779 citations · 13.3k across the 229 of their papers we have counts for
25 papers · 1 filter
Magnetic fields in elliptical galaxies: an observational probe of the fluctuation dynamo action
Amit Seta, Luiz Felippe S. Rodrigues, Christoph Federrath +1
Fluctuation dynamos are thought to play an essential role in magnetized galaxy evolution, saturating within Gyr and thus potentially acting as seeds for large-scale dyna…
The sonic scale revealed by the world's largest supersonic turbulence simulation
Christoph Federrath, Ralf S. Klessen, Luigi Iapichino +1
Understanding the physics of turbulence is crucial for many applications, including weather, industry, and astrophysics. In the interstellar medium (ISM), supersonic turbulence pla…
Reconstructing three-dimensional densities from two-dimensional observations of molecular gas
Zipeng Hu, Mark R. Krumholz, Christoph Federrath +2
Star formation has long been known to be an inefficient process, in the sense that only a small fraction of the mass of any given gas cloud is converted to stars per c…
Shock-multicloud interactions in galactic outflows -- II. Radiative fractal clouds and cold gas thermodynamics
Wladimir Banda-Barragán, Marcus Brüggen, Volker Heesen +4
Galactic winds are crucial to the cosmic cycle of matter, transporting material out of the dense regions of galaxies. Observations show the coexistence of different temperature pha…
The Catalogue for Astrophysical Turbulence Simulations (CATS)
B. Burkhart, S. Appel, S. Bialy +18
Turbulence is a key process in many fields of astrophysics. Advances in numerical simulations of fluids over the last several decades have revolutionized our understanding of turbu…
On the compressive nature of turbulence driven by ionising feedback in the pillars of the Carina Nebula
Shyam H. Menon, Christoph Federrath, Pamela Klaassen +2
The ionizing radiation of massive stars sculpts the surrounding neutral gas into pillar-like structures. Direct signatures of star formation through outflows and jets are observed…
Structure and kinematics of shocked gas in Sgr B2: further evidence of a cloud-cloud collision from SiO emission maps
Jairo Armijos-Abendaño, Wladimir Banda-Barragán, Jesús Martín-Pintado +3
We present SiO J=2-1 maps of the Sgr B2 molecular cloud, which show shocked gas with a turbulent substructure comprising at least three cavities at velocities of [10,40] km s$^{-1}…
Turbulent density and pressure fluctuations in the stratified intracluster medium
Rajsekhar Mohapatra, Christoph Federrath, Prateek Sharma
Turbulent gas motions are observed in the intracluster medium (ICM). The ICM is density-stratified, with the gas density being highest at the centre of the cluster and decreasing r…
Seed magnetic fields in turbulent small-scale dynamos
Amit Seta, Christoph Federrath
Magnetic fields in galaxies and galaxy clusters are amplified from a very weak seed value to the observed strengths by the turbulent dynamo. The seed magnetic field can…
Shock-multicloud interactions in galactic outflows -- I. Cloud layers with log-normal density distributions
Wladimir Banda-Barragán, Marcus Brüggen, Christoph Federrath +3
We report three-dimensional hydrodynamical simulations of shocks () interacting with fractal multicloud layers. The evolution of shock-multicloud system…
High-resolution survey for planetary companions to young stars in the Taurus Molecular Cloud
A. L. Wallace, J. Kammerer, M. J. Ireland +6
Direct imaging in the infrared at the diffraction limit of large telescopes is a unique probe of the properties of young planetary systems. We survey 55 single class I and class II…
Implementation of stellar heating feedback in simulations of star cluster formation: effects on the initial mass function
Sajay Sunny Mathew, Christoph Federrath
Explaining the initial mass function (IMF) of stars is a long-standing problem in astrophysics. The number of complex mechanisms involved in the process of star cluster formation,…
Magnetic field fluctuations in anisotropic, supersonic turbulence
James R. Beattie, Christoph Federrath, Amit Seta
The rich structure that we observe in molecular clouds is due to the interplay between strong magnetic fields and supersonic (turbulent) velocity fluctuations. The velocity fluctua…
Magnetic field amplification in accretion discs around the first stars: implications for the primordial IMF
Piyush Sharda, Christoph Federrath, Mark R. Krumholz +1
Magnetic fields play an important role in the dynamics of present-day molecular clouds. Recent work has shown that magnetic fields are equally important for primordial clouds, whic…
The SAMI Galaxy Survey: Gas velocity dispersions in low- star-forming galaxies and the drivers of turbulence
Mathew R. Varidel, Scott M. Croom, Geraint F. Lewis +18
We infer the intrinsic ionised gas kinematics for 383 star-forming galaxies across a range of integrated star-formation rates (SFR M yr) at $z…
The Predicted Properties of Helium-Enriched Globular Cluster Progenitors at High Redshift
David M. Nataf, Shunsaku Horiuchi, Guglielmo Costa +5
Globular cluster progenitors may have been detected by \textit{HST}, and are predicted to be observable with \textit{JWST} and ground-based extremely-large telescopes with adaptive…
Quantifying the effects of spatial resolution and noise on galaxy metallicity gradients
Ayan Acharyya, Mark R. Krumholz, Christoph Federrath +3
Metallicity gradients are important diagnostics of galaxy evolution, because they record the history of events such as mergers, gas inflow and star-formation. However, the accuracy…
The dependence of episodic accretion on eccentricity during the formation of binary stars
R. Kuruwita, C. Federrath, T. Haugbølle
Aims: Our goal is to investigate how the strength of episodic accretion bursts depends on eccentricity. Methods: We investigate the binary trigger hypothesis in longer-period (>20y…
Spinning Bar and a Star-formation Inefficient Repertoire: Turbulence in Hickson Compact Group NGC7674
Diane M. Salim, Katherine Alatalo, Christoph Federrath +2
The physics regulating star formation (SF) in Hickson Compact Groups (HCG) has thus far been difficult to describe, due to their unique kinematic properties. In this study we expan…
On the turbulence driving mode of expanding HII regions
Shyam H. Menon, Christoph Federrath, Rolf Kuiper
We investigate the turbulence driving mode of ionizing radiation from massive stars on the surrounding interstellar medium (ISM). We run hydrodynamical simulations of a turbulent c…
Honing and proofing Astrophysical codes on the road to Exascale. Experiences from code modernization on many-core systems
Salvatore Cielo, Luigi Iapichino, Fabio Baruffa +2
The complexity of modern and upcoming computing architectures poses severe challenges for code developers and application specialists, and forces them to expose the highest possibl…
The Launching of Cold Clouds by Galaxy Outflows III: The Influence of Magnetic Fields
J'Neil Cottle, Evan Scannapieco, Marcus Bruggen +2
Motivated by observations of outflowing galaxies, we investigate the combined impact of magnetic fields and radiative cooling on the evolution of cold clouds embedded in a hot wind…
Star formation in cloud cores -- simulations and observations of dense molecular cores and the formation of solar mass stars
Christoph Federrath
Star formation is inefficient. Recent advances in numerical simulations and theoretical models of molecular clouds show that the combined effects of interstellar turbulence, magnet…
The importance of magnetic fields for the initial mass function of the first stars
Piyush Sharda, Christoph Federrath, Mark R. Krumholz
Magnetic fields play an important role for the formation of stars in both local and high-redshift galaxies. Recent studies of dynamo amplification in the first dark matter haloes s…