112 citations · 397 across the 13 of their papers we have counts for
13 papers
Mass-loading of bow shock pulsar wind nebulae
G. Morlino, M. Lyutikov, M. Vorster
We investigate the dynamics of bow shock nebulae created by pulsars moving supersonically through a partially ionized interstellar medium. A fraction of interstellar neutral hydrog…
Diffusion in Pulsar Wind Nebulae: An Investigation using Magnetohydrodynamic and Particle Transport Models
O. Porth, M. J. Vorster, M. Lyutikov +1
We study the transport of high-energy particles in pulsar wind nebulae (PWN) using three-dimensional MHD (see Porth et al. (2014) for details) and test-particle simulations, as wel…
Mass-loading of bow shock pulsar wind nebulae
G. Morlino, M. Lyutikov, M. J. Vorster
We investigate the dynamics of bow shock nebulae created by pulsars moving supersonically through a partially ionized interstellar medium. A fraction of interstellar neutral hydrog…
H.E.S.S. detection of TeV emission from the interaction region between the supernova remnant G349.7+0.2 and a molecular cloud
H. E. S. S. Collaboration, :, A. Abramowski +224
G349.7+0.2 is a young Galactic supernova remnant (SNR) located at the distance of 11.5 kpc and observed across the entire electromagnetic spectrum from radio to high energy (HE) Ga…
Search for dark matter annihilation signatures in H.E.S.S. observations of Dwarf Spheroidal Galaxies
H. E. S. S. Collaboration, :, A. Abramowski +229
Dwarf spheroidal galaxies of the Local Group are close satellites of the Milky Way characterized by a large mass-to-light ratio and are not expected to be the site of non-thermal h…
Long-term monitoring of PKS 2155304 with ATOM and H.E.S.S.: investigation of optical/-ray correlations in different spectral states
A. Abramowski, F. Aharonian, F. Ait Benkhali +225
In this paper we report on the analysis of all the available optical and very high-energy -ray (200 GeV) data for the BL Lac object PKS 2155304, collected simultaneously w…
Time-dependent Modeling of Pulsar Wind Nebulae
M. J. Vorster, O. Tibolla, S. E. S. Ferreira +1
A spatially independent model that calculates the time evolution of the electron spectrum in a spherically expanding pulsar wind nebula (PWN) is presented, allowing one to make bro…
Numerical simulations of composite supernova remnants for small pulsar wind nebulae
M. J. Vorster, S. E. S. Ferreira, O. C. de Jager +1
Composite supernova remnants consist of a pulsar wind nebula located inside a shell-type remnant. The presence of a shell has implications on the evolution of the nebula, although…
The Effect of Diffusion on the Particle Spectra in Pulsar Wind Nebulae
M. J. Vorster, H. Moraal
A possible way to calculate particle spectra as a function of position in pulsar wind nebulae is to solve a Fokker-Planck transport equation. This paper presents numerical solution…
Spatial Development of Energetic Particle Spectra in Pulsar Wind Nebulae
Michael Vorster, Harm Moraal
The evolution of the non-thermal emission emitted by pulsar wind nebulae is generally calculated using spatially-independent particle transport models. Although useful, these model…
Time-dependent modelling of pulsar wind nebulae
M. J. Vorster, O. Tibolla, S. E. S. Ferreira +1
A spatially-independent model that can be used to calculate the temporal evolution of the electron/ positron spectrum in a spherically expanding pulsar wind nebula is presented. Th…
Are most of the VHE gamma-ray unidentified sources relic PWNe?
Omar Tibolla, Michael Vorster, Sarah Kaufmann +2
The evolution of Pulsar Wind Nebulae (PWNe) plays a crucial role in interpreting the very high energy (VHE; > 10^11 eV) gamma-ray unidentified sources; and moreover it represents t…
Unidentified Galactic High-Energy Sources as Ancient Pulsar Wind Nebulae in the light of new high energy observations and the new code
O. Tibolla, M. Vorster, O. de Jager +5
In a Pulsar Wind Nebula (PWN), the lifetime of inverse Compton (IC) emitting electrons exceeds the lifetime of its progenitor pulsar (as well as its shell-type remnant), but it als…