## Cosmology-Followup

ACT Publications: https://act.princeton.edu/publications

**Dillon Brout KITP talk July 2019**, H0 Tension from the Viewpoint of the Dark Energy Survey (DES)
CosmoComments | Hypothes.is cosmology comments | CosmoDiscussion on slack.com | CosmoCoffee board |

PyCosmo Hub | PyCosmo ETHzurich site | [2005.00543] Predicting Cosmological Observables with PyCosmo |

ncatlab Cosmology topics Cosmology at Home Astrophysics and Cosmology lecture notes | figures to accompany lecture notes |

ReadTheDocs: astronomy | astrophysics | cosmology | supernovae |

Sean Carroll's Spacetime and Geometry, an Introduction to General Relativity, html version freely available online until May 31, 2020

CalTech Ay 21 Galaxies and Cosmology, Winter 2018; class videos, slides, resources are online

Astrometry.net web service (David Hogg): http://nova.astrometry.net | http://astrometry.net/ | github | google groups |

Chapter 1: [1909.13740] The Fundamentals of the 21-cm Line
Chapter 2: [1909.12595] Astrophysics from the 21-cm background
Chapter 3: [1909.12430] Physical Cosmology From the 21-cm Line
Chapter 4: [1909.13860] Inference from the 21cm signal
Chapter 5: [1909.11938] 21 cm observations: calibration, strategies, observables
Chapter 6: [1909.12369] Foregrounds and their mitigation
Chapter 7: [1909.12491] The status of 21cm interferometric experiments
Chapter 8: ?
Chapter 9: [1909.12797] Future prospects
To appear as a book chapter in *The Cosmic 21-cm Revolution: Charting the first billion years of our Universe*, Ed Andrei Mesinger (Bristol: IOP Publishing Ltd) AAS-IOP ebooks; expected publication Feb. 2020
Andrei Mesinger's home page | reddit post |
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See this wp cmb primary anisotropy section for interpretations of the power spectrum peaks, and adiabatic density perturbations vs isocurvature density perturbations. The CMB can distinguish between the two: “adiabatic density perturbations produce peaks whose locations are in the ratio 1:2:3:...[56] Observations are consistent with the primordial density perturbations being entirely adiabatic, providing key support for inflation, and ruling out many models of structure formation involving, for example, cosmic strings.” adiabatic vs isocurvature perturbations | primordial isocurvature perturbations |

The Hubble tension might be pointing towards new physics, a possibility which has been the subject of significant study in the literature: see e.g. **[88–137] for a selection of works** examining this possibility. However, as pointed out in a number of recent works (e.g. [138–140]), it is important to check that proposed solutions are consistent with BAO distance measurements Soundness of Dark Energy Properties, pg 8.

