Zobrazeno 1 - 10
of 35
pro vyhledávání: '"Vorster, M J"'
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 well as a Fokker-Planck particle transport model. The latter includes rad
Externí odkaz:
http://arxiv.org/abs/1604.03352
We investigate the dynamics of bow shock nebulae created by pulsars moving supersonically through a partially ionized interstellar medium. A fraction of interstellar neutral hydrogen atoms penetrating into the tail region of a pulsar wind will underg
Externí odkaz:
http://arxiv.org/abs/1505.01712
Publikováno v:
The Astrophysical Journal, 773, 2013, 139
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 broadband predictions for the PWN's non-thermal radiation. The source spe
Externí odkaz:
http://arxiv.org/abs/1309.7137
Publikováno v:
Astronomy and Astrophysics, 551, 2013, A127
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 converse is generally not true. The purpose of this paper is two-f
Externí odkaz:
http://arxiv.org/abs/1309.6087
Autor:
Vorster, M. J., Moraal, H.
Publikováno v:
The Astrophysical Journal, 765, 2013, 30
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 solutions to the transport equation with the processes of convection, diffusio
Externí odkaz:
http://arxiv.org/abs/1309.5813
We present an X-ray analysis and a model of the nonthermal emission of the pulsar wind nebula (PWN) MSH15-52. We analyzed XMM-Newton data to obtain the spatially resolved spectral parameters around the pulsar PSRB1509-58. A steepening of the fitted p
Externí odkaz:
http://arxiv.org/abs/1005.0785
Autor:
Koegelenberg, C. F.N., van Zyl-Smit, R. N., Dheda, K., Allwood, B. W., Vorster, M. J., Plekker, D., Slebos, D. J., Klooster, K., Shah, P. L., Herth, F. J.F.
Publikováno v:
African Journal of Thoracic and Critical Care Medicine, 28(2), 75-81
Chronic obstructive pulmonary disease (COPD) remains one of the most common causes of morbidity and mortality in South Africa. Endoscopic lung volume reduction (ELVR) was first proposed by the South African Thoracic Society (SATS) for the treatment o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=narcis______::f4f98f32f507bdc581e888db4291989e
https://research.rug.nl/en/publications/7f042755-466a-446b-8848-abf12e6a19f5
https://research.rug.nl/en/publications/7f042755-466a-446b-8848-abf12e6a19f5
Publikováno v:
SAMJ: South African Medical Journal, Volume: 105, Issue: 10, Pages: 879-879, Published: OCT 2015
Endobronchial ultrasound-guided transbronchial needle aspiration (EBUS-TBNA) has become a standard procedure worldwide, used in conjunction with bronchoscopy to obtain biopsies for mediastinal disorders. A 67-year-old man with a 40 pack-year smoking
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______1575::fca553668415d9acc20fb6f02615e60b
http://www.scielo.org.za/scielo.php?script=sci_arttext&pid=S0256-95742015001000028&lng=en&tlng=en
http://www.scielo.org.za/scielo.php?script=sci_arttext&pid=S0256-95742015001000028&lng=en&tlng=en
Autor:
Koegelenberg, C F N, Theron, J, Bruwer, J W, Allwood, B W, Vorster, M J, von Groote-Bidlingmaier, F, Dheda, K
Publikováno v:
SAMJ: South African Medical Journal, Volume: 105, Issue: 9, Pages: 721-723, Published: SEP 2015
Therapeutic options in severe emphysema are limited. Endoscopic lung volume reduction (ELVR) refers to bronchoscopically inducing volume loss to improve pulmonary mechanics and compliance, thereby reducing the work of breathing. Globally, this techni
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______1575::4a856dc19f4027b583d04ae93230aafa
http://www.scielo.org.za/scielo.php?script=sci_arttext&pid=S0256-95742015000900013&lng=en&tlng=en
http://www.scielo.org.za/scielo.php?script=sci_arttext&pid=S0256-95742015000900013&lng=en&tlng=en
Autor:
Vorster, M J, Koegelenberg, C F N
Publikováno v:
SAMJ: South African Medical Journal, Volume: 105, Issue: 9, Pages: 791-791, Published: SEP 2015
Pathognomonic features of advanced emphysema include a markedly reduced alveolar surface area due to the formation of blebs and bullae and significantly reduced elastic recoil. The aim of lung volume reduction, which can be achieved by either surgery
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______1575::9d9625fccc8afe629cd1ab73b754c076
http://www.scielo.org.za/scielo.php?script=sci_arttext&pid=S0256-95742015000900035&lng=en&tlng=en
http://www.scielo.org.za/scielo.php?script=sci_arttext&pid=S0256-95742015000900035&lng=en&tlng=en