6 papers
The 'Forgotten' Neutrons: Implications for the Propagation of High-Energy Cosmic Rays in Magnetized Astrophysical and Cosmological Structures
Ellis R. Owen, Kinwah Wu, Yoshiyuki Inoue +3
Cosmological filaments, galaxy clusters, and galaxies are magnetized reservoirs of cosmic rays (CRs). The exchange of CRs across these structures is usually modeled assuming that t…
The first proper motion measurement of the acceleration regions in the large-scale jets of SS 433 powering the W50 nebula
Naomi Tsuji, Yoshiyuki Inoue, Dmitry Khangulyan +10
We report on new Chandra ACIS-I observations of the X-ray knots located in the western and eastern lobes of W50 associated with the parsec-scale jets of the Galactic microquasar SS…
GeV-TeV Connections in Galaxies: Evolutionary Signatures from Pulsars in Globular Clusters
Ellis R. Owen, Yoshiyuki Inoue, Chung-Yue Hui +2
The dominant mechanisms underlying high-energy -ray emission from galaxies vary by galaxy type. In starbursts, a major contribution comes from neutral pion decay. This is drive…
The Moon as a Cosmic-Ray Spectrometer: Prospects for MeV Gamma-Ray Observations
Tatsuki Fujiwara, Ellis R. Owen, Yoshiyuki Inoue +10
The Moon is the closest celestial gamma-ray emitting object. Its gamma-ray emission arises from interactions between Galactic cosmic rays (CRs) and the lunar surface. While the lun…
High energy extragalactic multimessenger backgrounds from starburst and dead galaxies
Ellis R. Owen, Yoshiyuki Inoue, Tatsuki Fujiwara +1
Starburst galaxies are -ray sources. Canonically, their emission is driven by hadronic cosmic rays (CRs) interacting with interstellar gas, forming -rays via the decay of n…
Cosmic ray neutrons in magnetized astrophysical structures
Ellis R. Owen, Yoshiyuki Inoue, Tatsuki Fujiwara +2
Cosmic rays are often modeled as charged particles. This allows their non-ballistic propagation in magnetized structures to be captured. In certain situations, a neutral cosmic ray…