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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…
A VLA Study of High-redshift GRBs II - The Complex Radio Afterglow of GRB 140304A: Shell Collisions and Two Reverse Shocks
Tanmoy Laskar, Edo Berger, Raffaella Margutti +6
We present detailed multi-frequency, multi-epoch radio observations of GRB 140304A at from 1 to 86 GHz and 0.45 d to 89 d. The radio and mm data exhibit unusual multiple…
SN 2014C: VLBI Images of a Supernova Interacting with a Circumstellar Shell
Michael F. Bietenholz, A. Kamble, R. Margutti +2
We report on VLBI measurements of supernova 2014C at several epochs between and 1057 days after the explosion. SN 2014C was an unusual supernova that initially had Type I…
iPTF15eqv: Multi-wavelength Exposé of a Peculiar Calcium-rich Transient
D. Milisavljevic, D. Patnaude, J. Raymond +15
The progenitor systems of the class of "Ca-rich transients" is a key open issue in time domain astrophysics. These intriguing objects exhibit unusually strong calcium line emission…
Point-source and diffuse high-energy neutrino emission from Type IIn supernovae
Maria Petropoulou, Stefan Coenders, Georgios Vasilopoulos +2
Type IIn supernovae (SNe), a rare subclass of core collapse SNe, explode in dense circumstellar media that have been modified by the SNe progenitors at their last evolutionary stag…
Results from a systematic survey of X-ray emission from Hydrogen-poor Superluminous Supernovae
Raffaella Margutti, R. Chornock, B. D. Metzger +11
We present the results from a sensitive X-ray survey of 26 nearby hydrogen-poor superluminous supernovae (SLSNe-I) with Swift, Chandra and XMM. This dataset constrains the SLSN evo…
The Nearby Type Ibn Supernova 2015G: Signatures of Asymmetry and Progenitor Constraints
Isaac Shivvers, WeiKang Zheng, Schuyler D. Van Dyk +24
We present the results of an extensive observational campaign on the nearby Type Ibn SN 2015G, including data from radio through ultraviolet wavelengths. SN 2015G was asymmetric, s…