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Spectrally resolved cosmic rays: II -- Momentum-dependent cosmic ray diffusion drives powerful galactic winds
Philipp Girichidis, Christoph Pfrommer, Rüdiger Pakmor +1
Recently, cosmic ray (CR) feedback has been identified as a critical process in galaxy formation but most previous simulations have integrated out the energy-dependence of the CR d…
On the accuracy of HI observations in molecular clouds -- More cold HI than thought?
D. Seifried, H. Beuther, S. Walch +4
We present a study of the cold atomic hydrogen (HI) content of molecular clouds simulated within the SILCC-Zoom project. We produce synthetic observations of HI at 21 cm including…
Extraction of a second power-law tail of the density distribution in simulated clouds
L. Marinkova, T. Veltchev, Ph. Girichidis +1
The emergence and development of a power-law tail (PLT) at the high-density end of the observed column-density distribution is thought to be indicative for advanced evolution of st…
Simulations of cosmic ray propagation
M. Hanasz, A. Strong, P. Girichidis
We review numerical methods for simulations of cosmic ray (CR) propagation on galactic and larger scales. We present the development of algorithms designed for phenomenological and…
Alignment of the magnetic field in star forming regions and why it might be difficult to observe
Philipp Girichidis
Magnetic fields are an important component of the interstellar medium (ISM) and exhibit strongly varying field strengths and a non-trivial correlation with the gas density. Its dyn…
Cosmic rays and non-thermal emission in simulated galaxies: III. probing cosmic ray calorimetry with radio spectra and the FIR-radio correlation
Maria Werhahn, Christoph Pfrommer, Philipp Girichidis
An extinction-free estimator of the star-formation rate (SFR) of galaxies is critical for understanding the high-redshift universe. To this end, the nearly linear, tight correlatio…
Cosmic rays and non-thermal emission in simulated galaxies. II. -ray maps, spectra and the far infrared--ray relation
Maria Werhahn, Christoph Pfrommer, Philipp Girichidis +1
The -ray emission of star-forming (SF) galaxies is attributed to hadronic interactions of cosmic ray (CR) protons with the interstellar gas and contributions from CR electrons v…
Cosmic rays and non-thermal emission in simulated galaxies. I. Electron and proton spectra compared to Voyager-1 data
Maria Werhahn, Christoph Pfrommer, Philipp Girichidis +2
Current-day cosmic ray (CR) propagation studies use static Milky-Way models and fit parametrized source distributions to data. Instead, we use three-dimensional magneto-hydrodynami…
Simulating radio synchrotron emission in star-forming galaxies: small-scale magnetic dynamo and the origin of the far infrared-radio correlation
Christoph Pfrommer, Maria Werhahn, Rüdiger Pakmor +2
In star-forming galaxies, the far-infrared (FIR) and radio-continuum luminosities obey a tight empirical relation over a large range of star-formation rates (SFR). We examine magne…
SILCC VI -- Multi-phase ISM structure, stellar clustering, and outflows with supernovae, stellar winds, ionising radiation and cosmic rays
Tim-Eric Rathjen, Thorsten Naab, Philipp Girichidis +6
We present simulations of the multi-phase interstellar medium (ISM) at solar neighbourhood conditions including thermal and non-thermal ISM processes, star cluster formation, and f…
The in situ formation of molecular and warm ionised gas triggered by hot outflows
Philipp Girichidis, Thorsten Naab, Stefanie Walch +1
Molecular outflows contributing to the matter cycle of star forming galaxies are now observed in small and large systems at low and high redshift. Their physical origin is still un…