7 papers
Interacting supernovae and where to find them
Robert Brose, Iurii Sushch, Jonathan Mackey +1
Early interaction of supernova blast waves with CSM has the potential to accelerate particles to PeV energies, although this has not yet been detected. Current models for this inte…
H.E.S.S. observations of SN 2024ggi
Jowita Borowska-Naguszewska, Robert Brose, Bernardo Cornejo +3
Supernova (SN) explosions interacting with dense circumstellar medium are considered to be very promising sites for efficient cosmic-ray (CR) acceleration and subsequent emission o…
Teleios (G305.4-2.2) -- the mystery of a perfectly shaped new Galactic supernova remnant
Miroslav D. Filipovic, Zachary J. Smeaton, Roland Kothes +35
We present the serendipitous radio-continuum discovery of a likely Galactic supernova remnant (SNR) G305.4-2.2. This object displays a remarkable circular symmetry in shape, making…
Supernova remnants in super bubbles as cosmic ray accelerators
Iurii Sushch, Pasquale Blasi, Robert Brose
Supernova remnants (SNRs) are often considered as the main sites of acceleration of cosmic rays in our Galaxy, possibly up to the knee. However, their ability to accelerate particl…
How to turn a Supernova into a PeVatron
Robert Brose, Iurii Sushch, Jonathan Mackey
Context. It is important to determine which Galactic cosmic-ray sources can accelerate particles to the knee of the cosmic ray spectrum at a few PeV, and in particular whether supe…
Thermal emission from bow shocks. III. Variable diffuse X-ray emission from stellar-wind bow shocks driven by dynamical instabilities
Jonathan Mackey, Arun Mathew, Ahmad A. Ali +5
X-ray emission from wind-driven bow shocks is both difficult to measure and predict, but may give important insights into the energy budget of the hot phase of the ISM by quantifyi…