414 citations · 6.2k across the 93 of their papers we have counts for
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Global 3D simulations of convection and dynamos in Red Giants
Carolina Ortiz-Rodríguez, Petri Käpylä, Juan Pablo Hidalgo +2
Understanding the internal dynamics of red giants is essential for studying angular momentum transport and magnetic field generation during stellar evolution. We present three-dime…
Effects of the centrifugal force in stellar dynamo simulations
Felipe H. Navarrete, Petri J. Käpylä, Dominik R. G. Schleicher +1
The centrifugal force is often omitted from simulations of stellar convection either for numerical reasons or because it is assumed to be weak compared to the gravitational force.…
Origin of eclipsing time variations in Post-Common-Envelope binaries: role of the centrifugal force
Felipe H. Navarrete, Dominik R. G. Schleicher, Petri J. Käpylä +2
Eclipsing time variations (ETVs) in post-common-envelope binaries (PCEBs) were proposed to be due to the time-varying component of the stellar gravitational quadrupole moment. This…
Origin of eclipsing time variations: Contributions of different modes of the dynamo-generated magnetic field
Felipe H. Navarrete, Petri J. Käpylä, Dominik R. G. Schleicher +2
The possibility to detect circumbinary planets and to study stellar magnetic fields through eclipsing time variations (ETVs) in binary stars has sparked an increase of interest in…
The physics of the Applegate mechanism: Eclipsing time variations from magnetic activity
M. Völschow, D. R. G. Schleicher, R. Banerjee +1
Since its proposal in 1992, the Applegate mechanism has been discussed as a potential intrinsical mechanism to explain transit timing variations in various kinds of close binary sy…
The origin of dust polarization in molecular outflows
S. Reissl, D. Seifried, S. Wolf +2
Aims: In this paper we present a case study to investigate conditions necessary to detect a characteristic magnetic field substructure embedded in a large-scale field. A helical ma…
Eclipsing time variations in close binary systems: Planetary hypothesis vs. Applegate mechanism
M. Völschow, D. R. G. Schleicher, V. Perdelwitz +1
The observed eclipsing time variations in post-common-envelope binaries (PCEBs) can be interpreted as potential evidence for massive Jupiter-like planets, or as a result of magneti…
Planet formation in post-common-envelope binaries
Dominik Schleicher, Stefan Dreizler, Marcel Völschow +2
To understand the evolution of planetary systems, it is important to investigate planets in highly evolved stellar systems, and to explore the implications of their observed proper…
Modeling jet and outflow feedback during star cluster formation
Christoph Federrath, Martin Schrön, Robi Banerjee +1
Powerful jets and outflows are launched from the protostellar disks around newborn stars. These outflows carry enough mass and momentum to transform the structure of their parent m…
The Earliest Stages of Star and Planet Formation: Core Collapse, and the Formation of Disks and Outflows
Zhi-Yun Li, Robi Banerjee, Ralph E. Pudritz +4
(Abridged) In this review we focus on the observations and theory of the formation of early disks and outflows, and their connections with the first phases of planet formation. Lar…
Morphologies of protostellar outflows: An ALMA view
Thomas Peters, Pamela D. Klaassen, Daniel Seifried +2
The formation of stars is usually accompanied by the launching of protostellar outflows. Observations with the Atacama Large Millimetre/sub-millimetre Array (ALMA) will soon revolu…
Are molecular outflows around high-mass stars driven by ionization feedback?
Thomas Peters, Pamela D. Klaassen, Mordecai-Mark Mac Low +2
The formation of massive stars exceeding 10 solar masses usually results in large-scale molecular outflows. Numerical simulations, including ionization, of the formation of such st…
Magnetic field amplification during gravitational collapse - Influence of initial conditions on dynamo evolution and saturation
Sharanya Sur, Christoph Federrath, Dominik R. G. Schleicher +2
We study the influence of initial conditions on the magnetic field amplification during the collapse of a magnetised gas cloud. We focus on the dependence of the growth and saturat…
Statistical analysis of the mass-to-flux ratio in turbulent cores: effects of magnetic field reversals and dynamo amplification
Erik Bertram, Christoph Federrath, Robi Banerjee +1
We study the mass-to-flux ratio (M/Φ) of clumps and cores in simulations of supersonic, magnetohydrodynamical turbulence for different initial magnetic field strengths. We investig…
Importance of the Initial Conditions for Star Formation - III: Statistical Properties of Embedded Protostellar Clusters
Philipp Girichidis, Christoph Federrath, Richard Allison +2
We investigate the formation of protostellar clusters during the collapse of dense molecular cloud cores with a focus on the evolution of potential and kinetic energy, the degree o…
Importance of the Initial Conditions for Star Formation - II. Fragmentation Induced Starvation and Accretion Shielding
Philipp Girichidis, Christoph Federrath, Robi Banerjee +1
We investigate the impact of different initial conditions for the initial density profile and the initial turbulence on the formation process of protostellar clusters. We study the…
The long-term evolution of warped, magnetised discs, and precessing outflows in collapsing pre-stellar cores
Dennis F. Duffin, Ralph E. Pudritz, Daniel Seifried +2
(abridged) The nature of early Class 0/I protostellar discs is not clearly understood. Early protostellar discs are needed to drive molecular outflows and jets observed in star for…
Radiative Feedback in Massive Star and Cluster Formation
Thomas Peters, Ralf S. Klessen, Mordecai-Mark Mac Low +1
Understanding the origin of high-mass stars is central to modern astrophysics. We shed light on this problem with simulations using a novel, adaptive-mesh, ray-tracing algorithm. T…
Comparing Numerical Methods for Isothermal Magnetized Supersonic Turbulence
Alexei G. Kritsuk, Aake Nordlund, David Collins +13
We employ simulations of supersonic super-Alfvenic turbulence decay as a benchmark test problem to assess and compare the performance of nine astrophysical MHD methods actively use…
A new Jeans resolution criterion for (M)HD simulations of self-gravitating gas: Application to magnetic field amplification by gravity-driven turbulence
Christoph Federrath, Sharanya Sur, Dominik R. G. Schleicher +2
Cosmic structure formation is characterized by the complex interplay between gravity, turbulence, and magnetic fields. The processes by which gravitational energy is converted into…
The Interplay of Magnetic Fields, Fragmentation and Ionization Feedback in High-Mass Star Formation
Thomas Peters, Robi Banerjee, Ralf S. Klessen +1
Massive stars disproportionately influence their surroundings. How they form has only started to become clear recently through radiation gas dynamical simulations. However, until n…
Importance of the Initial Conditions for Star Formation - I. Cloud Evolution and Morphology
Philipp Girichidis, Christoph Federrath, Robi Banerjee +1
We present a detailed parameter study of collapsing turbulent cloud cores, varying the initial density profile and the initial turbulent velocity field. We systematically investiga…
Modeling Collapse and Accretion in Turbulent Gas Clouds: Implementation and Comparison of Sink Particles in AMR and SPH
Christoph Federrath, Robi Banerjee, Paul C. Clark +1
We implemented sink particles in the adaptive mesh refinement (AMR) hydrodynamics code FLASH. Sink particles are created in regions of local gravitational collapse, and their traje…
H II regions: Witnesses to massive star formation
Thomas Peters, Robi Banerjee, Ralf S. Klessen +3
We describe the first three-dimensional simulation of the gravitational collapse of a massive, rotating molecular cloud that includes heating by both non-ionizing and ionizing radi…