HONEST Workshops: Hot Topics in High Energy Astrophysics

Session

PeV Accelerators: The traditional paradigm - SNRs as PeVatrons

29 Nov 2022, 09:00

Online

Conveners

PeV Accelerators: The traditional paradigm - SNRs as PeVatrons

• Jacco Vink (Anton Pannekoek Institute, GRAPPA, University of Amsterdam)
• Emma Maria de Ona Wilhelmi (Z_GA (Gammaastronomie))

1. Welcome

Emma Maria de Ona Wilhelmi (Z_GA (Gammaastronomie)), Ruben Lopez-Coto (IAA-CSIC)

29/11/2022, 09:00

2. Introduction to the motivations and topics of the workshop

Emma Maria de Ona Wilhelmi (Z_GA (Gammaastronomie)), Ruben Lopez-Coto (IAA-CSIC)

29/11/2022, 09:05

3. CRs around the knee - composition and latest results

Donghwa Kang (KIT)

29/11/2022, 09:20

5. The plasma physics of acceleration by shocks

Tony Bell (University of Oxford)

29/11/2022, 09:50

7. Maximum energy in SNR shocks

Brian Reville (Max Planck Institute for Nuclear Physics)

29/11/2022, 10:50

6. Interacting SNR blast waves in star forming region

Stefano Gabici

29/11/2022, 11:10

4. Supernova Remnants in the context of Cosmic PeVatrons

Samar Safi-Harb

29/11/2022, 11:30

24. A spatially resolved study of hard X-ray emission in Kepler's SNR: indications of different regimes of particle acceleration

Vincenzo Sapienza (University of Palermo)

Synchrotron X-ray emission in young supernova remnants (SNRs) is a powerful diagnostic tool to study the population of high energy electrons accelerated at the shock front.
We performed a spatially resolved spectral analysis of NuSTAR and XMM-Newton observations of the young Kepler's SNR, aiming to study in detail its non-thermal hard X-rays emission.
We selected a set of regions all around...

29. Gamma-ray emission from young supernova remnants in dense environments

Robert Brose (Dublin Institute for Advanced Studies)

Supernova remnants are known to accelerate cosmic rays from the detection of non-thermal emission of radio waves, X-rays, and gamma rays. The presence of cut-offs in the gamma-ray spectra of several young SNRs led to the idea that the highest energies might only be achieved during the very initial stages of a remnant’s evolution. Unfortunately, the gamma-ray luminosity is assumed to peak in...

30. Supernova remnant/starformation scenarios: why it is necessary to separate the energy requirement for Galactic cosmic rays from the PeVatron requirement

Jacco Vink (University of Amsterdam)

Supernova remnants (SNRs) have long been considered to be the dominant source of Galactic cosmic rays, which was then implied to mean that they provided most of the energy to power cosmic rays as well as that they are capable to accelerate protons up to the cosmic-ray knee. The lack of evidence for PeV cosmic rays inside SNRs, as well as theoretical considerations, has made this scenario...

25. The supernova remnant SN 1006 as a Galactic particle accelerator

Roberta Giuffrida (Università degli studi di Palermo - Osservatorio Astronomico di Palermo)

The origin of cosmic-rays is an open issue of high-energy astrophysics. Supernova remnants are expected to be the main source of Galactic cosmic rays up to energies of about 3 PeV, provided that they transfer a significant fraction of their kinetic energy to the particles (∼ 10%). In particular, the loss of such a large fraction of energy is predicted to alter the shock dynamics (shock...