Search Results - "Pfrommer, C."
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Cosmic-ray hydrodynamics: Alfvén-wave regulated transport of cosmic rays
Published in Monthly notices of the Royal Astronomical Society (21-05-2019)“…ABSTRACT Star formation in galaxies appears to be self-regulated by energetic feedback processes. Among the most promising agents of feedback are cosmic rays…”
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Simulations of the dynamics of magnetized jets and cosmic rays in galaxy clusters
Published in Monthly notices of the Royal Astronomical Society (11-12-2018)Get full text
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Comparing different closure relations for cosmic ray hydrodynamics
Published in Monthly notices of the Royal Astronomical Society (01-02-2022)“…ABSTRACT Cosmic ray (CR) hydrodynamics is a (re-)emerging field of high interest due to the importance of CRs for the dynamical evolution of the interstellar,…”
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Simulating cosmic ray physics on a moving mesh
Published in Monthly notices of the Royal Astronomical Society (11-03-2017)“…We discuss new methods to integrate the cosmic ray (CR) evolution equations coupled to magnetohydrodynamics on an unstructured moving mesh, as realized in the…”
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A finite volume method for two-moment cosmic ray hydrodynamics on a moving mesh
Published in Monthly notices of the Royal Astronomical Society (01-05-2021)“…ABSTRACT We present a new numerical algorithm to solve the recently derived equations of two-moment cosmic ray hydrodynamics (CRHD). The algorithm is…”
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Draping of Cluster Magnetic Fields over Bullets and Bubbles—Morphology and Dynamic Effects
Published in The Astrophysical journal (20-04-2008)“…High-resolution X-ray observations have revealed cavities and 'cold fronts' with sharp edges in temperature and density within galaxy clusters. Their presence…”
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Cosmic-ray-driven galactic winds: transport modes of cosmic rays and Alfvén-wave dark regions
Published in Monthly notices of the Royal Astronomical Society (01-05-2023)“…ABSTRACT Feedback mediated by cosmic rays (CRs) is an important process in galaxy formation. Because CRs are long-lived and because they are transported along…”
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ON THE CLUSTER PHYSICS OF SUNYAEV―ZEL'DOVICH AND X-RAY SURVEYS. II. DECONSTRUCTING THE THERMAL SZ POWER SPECTRUM
Published in The Astrophysical journal (20-10-2012)“…Secondary anisotropies in the cosmic microwave background are a treasure-trove of cosmological information. Interpreting current experiments probing them are…”
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The effect of cosmic ray acceleration on supernova blast wave dynamics
Published in Monthly notices of the Royal Astronomical Society (21-08-2018)“…ABSTRACT Non-relativistic shocks accelerate ions to highly relativistic energies provided that the orientation of the magnetic field is closely aligned with…”
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Galactic winds driven by cosmic ray streaming
Published in Monthly notices of the Royal Astronomical Society (01-07-2012)“…Galactic winds are observed in many spiral galaxies with sizes from dwarfs up to the Milky Way, and they sometimes carry a mass in excess of that of newly…”
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ON THE CLUSTER PHYSICS OF SUNYAEV―ZEL'DOVICH AND X-RAY SURVEYS. I. THE INFLUENCE OF FEEDBACK, NON-THERMAL PRESSURE, AND CLUSTER SHAPES ON Y―M SCALING RELATIONS
Published in The Astrophysical journal (20-10-2012)“…The utility of large Sunyaev-Zel'dovich (SZ) surveys for determining cosmological parameters from cluster abundances is limited by the theoretical…”
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Self-regulated AGN feedback of light jets in cool-core galaxy clusters
Published in Monthly notices of the Royal Astronomical Society (01-01-2023)“…ABSTRACT Heating from active galactic nuclei (AGNs) is thought to stabilize cool-core clusters, limiting star formation and cooling flows. We employ radiative…”
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ON THE CLUSTER PHYSICS OF SUNYAEV-ZEL'DOVICH AND X-RAY SURVEYS. III. MEASUREMENT BIASES AND COSMOLOGICAL EVOLUTION OF GAS AND STELLAR MASS FRACTIONS
Published in The Astrophysical journal (10-11-2013)“…Gas masses tightly correlate with the virial masses of galaxy clusters, allowing for a precise determination of cosmological parameters by means of X-ray…”
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Connecting turbulent velocities and magnetic fields in galaxy cluster simulations with active galactic nuclei jets
Published in Monthly notices of the Royal Astronomical Society (01-05-2021)“…ABSTRACT The study of velocity fields of the hot gas in galaxy clusters can help to unravel details of microphysics on small scales and to decipher the nature…”
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Non-Kolmogorov turbulence in multiphase intracluster medium driven by cold gas precipitation and AGN jets
Published in Monthly notices of the Royal Astronomical Society (01-06-2021)“…ABSTRACT Active galactic nuclei (AGNs) feedback is responsible for maintaining plasma in global thermal balance in extended haloes of elliptical galaxies and…”
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Simulations of the Sunyaev-Zel'dovich Power Spectrum with Active Galactic Nucleus Feedback
Published in The Astrophysical journal (10-12-2010)“…We explore how radiative cooling, supernova feedback, cosmic rays, and a new model of the energetic feedback from active galactic nuclei (AGNs) affect the…”
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Whistler-regulated Magnetohydrodynamics: Transport Equations for Electron Thermal Conduction in the High-β Intracluster Medium of Galaxy Clusters
Published in The Astrophysical journal (01-12-2021)“…Abstract Transport equations for electron thermal energy in the high- β e intracluster medium (ICM) are developed that include scattering from both classical…”
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A comparison of cosmological codes: properties of thermal gas and shock waves in large-scale structures
Published in Monthly notices of the Royal Astronomical Society (01-12-2011)“…Cosmological hydrodynamical simulations are a valuable tool for understanding the growth of large-scale structure and the observables connected with this. Yet,…”
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Detecting shock waves in cosmological smoothed particle hydrodynamics simulations
Published in Monthly notices of the Royal Astronomical Society (21-03-2006)“…We develop a formalism for the identification and accurate estimation of the strength of structure formation shocks during cosmological smoothed particle…”
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ON THE CLUSTER PHYSICS OF SUNYAEV-ZEL'DOVICH AND X-RAY SURVEYS. IV. CHARACTERIZING DENSITY AND PRESSURE CLUMPING DUE TO INFALLING SUBSTRUCTURES
Published in The Astrophysical journal (10-06-2015)“…ABSTRACT Understanding the outskirts of galaxy clusters at the virial radius (R200) and beyond is critical for an accurate determination of cluster masses,…”
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