Search Results - "Porth, O."

Three-dimensional structure of relativistic jet formation by Porth, O.

“…Using high-resolution adaptive mesh refinement simulations in 3D, we investigate the formation of relativistic jets from rotating magnetospheres. Here, we…”
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Flares in the Galactic Centre – I. Orbiting flux tubes in magnetically arrested black hole accretion discs by Porth, O, Mizuno, Y, Younsi, Z, Fromm, C M

“…ABSTRACT Recent observations of Sgr A* by the GRAVITY instrument have astrometrically tracked infrared (IR) flares at distances of ∼10 gravitational radii…”
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Formation of Magnetically Truncated Accretion Disks in 3D Radiation-transport Two-temperature GRMHD Simulations by Liska, M. T. P., Musoke, G., Tchekhovskoy, A., Porth, O., Beloborodov, A. M.

“…Abstract Multiwavelength observations suggest that the accretion disk in the hard and intermediate states of X-ray binaries (XRBs) and active galactic nucleus…”
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Diffusion in pulsar wind nebulae: an investigation using magnetohydrodynamic and particle transport models by Porth, O., Vorster, M. J., Lyutikov, M., Engelbrecht, N. E.

“…We study the transport of high-energy particles in pulsar wind nebulae (PWN) using three-dimensional magnetohydrodynamic (MHD) and test-particle simulations,…”
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Current Sheet Alignment in Oblique Black Hole Magnetospheres: A Black Hole Pulsar? by Selvi, S., Porth, O., Ripperda, B., Sironi, L.

“…We study the magnetospheric evolution of a nonaccreting spinning black hole (BH) with an initially inclined split monopole magnetic field by means of 3D…”
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Radiation Transport Two-temperature GRMHD Simulations of Warped Accretion Disks by Liska, M. T. P., Kaaz, N., Musoke, G., Tchekhovskoy, A., Porth, O.

“…Abstract In many black hole (BH) systems, the accretion disk is expected to be misaligned with respect to the BH spin axis. If the scale height of the disk is…”
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Disc tearing leads to low and high frequency quasi-periodic oscillations in a GRMHD simulation of a thin accretion disc by Musoke, G, Liska, M, Porth, O, van der Klis, Michiel, Ingram, Adam

“…ABSTRACT Black hole X-ray binaries (BHXRBs) display a wide range of variability phenomena, from long duration spectral state changes to short-term broad-band…”
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Effective Resistivity in Relativistic Collisionless Reconnection by Selvi, S., Porth, O., Ripperda, B., Bacchini, F., Sironi, L., Keppens, R.

“…Abstract Magnetic reconnection can power spectacular high-energy astrophysical phenomena by producing nonthermal energy distributions in highly magnetized…”
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Synchrotron Polarization Signatures of Surface Waves in Supermassive Black Hole Jets by Davelaar, J., Ripperda, B., Sironi, L., Philippov, A. A., Olivares, H., Porth, O., Berg, B. van den, Bronzwaer, T., Chatterjee, K., Liska, M.

“…Abstract Supermassive black holes in active galactic nuclei are known to launch relativistic jets, which are observed across the entire electromagnetic…”
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Relativistic AGN jets – III. Synthesis of synchrotron emission from double-double radio galaxies by Walg, S, Achterberg, A, Markoff, S, Keppens, R, Porth, O

“…ABSTRACT The class of double-double radio galaxies (DDRGs) relates to episodic jet outbursts. How various regions and components add to the total intensity in…”
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Resolution analysis of magnetically arrested disc simulations by Salas, L D S, Musoke, G, Chatterjee, K, Markoff, S B, Porth, O, Liska, M T P, Ripperda, B

“…ABSTRACT Polarization measurements by the Event Horizon Telescope from M87* and Sgr A* suggest that there is a dynamically strong, ordered magnetic field,…”
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Relativistic resistive magnetohydrodynamic reconnection and plasmoid formation in merging flux tubes by Ripperda, B, Porth, O, Sironi, L, Keppens, R

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Erratum: Reconnection and particle acceleration in interacting flux ropes – II. 3D effects on test particles in magnetically dominated plasmas by Ripperda, B., Porth, O., Xia, C., Keppens, R.

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Relativistic AGN jets - II. Jet properties and mixing effects for episodic jet activity by Walg, S., Achterberg, A., Markoff, S., Keppens, R., Porth, O.

“…Various radio galaxies show signs of having gone through episodic jet outbursts in the past. An example is the class of double-double radio galaxies (DDRGs)…”
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Evolution of growing black holes in axisymmetric galaxy cores by Fiestas, J., Porth, O., Berczik, P., Spurzem, R.

“…N-body realizations of axisymmetric collisional galaxy cores (e.g. M32, M33, NGC 205, Milky Way) with embedded growing black holes are presented. Stars which…”
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Escape from the vicinity of fractal basin boundaries of a star cluster by Ernst, A., Just, A., Spurzem, R., Porth, O.

“…The dissolution process of star clusters is rather intricate for theory. We investigate it in the context of chaotic dynamics. We use the simple Plummer model…”
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Reconnection and particle acceleration in interacting flux ropes – I. Magnetohydrodynamics and test particles in 2.5D by Ripperda, B., Porth, O., Xia, C., Keppens, R.

“…Abstract Magnetic reconnection and non-thermal particle distributions associated with current-driven instabilities are investigated by means of resistive…”
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Relativistic resistive magnetohydrodynamic reconnection and plasmoid formation in merging flux tubes by Ripperda, B., Porth, O., Sironi, L., Keppens, R.

“…Herein we apply the general relativistic resistive magnetohydrodynamics code BHAC to perform a 2D study of the formation and evolution of a reconnection layer…”
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Reconnection and particle acceleration in interacting flux ropes – II. 3D effects on test particles in magnetically dominated plasmas by Ripperda, B., Porth, O., Xia, C., Keppens, R.

“…Abstract We analyse particle acceleration in explosive reconnection events in magnetically dominated proton–electron plasmas. Reconnection is driven by…”
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INTERACTING TILT AND KINK INSTABILITIES IN REPELLING CURRENT CHANNELS by Keppens, R, th, O, Xia, C

“…We present a numerical study in resistive magnetohydrodynamics (MHD) where the initial equilibrium configuration contains adjacent, oppositely directed,…”
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