96 citations · 304 across the 15 of their papers we have counts for
15 papers
Where is the End of the Cosmic-Ray Electron Spectrum?
Takahiro Sudoh, John F. Beacom
Detecting the end of the cosmic-ray (CR) electron spectrum would provide important new insights. While we know that Milky Way sources can accelerate electrons up to at least …
Identifying Extended PeVatron Sources via Neutrino Shower Detection
Takahiro Sudoh, John F. Beacom
Identifying the Milky Way's very high energy hadronic cosmic-ray accelerators -- the PeVatrons -- is a critical problem. While gamma-ray observations reveal promising candidate sou…
Where are Milky Way's Hadronic PeVatrons?
Takahiro Sudoh, John F. Beacom
Observations of the Milky Way at TeV-PeV energies reveal a bright diffuse flux of hadronic cosmic rays and also bright point sources of gamma rays. If the gamma-ray sources are had…
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…
Magnetically Arrested Disks in Quiescent Black-Hole Binaries: Formation Scenario, Observable Signatures, and Potential PeVatrons
Shigeo S. Kimura, Takahiro Sudoh, Kazumi Kashiyama +1
We propose magnetically arrested disks (MADs) in quiescent black-hole (BH) binaries as the origin of the multiwavelength emission, and argue that this class of sources can dominate…
Prospects of newly detecting nearby star-forming galaxies by the Cherenkov Telescope Array
Naoya Shimono, Tomonori Totani, Takahiro Sudoh
Prospects of the Cherenkov Telescope Array (CTA) for the study of very high energy gamma-ray emission from nearby star-forming galaxies are investigated. In the previous work, we c…
The Highest Energy HAWC Sources are Likely Leptonic and Powered by Pulsars
Takahiro Sudoh, Tim Linden, Dan Hooper
The HAWC Collaboration has observed gamma rays at energies above 56 TeV from a collection of nine sources. It has been suggested that this emission could be hadronic in nature, req…
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…
Millisecond Pulsars Modify the Radio-SFR Correlation in Quiescent Galaxies
Takahiro Sudoh, Tim Linden, John F. Beacom
The observed correlation between the far-infrared and radio luminosities of galaxies illustrates the close connection between star formation and cosmic-ray production. Intriguingly…
Multi-wavelength Emission from Galactic Jets: the Case of the Microquasar SS433
Takahiro Sudoh, Yoshiyuki Inoue, Dmitry Khangulyan
SS433 is a Galactic microquasar with powerful jets, where very-high-energy particles are produced. We study particle acceleration in the jets of SS433 in the light of the recent mu…
Pulsars in a Bubble? Following Electron Diffusion in the Galaxy with TeV Gamma Rays
H. Fleischhack, A. Albert, C. Alvarez +32
TeV Halos, extended regions of TeV gamma-ray emission around middle-aged pulsars, have recently been established as a new source class in gamma-ray astronomy. These halos have been…
TeV Halos are Everywhere: Prospects for New Discoveries
Takahiro Sudoh, Tim Linden, John F. Beacom
Milagro and HAWC have detected extended TeV gamma-ray emission around nearby pulsar wind nebulae (PWNe). Building on these discoveries, Linden et al. [1] identified a new source cl…
Lethal radiation from nearby supernovae helps to explain the small cosmological constant
Tomonori Totani, Hidetoshi Omiya, Takahiro Sudoh +2
The observed value of the cosmological constant is extremely smaller than theoretical expectations, and the anthropic argument has been proposed as a solution to…
High-energy gamma-ray and neutrino production in star-forming galaxies across cosmic time: Difficulties in explaining the IceCube data
Takahiro Sudoh, Tomonori Totani, Norita Kawanaka
We present a new theoretical modeling to predict luminosity and spectrum of gamma-ray and neutrino emission of a star-forming galaxy, from star formation rate (), gas mass ($M_{…
Testing anthropic reasoning for the cosmological constant with a realistic galaxy formation model
Takahiro Sudoh, Tomonori Totani, Ryu Makiya +1
The anthropic principle is one of the possible explanations for the cosmological constant () problem. In previous studies, a dark halo mass threshold comparable with our Galaxy…