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Oscillations in the bispectrum
P. Daniel Meerburg
There exist several models of inflation that produce primordial bispectra that contain a large number of oscillations. In this paper we discuss these models, and aim at finding a m…
An Inner Gaseous Disk around the Herbig Be Star MWC 147
T. Bagnoli, R. van Lieshout, L. B. F. M. Waters +5
We present high-spectral-resolution, optical spectra of the Herbig Be star MWC 147, in which we spectrally resolve several emission lines, including the [O I] lines at 6300 and 636…
Minimal cut-off vacuum state constraints from CMB bispectrum statistics
P. Daniel Meerburg, Jan Pieter van der Schaar
In this short note we translate the best available observational bounds on the CMB bispectrum amplitudes into constraints on a specific scale-invariant New Physics Hypersurface (NP…
Oscillations in the Primordial Bispectrum: Mode Expansion
P. Daniel Meerburg
We consider the presence of oscillations in the primordial bispectrum, inspired by three different cosmological models; features in the primordial potential, resonant type non-Gaus…