The hydrodynamics of an ultrarelativistic flow, enclosed by a strong shock wave, are described by the well known Blandford-McKee solutions in spherical geometry. These solutions, however, become inaccurate at a
Solving high-dimensional parameter inference: marginal posterior densities & Moment Networks. (arXiv:2011.05991v1 [stat.ML])
High-dimensional probability density estimation for inference suffers from the “curse of dimensionality”. For many physical inference problems, the full posterior distribution is unwieldy and seldom used in practice. Instead, we
Neural networks as optimal estimators to marginalize over baryonic effects. (arXiv:2011.05992v1 [astro-ph.CO])
Many different studies have shown that a wealth of cosmological information resides on small, non-linear scales. Unfortunately, there are two challenges to overcome to utilize that information. First, we do
Constraints on Axions from Cosmic Distance Measurements. (arXiv:2011.05993v1 [hep-ph])
Axion couplings to photons could induce photon-axion conversion in the presence of magnetic fields in the Universe. The conversion could impact various cosmic distance measurements such as luminosity distances to
The influence of infall on the properties of protoplanetary discs. (arXiv:2011.05996v1 [astro-ph.EP])
We perform a population synthesis of protoplanetary discs including infall with a total of $50\,000$ simulations using a 1D vertically integrated viscous evolution code, studying a large parameter space in
Modeling in-ice radio propagation with parabolic equation methods. (arXiv:2011.05997v1 [astro-ph.IM])
We investigate the use of parabolic equation (PE) methods for solving radio-wave propagation in polar ice. PE methods provide an approximate solution to Maxwell’s equations, in contrast to full-field solutions
An AMUSING Look at the Host of the Periodic Nuclear Transient ASASSN-14ko Reveals a Second AGN. (arXiv:2011.05998v1 [astro-ph.GA])
We present Multi-Unit Spectroscopic Explorer (MUSE) integral-field spectroscopy of ESO 253$-$G003, which hosts a known Active Galactic Nucleus (AGN) and the periodic nuclear transient ASASSN-14ko, observed as part of the
Primordial black hole dark matter in dilaton-extended two-field Starobinsky inflation. (arXiv:2011.05999v1 [hep-th])
We investigate the production of primordial black holes and their contribution to the presently observed dark matter in a dilaton two-field extension of Starobinsky’s quadratic $f(R)$ model of inflation. The
Unveiling the rarest morphologies of the LOFAR Two-metre Sky Survey radio source population with self-organised maps. (arXiv:2011.06001v1 [astro-ph.IM])
The Low Frequency Array (LOFAR) Two-metre Sky Survey (LoTSS) is a low-frequency radio continuum survey of the Northern sky at an unparalleled resolution and sensitivity. In order to fully exploit
TDCOSMO VI: Distance Measurements in Time-delay Cosmography under the Mass-sheet transformation. (arXiv:2011.06002v1 [astro-ph.CO])
Time-delay cosmography with gravitationally lensed quasars plays an important role in anchoring the absolute distance scale and hence measuring the Hubble constant, $H_{0}$, independent of traditional distance ladder methodology. A
