Browsing The 2nd International Conference "Exploring the Energetic Universe 2019" by Title

Now showing items 30-33 of 33

The Well-Tempered Cosmological Constant

Appleby, Stephen; Linder, Eric V. (NURIS; Energetic Cosmos Laboratory, 2018-05-01)

Self tuning is one of the few methods for dynamically cancelling a large cosmological constantand yet giving an accelerating universe. Its drawback is that it tends to screen all sources of energydensity, including matter. ...
Will Gravitational Wave Sirens Determine the Hubble Constant? [Article]

Shafieloo, Arman; Keeley, Ryan E.; Linder, Eric V. (NURIS; Energetic Cosmos Laboratory, 2018-12-19)

Lack of knowledge about the background expansion history of the Universe from independent observations makes it problematic to obtain a precise and accurate estimation of the Hubble constant H0 from gravitational wave ...
Witnessing the reionization history using Cosmic Microwave Background observation from Planck

Hazra, Dhiraj Kumar; Smoot, George F (NURIS; Energetic Cosmos Laboratory, 2017-12-11)

We constrain the history of reionization using the data from Planck 2015 Cosmic Microwave Background (CMB) temperature and polarization anisotropy observations. We also use prior constraints on the reionization history at ...
Λ is Coming: Parametrizing Freezing Fields

Linder, Eric V. (NURIS; Energetic Cosmos Laboratory, 2018-03-21)

We explore freezing dark energy, where the evolution of the field approaches that of a cosmological constant at late times. We propose two general, two-parameter forms to describe the class of freezing field models, in ...