Probing Cosmic Origins with CO and [CII] Emission Lines.
Primordial non-gaussianity (PNG) is an invaluable window into the physical processes that gave rise to cosmological structure. The presence of local shape PNG imprints a distinct scale-dependent correction to the bias of dark matter tracers on large scales, which can be effectively probed via the technique of intensity mapping. Considering an upcoming generation of experiments, we demonstrate that intensity mapping of CO and [CII] emission can improve upon the current best constraints from the Planck satellite. We show that measurement of the CO intensity power spectrum by a hypothetical next stage of the ground-based COMAP experiment can achieve $\sigma(f_{\rm NL}^{\rm loc}) = 3.7$, and that the proposed CMB satellite mission PIXIE can achieve $\sigma(f_{\rm NL}^{\rm loc}) = 4.9$ via measurement of [CII] intensity power spectrum.
Publisher URL: http://arxiv.org/abs/1801.10178
DOI: arXiv:1801.10178v2
Keeping up-to-date with research can feel impossible, with papers being published faster than you'll ever be able to read them. That's where Researcher comes in: we're simplifying discovery and making important discussions happen. With over 19,000 sources, including peer-reviewed journals, preprints, blogs, universities, podcasts and Live events across 10 research areas, you'll never miss what's important to you. It's like social media, but better. Oh, and we should mention - it's free.
Researcher displays publicly available abstracts and doesn’t host any full article content. If the content is open access, we will direct clicks from the abstracts to the publisher website and display the PDF copy on our platform. Clicks to view the full text will be directed to the publisher website, where only users with subscriptions or access through their institution are able to view the full article.