38 citations · 74 across the 6 of their papers we have counts for
6 papers · 1 filter
The initial evolution of SN 2011dh: The importance of inhomogeneities
Claes-Ingvar Bjornsson
SN 2011dh is rather unique in that it offered detailed observations of the initial phase in the radio as well as optical regimes. This makes possible a comparison between models us…
The initial evolution of SN 1993J: Piston phase versus standard model
C. -I. Bjornsson
The evolution of SN 1993J is unlikely to be self-similar. Spatially resolved VLBI-observations show that the velocity of the outer rim of the radio emission region brakes at a few…
Atacama Compact Array Observations of the Pulsar-Wind Nebula of SNR 0540-69.3
P. Lundqvist, N. Lundqvist, C. Vlahakis +6
We present observations of the pulsar-wind nebula (PWN) region ofSNR 0540-69.3. The observations were made with the Atacama Compact Array (ACA) in Bands 4 and 6. We also add radio…
Circular polarisation from inhomogeneous synchrotron sources
C. -I. Bjornsson
Inhomogeneities can influence the polarisation emerging from a synchrotron source. However, it is shown that the frequency distribution of circular polarisation is only marginally…
The Deepest Radio Observations of Nearby Type IA Supernovae: Constraining Progenitor Types and Optimizing Future Surveys
Peter Lundqvist, Esha Kundu, Miguel A. Perez-Torres +7
We report deep radio observations of nearby Type Ia Supernovae (SNe Ia) with the electronic Multi-Element Radio Linked Interferometer Net-work (e-MERLIN), and the Australia Telesco…
Circular polarisation in compact radio sources: Constraints on particle acceleration and electron-positron pairs
Claes-I. Bjornsson
It is shown that the frequency distribution of the degree of circular polarisation for a homogeneous source is sensitive to the properties of the synchrotron emitting plasma. Most…