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EuCAPT White Paper: Opportunities and Challenges for Theoretical Astroparticle Physics in the Next Decade

R. Alves Batista, +131 more
TLDR
The European Consortium for Astroparticle Theory (EuCAPT) white paper as mentioned in this paper explores upcoming theoretical opportunities and challenges for our field of research with particular emphasis on the possible synergies among different subfields, and the prospects for solving the most fundamental open questions with multi-messenger observations.
Abstract
Astroparticle physics is undergoing a profound transformation, due to a series of extraordinary new results, such as the discovery of high-energy cosmic neutrinos with IceCube, the direct detection of gravitational waves with LIGO and Virgo, and many others. This white paper is the result of a collaborative effort that involved hundreds of theoretical astroparticle physicists and cosmologists, under the coordination of the European Consortium for Astroparticle Theory (EuCAPT). Addressed to the whole astroparticle physics community, it explores upcoming theoretical opportunities and challenges for our field of research, with particular emphasis on the possible synergies among different subfields, and the prospects for solving the most fundamental open questions with multi-messenger observations.

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Citations
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Journal Article

The Observation of Gravitational Waves from a Binary Black Hole Merger

TL;DR: The first direct detection of gravitational waves and the first observation of a binary black hole merger were reported in this paper, with a false alarm rate estimated to be less than 1 event per 203,000 years, equivalent to a significance greater than 5.1σ.
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Bow-Shock Pulsar Wind Nebulae Searches Aided by the North American Nanohertz Observatory for Gravitational Waves

TL;DR: The North American Nanohertz Observatory for Gravitational Waves (NANOW) is a collaboration of researchers who are actively engaged in using North American radio telescopes to detect and study gravitational waves (GWs) via pulsar timing.

Oscillons after Inflation

TL;DR: In this article, it was shown that in a class of well-motivated single-field models, inflation is followed by self resonance, leading to copious oscillon generation and a lengthy period of oscillon domination.

A Reverse Shock in GRB 130427A

TL;DR: In this paper, the authors present extensive radio and millimeter observations of the unusually bright GRB-130427A at z = 0.340, spanning 0.67-12 days after the burst.
Posted Content

A response to O. Arandjelovic's critique of "The reproducibility of research and the misinterpretation of p-values"

TL;DR: The main criticism of my piece in this article seems to be that my calculations rely on testing a point null hypothesis, i.e. the hypothesis that the true effect size is zero.
References
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Exploring the dark energy redshift desert with the Sandage-Loeb test

TL;DR: The Sandage-Loeb test as discussed by the authors is a measurement of the evolution of cosmic redshift obtained by taking quasar spectra at sufficiently separated epochs, which is unique in its coverage of the redshift desert, corresponding roughly to redshifts between 2 and 5, where other dark energy probes are unable to provide useful information about the cosmic expansion history.
Journal ArticleDOI

The role of cosmic-ray pressure in accelerating galactic outflows

TL;DR: In this article, the formation of galactic outflows from supernova (SN) explosions with the moving-mesh code AREPO was studied in a stratified column of gas with a surface density similar to the Milky Way disk at the solar circle.
Journal ArticleDOI

Gravitational waves from first-order cosmological phase transitions: lifetime of the sound wave source

TL;DR: In this article, the authors survey the general parametrisations of particle-physics models for a first-order phase transition in the early universe, including models with polynomial potentials both with and without barriers at zero temperature, and models with potentials that are classically scale-invariant.
Journal ArticleDOI

Multimessenger signals of long-term core-collapse supernova simulations: synergetic observation strategies

TL;DR: In this paper, a simulation of the core-collapse supernova (CCSN) of a 17 M-circle dot red supergiant progenitor is used to self-consistently model the multimessenger signals expected in GW, neutrino, and electromagnetic messengers.
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