53 citations · 325 across the 16 of their papers we have counts for
12 papers · 1 filter
The dense and non-homogeneous circumstellar medium revealed in radio wavelengths around the Type Ib SN 2019oys
Itai Sfaradi, Assaf Horesh, Jesper Sollerman +7
We present here broadband radio observations of the CSM interacting SN2019oys. SN2019oys was first detected in the optical and was classified as a Type Ib SN. Then, about $\sim 100…
Bursts from Space: MeerKAT - The first citizen science project dedicated to commensal radio transients
Alex Andersson, Chris Lintott, Rob Fender +40
The newest generation of radio telescopes are able to survey large areas with high sensitivity and cadence, producing data volumes that require new methods to better understand the…
Millihertz X-ray variability during the 2019 outburst of black hole candidate Swift~J1357.20933
Aru Beri, Vishal Gaur, Phil Charles +8
Swift J1357.20933 is a black-hole candidate X-ray transient, which underwent its third outburst in 2019, during which several multi-wavelength observations were carried out.~Her…
Evidence for a black hole spin--orbit misalignment in the X-ray binary Cyg X-1
Andrzej A. Zdziarski, Alexandra Veledina, Michal Szanecki +3
Recently, the accretion geometry of the black-hole X-ray binary Cyg X-1 was probed with the X-ray polarization. The position angle of the X-ray emitting flow was found to be aligne…
Precise Measurements of Self-absorbed Rising Reverse Shock Emission from Gamma-ray Burst 221009A
Joe S. Bright, Lauren Rhodes, Wael Farah +18
The deaths of massive stars are sometimes accompanied by the launch of highly relativistic and collimated jets. If the jet is pointed towards Earth, we observe a "prompt" gamma-ray…
Low-frequency radio observations of recurrent nova RS Ophiuchi with MeerKAT and LOFAR
Iris de Ruiter, Miriam M. Nyamai, Antonia Rowlinson +4
We report low-frequency radio observations of the 2021 outburst of the recurrent nova RS Ophiuchi. These observations include the lowest frequency observations of this system to da…
A Late-Time Radio Flare following a Possible Transition in Accretion State in the Tidal Disruption Event AT 2019azh
I. Sfaradi, A. Horesh, R. Fender +4
We report here radio follow-up observations of the optical Tidal Disruption Event (TDE) AT 2019azh. Previously reported X-ray observations of this TDE showed variability at early t…
Are Delayed Radio Flares Common in Tidal Disruption Events? The Case of the TDE iPTF16fnl
Assaf Horesh, Itai Sfaradi, Rob Fender +3
Radio emission from tidal disruption events (TDEs) originates from an interaction of an outflow with the super-massive black hole (SMBH) circum nuclear material (CNM). In turn, thi…
An early peak in the radio light curve of short-duration Gamma-Ray Burst 200826A
Lauren Rhodes, Rob Fender, David R. A. Williams +1
We present the results of radio observations from the eMERLIN telescope combined with X-ray data from Swift for the short-duration Gamma-ray burst (GRB) 200826A, located at a redsh…
Observations of a radio-bright, X-ray obscured GRS 1915+105
S. E. Motta, J. J. E. Kajava, M. Giustini +9
The Galactic black hole transient GRS1915+105 is famous for its markedly variable X-ray and radio behaviour, and for being the archetypal galactic source of relativistic jets. It e…
SN 2020bqj: a Type Ibn supernova with a long lasting peak plateau
E. C. Kool, E. Karamehmetoglu, J. Sollerman +31
Context: Type Ibn supernovae are a rare class of stripped envelope supernovae interacting with a helium-rich CSM. The majority of the SNe Ibn reported display a surprising homogene…
A non-equipartition shockwave traveling in a dense circumstellar environment around SN2020oi
Assaf Horesh, Itai Sfaradi, Mattias Ergon +34
We report the discovery and panchromatic followup observations of the young Type Ic supernova, SN2020oi, in M100, a grand design spiral galaxy at a mere distance of Mpc. We fo…