activity
19982022
most citedA change in the optical polarization associated with a gamma-ray flare in the blazar 3C 279

334 citations · 1.7k across the 39 of their papers we have counts for

collaborators

41 papers

astro-ph.HE2022★ 26 cited

Tell-Tale Spectral Signatures of MHD-driven Ultra-Fast Outflows in AGNs

Keigo Fukumura, Mauro Dadina, Gabriele Matzeu +3

We aim to explore spectral signatures of the predicted multi-ion UFOs in the broadband X-ray spectra of active galactic nuclei (AGNs) by exploiting an accretion disk wind model in…

astro-ph.HE2021★ 24 cited

Modeling Magnetic Disk-Wind State Transitions in Black Hole X-ray Binaries

Keigo Fukumura, Demosthenes Kazanas, Chris Shrader +3

We analyze three prototypical black hole (BH) X-ray binaries (XRBs), \4u1630, \gro1655\ and \h1743, in an effort to systematically understand the intrinsic state transition of the…

astro-ph.IM2019★ 6 cited

A Space-based All-sky MeV gamma-ray Survey with the Electron Tracking Compton Camera

Kenji Hamaguchi, Toru Tanimori, Atsushi Takada +8

A sensitive survey of the MeV gamma-ray sky is needed to understand important astrophysical problems such as gamma-ray bursts in the early universe, progenitors of Type Ia supernov…

astro-ph.HE2019

Neutrinos, Cosmic Rays and the MeV Band

R. Ojha, H. Zhang, M. Kadler +23

The possible association of the blazar TXS 0506+056 with a high-energy neutrino detected by IceCube holds the tantalizing potential to answer three astrophysical questions: 1. Wher…

astro-ph.HE2019★ 2 cited

Positron Annihilation in the Galaxy

Carolyn A. Kierans, John F. Beacom, Steve Boggs +27

The 511 keV line from positron annihilation in the Galaxy was the first -ray line detected to originate from outside our solar system. Going into the fifth decade since the disc…

astro-ph.HE2019★ 4 cited

High-Energy Polarimetry - a new window to probe extreme physics in AGN jets

B. Rani, H. Zhang, S. D. Hunter +31

The constantly improving sensitivity of ground-based and space-borne observatories has made possible the detection of high-energy emission (X-rays and gamma-rays) from several thou…