U
Ulf Torkelsson
Researcher at University of Gothenburg
Publications - 42
Citations - 1522
Ulf Torkelsson is an academic researcher from University of Gothenburg. The author has contributed to research in topics: Accretion (astrophysics) & Dynamo. The author has an hindex of 14, co-authored 42 publications receiving 1480 citations. Previous affiliations of Ulf Torkelsson include Lund University & Chalmers University of Technology.
Papers
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Dynamo-generated Turbulence and Large-Scale Magnetic Fields in a Keplerian Shear Flow
TL;DR: In this article, the nonlinear evolution of magnetized Keplerian shear fields is simulated in a local, three-dimensional model, including the eeects of compressibility and stratiication.
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VAST: An ASKAP Survey for Variables and Slow Transients
Tara Murphy,Shami Chatterjee,David L. Kaplan,Jay Banyer,Martin Bell,Hayley Bignall,Geoffrey C. Bower,R. A. Cameron,David Coward,James M. Cordes,Steve Croft,James Curran,S. G. Djorgovski,Sean Farrell,Dale A. Frail,Bryan Gaensler,Duncan K. Galloway,Bruce Gendre,Anne J. Green,Paul Hancock,Simon Johnston,Atish Kamble,Casey J. Law,T. Joseph W. Lazio,Kitty Lo,Jean-Pierre Macquart,Nanda Rea,Umaa Rebbapragada,Cormac Reynolds,Stuart D. Ryder,Brian P. Schmidt,Roberto Soria,Ingrid H. Stairs,Steven Tingay,Ulf Torkelsson,Kiri L. Wagstaff,Mark Walker,Randall B. Wayth,Peter K. G. Williams +38 more
TL;DR: In this article, an ASKAP survey for Variables and Slow Transients (VAST) is presented, which is based on a multi-tiered survey strategy to characterise the radio transient sky through detection and monitoring of transient and variable sources.
Journal ArticleDOI
The Disk Accretion Rate for Dynamo-generated Turbulence
TL;DR: In this paper, a modified shearing box approximation of the Shakura-Sunyaev viscosity parameter, αSS, is used to estimate the mass accretion rate, the heating rate and the horizontal components of the Maxwell and Reynolds stress tensors.
Journal ArticleDOI
VAST: An ASKAP Survey for Variables and Slow Transients
Tara Murphy,Shami Chatterjee,David L. Kaplan,Jay Banyer,Martin Bell,Hayley Bignall,Geoffrey C. Bower,R. A. Cameron,David Coward,James M. Cordes,Steve Croft,James Curran,S. G. Djorgovski,Sean Farrell,Dale A. Frail,Bryan Gaensler,Duncan K. Galloway,Bruce Gendre,Anne J. Green,Paul Hancock,Simon Johnston,Atish Kamble,Casey J. Law,T. Joseph W. Lazio,Kitty Lo,Jean-Pierre Macquart,Nanda Rea,Umaa Rebbapragada,Cormac Reynolds,Stuart D. Ryder,Brian P. Schmidt,Roberto Soria,Ingrid H. Stairs,Steven Tingay,Ulf Torkelsson,Kiri L. Wagstaff,Mark Walker,Randall B. Wayth,Peter K. G. Williams +38 more
TL;DR: In this paper, an ASKAP survey for Variables and Slow Transients (VAST) is presented, which is based on a multi-tiered survey strategy to characterise the radio transient sky through detection and monitoring of transient and variable sources.
Journal ArticleDOI
Epicyclic Oscillations of Fluid Bodies: Newtonian Nonslender Torus
Omer Blaes,Eva Šrámková,Marek A. Abramowicz,Marek A. Abramowicz,Włodek Kluźniak,Ulf Torkelsson +5 more
TL;DR: In this paper, the authors studied epicyclic oscillations of fluid tori around black holes and derived exact analytic expressions for their radial and vertical eigenfrequencies to second-order accuracy in the width of the torus.