compton telescopes using a multi-task neural network
Satoshi Takashima, Hirokazu Odaka, Hiroki Yoneda +4
We have developed a neural network model to perform event reconstruction of Compton telescopes. This model reconstructs events that consist of three or more interactions in a detec…
High energy emission component, population, and contribution to the extragalactic gamma-ray background of gamma-ray emitting radio galaxies
Yasushi Fukazawa, Hiroto Matake, Taishu Kayanoki +2
In this study, we systematically studied the X-ray to GeV gamma-ray spectra of 61 {\it Fermi} Large Area Telescope (LAT) detected radio galaxies. We found an anticorrelation betwee…
Impacts of Jets and Winds From Primordial Black Holes
Volodymyr Takhistov, Philip Lu, Kohta Murase +2
Primordial black holes (PBHs) formed in the early Universe constitute an attractive candidate for dark matter. Within the gaseous environment of the interstellar medium, PBHs with…
A Fundamental Plane in X-ray Binary Activity of External Galaxies
Yoshiyuki Inoue, Kiyoto Yabe, Yoshihiro Ueda
We construct a new catalog of extragalactic X-ray binaries (XRBs) by matching the latest Chandra source catalog with local galaxy catalogs. Our XRB catalog contains 4430 XRBs hoste…
Reconstruction of multiple Compton scattering events in MeV gamma-ray Compton telescopes towards GRAMS: the physics-based probabilistic model
Hiroki Yoneda, Hirokazu Odaka, Yuto Ichinohe +19
Aimed at progress in mega-electron volt (MeV) gamma-ray astronomy, which has not yet been well-explored, Compton telescope missions with a variety of detector concepts have been pr…
Spatial variations of magnetic field along active galactic nuclei jets on sub-pc to Mpc scales
Soichiro Ito, Yoshiyuki Inoue, Jun Kataoka
We report the systematic analysis of knots, hotspots, and lobes in 57 active galactic nuclei (AGNs) to investigate the variation of the magnetic field along with the jet from the s…
Cross-match between the latest Swift-BAT and Fermi-LAT catalogs
Naomi Tsuji, Hiroki Yoneda, Yoshiyuki Inoue +4
We report the results of a cross-match study between the hard X-ray and GeV gamma-ray catalogs, by making use of the latest 105-month Swift-BAT and 10-yr Fermi-LAT catalogs, respec…
Gamma-ray and Neutrino Signals from Accretion Disk Coronae of Active Galactic Nuclei
Yoshiyuki Inoue, Dmitry Khangulyan, Akihiro Doi
To explain X-ray spectra of active galactic nuclei (AGN), non-thermal activity in AGN coronae such as pair cascade models has been extensively discussed in the past literature. Alt…
Interstellar Gas Heating by Primordial Black Holes
Volodymyr Takhistov, Philip Lu, Graciela B. Gelmini +3
Interstellar gas heating is a powerful cosmology-independent observable for exploring the parameter space of primordial black holes (PBHs) formed in the early Universe that could c…
Origin of Galactic Spurs: New Insight from Radio/X-ray All-sky Maps
Jun Kataoka, Marino Yamamoto, Yuki Nakamura +5
In this study, we analyze giant Galactic spurs seen in both radio and X-ray all-sky maps to reveal their origins. We discuss two types of giant spurs: one is the brightest diffuse…
Follow-up Observations for IceCube-170922A: Detection of Rapid Near-Infrared Variability and Intensive Monitoring of TXS 0506+056
Tomoki Morokuma, Yousuke Utsumi, Kouji Ohta +35
We present our follow-up observations to search for an electromagnetic counterpart of the IceCube high-energy neutrino, IceCube-170922A. Monitoring observations of a likely counter…
Snowmass 2021 Letter of Interest: The GRAMS Project: MeV Gamma-Ray Observations and Antimatter-Based Dark Matter Searches
Tsuguo Aramaki, Jonathan Asaadi, Yuto Ichinohe +10
The Gamma-Ray and AntiMatter Survey (GRAMS) project is a proposed next-generation balloon/satellite mission targeting both MeV gamma-ray observations and antimatter-based dark matt…
Blazar Radio and Optical Survey (BROS): A catalog of blazar candidates showing flat radio spectrum and their optical identification in Pan-STARRS1 Surveys
Ryosuke Itoh, Yousuke Utsumi, Yoshiyuki Inoue +5
Utilizing the latest and the most sensitive radio and optical catalogs, we completed a new blazar candidate catalog, Blazar Radio and Optical Survey (BROS), which includes 88,211 s…
Constraining Primordial Black Holes with Dwarf Galaxy Heating
Philip Lu, Volodymyr Takhistov, Graciela B. Gelmini +3
Black holes formed in the early universe, prior to the formation of stars, can exist as dark matter and also contribute to the black hole merger events observed in gravitational wa…
Physical Conditions and Particle Acceleration in the Kiloparsec Jet of Centaurus A
Takahiro Sudoh, Dmitry Khangulyan, Yoshiyuki Inoue
The non-thermal emission from the kiloparsec-scale jet of Centaurus A exhibits two notable features, bright diffuse emission and many compact knots, which have been intensively stu…