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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…
Long-term radio and X-ray evolution of the tidal disruption event ASASSN-14li
J. S. Bright, R. P. Fender, S. E. Motta +12
We report on late time radio and X-ray observations of the tidal disruption event candidate ASASSN-14li, covering the first 1000 days of the decay phase. For the first da…
ThunderKAT: The MeerKAT Large Survey Project for Image-Plane Radio Transients
R. Fender, P. A. Woudt, R. Armstrong +59
ThunderKAT is the image-plane transients programme for MeerKAT. The goal as outlined in 2010, and still today, is to find, identify and understand high-energy astrophysical process…
Up and Down the Black Hole Radio/X-ray Correlation: the 2017 mini-outbursts from Swift J1753.5-0127
R. M. Plotkin, J. Bright, J. C. A. Miller-Jones +20
The candidate black hole X-ray binary Swift J1753.5-0127 faded to quiescence in 2016 November, after a prolonged outburst that was discovered in 2005. Nearly three months later the…
A Multi-telescope Campaign on FRB 121102: Implications for the FRB Population
C. J. Law, M. W. Abruzzo, C. G. Bassa +33
We present results of the coordinated observing campaign that made the first subarcsecond localization of a Fast Radio Burst, FRB 121102. During this campaign, we made the first si…
Flares, wind and nebulae: the 2015 December mini-outburst of V404 Cygni
T. Muñoz-Darias, J. Casares, D. Mata Sánchez +22
After more than 26 years in quiescence, the black hole transient V404 Cyg went into a luminous outburst in June 2015, and additional activity was detected in late December of the s…
A large light-mass component of cosmic rays at 10^{17} - 10^{17.5} eV from radio observations
S. Buitink, A. Corstanje, H. Falcke +101
Cosmic rays are the highest energy particles found in nature. Measurements of the mass composition of cosmic rays between 10^{17} eV and 10^{18} eV are essential to understand whet…
Probing Atmospheric Electric Fields in Thunderstorms through Radio Emission from Cosmic-Ray-Induced Air Showers
P. Schellart, T. N. G. Trinh, S. Buitink +71
We present measurements of radio emission from cosmic ray air showers that took place during thunderstorms. The intensity and polarization patterns of these air showers are radical…
Probing the Bright Radio Flare and Afterglow of GRB 130427A with the Arcminute Microkelvin Imager
G. E. Anderson, A. J. van der Horst, T. D. Staley +7
We present one of the best sampled early time light curves of a gamma-ray burst (GRB) at radio wavelengths. Using the Arcminute Mircrokelvin Imager (AMI) we observed GRB 130427A at…
Bright radio emission from an ultraluminous stellar-mass microquasar in M31
Matthew J. Middleton, James C. A. Miller-Jones, Sera Markoff +34
A subset of ultraluminous X-ray sources (those with luminosities < 10^40 erg/s) are thought to be powered by the accretion of gas onto black holes with masses of ~5-20 M_solar, pro…
Automated rapid follow-up of Swift GRBs with AMI-LA
T. D. Staley, D. J. Titterington, R. P. Fender +6
We present 15-GHz follow-up radio observations of eleven Swift gamma-ray burst (GRB) sources, obtained with the Arcminute Microkelvin Imager Large Array (AMI-LA). The initial follo…