Some of the numerous examples proposing to alleviate Hubble constant tension [1908.03663] The Hubble Hunter's Guide, reviews “a variety of types of departures from ΛCDM that could, in principle, restore concordance among these datasets, and we explain why we find almost all of them unlikely to be successful.” [2004.09487] Relieving the Hubble tension with primordial magnetic fields [2003.03602] Reconciling Hubble Constant Discrepancy from Holographic Dark Energy [2002.10831] Solving the curvature and Hubble parameter inconsistencies through structure formation-induced curvature [2002.06782] Reducing the \(H_{0}\) tension with generalized Proca theory [2002.06127] Tensions in the dark: shedding light on Dark Matter-Dark Energy Interactions [2002.05602] Phenomenological model explaining Hubble Tension origin [2001.07536] Resolving the \(H_0\) tension with diffusion [1912.00242] \(H_0\) tension and the String Swampland [1912.00190] Can Non-standard Recombination Resolve the Hubble Tension? [1911.11760] Early dark energy from massive neutrinos — a natural resolution of the Hubble tension, by Sakstein and Trodden [1911.06281] Thermal Friction as a Solution to the Hubble Tension; Early Dark Energy, EDE [1910.00459] Quintessence Axion Dark Energy and a Solution to the Hubble Tension [1908.06995] Oscillating scalar fields and the Hubble tension: a resolution with novel signatures; by Tristan Smith, Poulin, Amin; early dark energy, EDE [1908.04281] Interacting dark energy after the latest Planck, DES, and \(H_0\) measurements: an excellent solution to the \(H_0\) and cosmic shear tensions [1908.03324] Resolving Hubble Tension with Quintom Dark Energy Model [1908.02401] The Hubble-Lemaître constant and sound horizon from low-redshift probes [1907.12639] Can redshift errors bias measurements of the Hubble Constant? [1905.10198] Implications of a transition in the dark energy equation of state for the \(H_0\) and σ8 tensions [1907.07569] New physics in light of the \(H_0\) tension: an alternative view, by Sunny Vagnozzi | response1 | response2 | [1907.05608] Evaporating primordial black holes as varying dark energy; alleviates \(H_0\) tension [1906.11628] Baryon Acoustic Oscillations and the Hubble Constant: Past, Present and Future [1905.02278] Super-CMB fluctuations can resolve the Hubble tension [1904.09689] A possible solution to the Hubble constant discrepancy — Cosmology where the local volume expansion is driven by the domain average density [1904.01016] Rock 'n' Roll Solutions to the Hubble Tension [1903.07603] Large Magellanic Cloud Cepheid Standards Provide a 1% Foundation for the Determination of the Hubble Constant and Stronger Evidence for Physics Beyond LambdaCDM [1903.06220] Late universe decaying dark matter can relieve the \(H_0\) tension; Avi Loeb et al [1902.07081] The local and distant Universe: stellar ages and H0 [1811.04083] Early Dark Energy Can Resolve The Hubble Tension [1809.02340] Can the \(H_0\) tension be resolved in extensions to ΛCDM cosmology? [1802.03404] Prospects for resolving the Hubble constant tension with standard sirens [1712.02967] Emerging spatial curvature can resolve the tension between high-redshift CMB and low-redshift distance ladder measurements of the Hubble constant [1410.0960] Stable FLRW solutions in Generalized Massive Gravity | [1401.4173] Massive Gravity | wp article | Massive Gravity article | [1907.11594]The BAO+BBN Take on the Hubble Tension

Voyage through the hidden physics of the cosmic web UBVRI filters

Will the CMB ever recede outside our visibility: SE1 | SE2 | R1 | H1 | Doug Scott's answer to CMB questions | Ned Wright | S1 | [0704.0221] The Return of a Static Universe and the End of Cosmology |

[0907.2887] Cosmic Neutrino Last Scattering Surface, Dodelson [1904.10544] Developments in Cosmic Growth and Gravitation Wayne Hu PhD thesis Observing the Big Bang, Luca Amendola, May 2019, a nice 100+ pages on cosmology Lots of pages available for Longair's Galaxy Formation [1501.03822] Real time cosmology – A direct measure of the expansion rate of the Universe with SKA

Emission spectra of the elements: Atomic Emission Spectra of the Periodic Table of Elements Atomic Absorption and Emission Spectra | The Atomic Spectrum of Hydrogen |

Planck 2013 results. XVI. Cosmological parameters

Quantum Fluctuations in Cosmology and How They Lead to a Multiverse, by Alan Guth

Cosmological parameter inference with Bayesian statistics [1903.11127] The main aim of this work is to provide an introduction of Bayesian parameter inference and its applications to cosmology. We assume the reader is familiarized with the basic concepts of statistics, but not necessarily with Bayesian statistics. Then, we provide a general introduction to this subject, enough to work out some examples

Constraining the physics of the early universe [1903.11472] PhD thesis

The Degree of Fine-Tuning in our Universe — and Others [1902.03928], Fred C. Adams

HashTags: #cosmology