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I present a pedagogical review of inflation and the cosmic microwave background. I describe how a short period of accelerated expansion can replace the special initial conditions of the standard big bang model. I also describe the…

天体物理学 · 物理学 2017-08-23 Charles H. Lineweaver

The observational status of inflation after the Planck 2013 and 2015 results and the BICEP2/Keck Array and Planck joint analysis is discussed. These pedagogical lecture notes are intended to serve as a technical guide filling the gap…

宇宙学与河外天体物理 · 物理学 2017-02-22 Jerome Martin

We evaluate the expected level of foreground contamination to the cosmic microwave background (CMB) polarised radiation, focusing on the diffuse emission from our own Galaxy. In particular, we perform a first attempt to simulate an all sky…

天体物理学 · 物理学 2015-06-24 Carlo Baccigalupi

Future arcminute resolution polarization data from ground-based Cosmic Microwave Background (CMB) observations can be used to estimate the contribution to the temperature power spectrum from the primary anisotropies and to uncover the…

One of the major predictions of inflation is the existence of a stochastic background of cosmological gravitational waves (GW). These gravitational waves can induce significant temperature anisotropies in the Cosmic Microwave Background…

天体物理学 · 物理学 2009-11-07 Alessandro Melchiorri , Carolina Odman

The Cosmic Microwave Background (CMB) provides a precious window on fundamental physics at very high energy scales, possibly including quantum gravity, GUTs and supersymmetry. The CMB has already enabled defect-based rivals to inflation to…

天体物理学 · 物理学 2009-09-11 John Ellis

We explore the potential use of the Radio Continuum (RC) survey conducted by the Square Kilometre Array (SKA) to remove (delens) the lensing-induced B-mode polarization and thus enhance future cosmic microwave background (CMB) searches for…

宇宙学与河外天体物理 · 物理学 2016-03-02 Toshiya Namikawa , Daisuke Yamauchi , Blake Sherwin , Ryo Nagata

We discuss the time dependence and future of the Cosmic Microwave Background (CMB) in the context of the standard cosmological model, in which we are now entering a state of endless accelerated expansion. The mean temperature will simply…

天体物理学 · 物理学 2008-11-26 J. P. Zibin , A. Moss , D. Scott

Anisotropies in the Cosmic Microwave Background (CMB) contain a wealth of information about the past history of the universe and the present values of cosmological parameters. I ouline some of the theoretical advances of the last few years.…

天体物理学 · 物理学 2007-05-23 Scott Dodelson

The B-mode polarization of the cosmic microwave background (CMB) provides a unique window into tensor perturbations from inflationary gravitational waves. Survey effects complicate the estimation and description of the power spectrum on the…

宇宙学与河外天体物理 · 物理学 2016-09-28 Eric R. Switzer , Duncan J. Watts

Observational cosmology has become an important laboratory for testing General Relativity, with searches for modified gravity forming a significant portion of the science case for existing and future surveys. In this paper, we illustrate…

宇宙学与河外天体物理 · 物理学 2019-10-23 Zhen Pan , Matthew C. Johnson

Cosmic microwave background (CMB) anisotropy may result from both scalar and tensor perturbations. For a sufficiently narrow range of angular scales, CMB perturbations can be characterized by four parameters. Results from the Cosmic…

天体物理学 · 物理学 2009-10-22 Scott Dodelson , Lloyd Knox , Edward W. Kolb

This white paper addresses key challenges for the design of next-decade Cosmic Microwave Background (CMB) experiments, and for assessing their capability to extract cosmological information from CMB polarization. We focus here on the…

The temperature and polarization of the cosmic microwave background (CMB), as measured today, may offer key insights into the topology of the early universe prior to inflation, for example, by discriminating between flat and warped…

宇宙学与河外天体物理 · 物理学 2025-09-29 Miguel-Angel Sanchis-Lozano

Cosmic Microwave Background (CMB) lensing is a powerful probe of the matter distribution in the Universe. The standard quadratic estimator, which is typically used to measure the lensing signal, is known to be suboptimal for low-noise…

宇宙学与河外天体物理 · 物理学 2019-04-26 Benjamin Horowitz , Simone Ferraro , Blake D. Sherwin

Reconstructed maps of the lensing convergence of the cosmic microwave background (CMB) will play a major role in precision cosmology in coming years. CMB lensing maps will enable calibration of the masses of high-redshift galaxy clusters…

宇宙学与河外天体物理 · 物理学 2018-08-01 Mathew S. Madhavacheril , J. Colin Hill

The tremendous experimental progress in cosmic microwave background (CMB) temperature and polarization anisotropy studies over the last few years has helped establish a standard paradigm for cosmology at intermediate epochs and has…

天体物理学 · 物理学 2011-05-12 Wayne Hu

The quest for primordial $B$-mode polarization signatures in the Cosmic Microwave Background (CMB) is a major goal of contemporary cosmology. Detecting these signatures would confirm primordial gravitational waves and allow precise…

宇宙学与河外天体物理 · 物理学 2025-03-28 Yusuke Takase