105 citations · 651 across the 36 of their papers we have counts for
11 papers · 1 filter
Late-time radio brightening and emergence of a radio jet in the changing-look AGN 1ES 1927+654
Eileen T. Meyer, Sibasish Laha, Onic I. Shuvo +32
We present multi-frequency (5-345 GHz) and multi-resolution radio observations of 1ES 1927+654, widely considered one of the most unusual and extreme changing-look active galactic…
Minor Flares on Cygnus X-3 -- VLBI Prospects
Ralph E. Spencer, Justin D. Bray, David A. Green +1
The cm-wavelength radio flares on Cygnus X-3 have been studied for many years. Our recent paper (Spencer et al., 2022) looked again at the minor flares (flux density S of a few 100…
An updated estimate of the cosmic radio background and implications for ultra-high-energy photon propagation
I. C. Niţu, H. T. J. Bevins, J. D. Bray +1
We present an updated estimate of the cosmic radio background (CRB) and the corresponding attenuation lengths for ultra-high energy photons. This new estimate provides associated u…
UHECR propagation from Centaurus A
Sarka Wykes, Andrew M. Taylor, Justin D. Bray +2
In the light of the recently predicted isotopic composition of the kpc-scale jet in Centaurus A, we re-investigate whether this source could be responsible for some of the ultra-hi…
A limit on the ultra-high-energy neutrino flux from lunar observations with the Parkes radio telescope
J. D. Bray, R. D. Ekers, P. Roberts +6
We report a limit on the ultra-high-energy neutrino flux based on a non-detection of radio pulses from neutrino-initiated particle cascades in the Moon, in observations with the Pa…
Mass entrainment and turbulence-driven acceleration of ultra-high energy cosmic rays in Centaurus A
Sarka Wykes, Judith H. Croston, Martin J. Hardcastle +8
Observations of the FR I radio galaxy Centaurus A in radio, X-ray and gamma-ray bands provide evidence for lepton acceleration up to several TeV and clues about hadron acceleration…