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The properties of universes are explored that are entirely in the interior of black holes in another universe, a `mother universe'. It is argued that these models offer a paradigm that may shed a new light on old cosmological problems. The…

广义相对论与量子宇宙学 · 物理学 2022-10-17 Herwig Dejonghe

Anisotropies in the electromagnetic emission produced by dark matter annihilation or decay in the extragalactic sky are a recent tool in the quest for a particle dark matter evidence. We review the formalism to compute the two-point angular…

宇宙学与河外天体物理 · 物理学 2014-01-28 Nicolao Fornengo , Marco Regis

Both global, intermediate and local scales of Climate Change have been studied extensively, but a unified diagnostic framework for examining all spatial scales concurrently has remained elusive. Here we present a new tool-set using…

大气与海洋物理 · 物理学 2022-05-19 Albert Sneppen

Detailed characterization of an extrasolar planet's atmosphere provides the best hope for distinguishing the makeup of its outer layers, and the only hope for understanding the interplay between initial composition, chemistry, dynamics &…

地球与行星天体物理 · 物理学 2016-03-09 Ian J. M. Crossfield

Dissipative dark matter, such as mirror dark matter and related hidden sector dark matter candidates, requires an energy source to stabilize dark matter halos in spiral galaxies. It has been proposed previously that supernovae could be the…

宇宙学与河外天体物理 · 物理学 2013-08-09 R. Foot

Planetary effects have been attributed to biological processes without scientific rigor. Some generic invisible slow matter from the dark Universe in the form of streams or clusters with occasional large flux enhancements due to planetary…

The thermal and expansion history of the Universe before big bang nucleosynthesis is unknown. We investigate the evolution of cosmological perturbations through the transition from an early matter era to radiation domination. We treat…

宇宙学与河外天体物理 · 物理学 2013-05-29 Adrienne L. Erickcek , Kris Sigurdson

Atmospheric spectroscopy provides a window into the properties of exoplanets. However, the physical interpretation of retrieved data and its implications for the internal properties of exoplanets remains nebulous. This letter addresses…

地球与行星天体物理 · 物理学 2024-06-24 Darius Modirrousta-Galian , Riccardo Spinelli , Antonio Jimenez-Escobar

Stellar occultations and transits occur when a planetary body passes in front of a star (including our Sun). For objects with an atmosphere, refraction plays an essential role to explain the drops of flux and the aureoles observed during…

地球与行星天体物理 · 物理学 2023-10-13 Bruno Sicardy

Although transit spectroscopy is a powerful method for studying the composition, thermal properties and dynamics of exoplanet atmospheres, only a few transiting terrestrial exoplanets will be close enough to allow significant transit…

地球与行星天体物理 · 物理学 2015-05-28 Franck Selsis , Robin Wordsworth , François Forget

One can make the very simple hypothesis that the Universe is the inside of an hypersphere in 4 dimensions, where our 3-dimensional world consists of hypersurfaces at different radii. Based on this assumption it is possible to show that…

综合物理 · 物理学 2007-05-23 Jose B. Almeida

The Sun shrinks during solar maximum and regrows during solar minimum by a few kilometers. Here, we observe, for the first time, that the solar radius variation shows planetary relationship. This suggests that some remote planetary links…

综合物理 · 物理学 2022-02-10 Konstantin Zioutas , Marios Maroudas , Alexander Kosovichev

Macroscopic dark matter is almost unconstrained over a wide "asteroid-like" mass range, where it could scatter on baryonic matter with geometric cross section. We show that when such an object travels through a star, it produces shock waves…

高能物理 - 唯象学 · 物理学 2022-01-12 Anirban Das , Sebastian A. R. Ellis , Philip C. Schuster , Kevin Zhou

Observations suggest that the earth's surface has been warming relative to the troposphere for the last 25 years; this is not only difficult to explain but also contrary to the results of climate models. We provide new evidence that the…

In this paper we review in detail a number of approaches that have been adopted to try and explain the remarkable observation of our accelerating Universe. In particular we discuss the arguments for and recent progress made towards…

高能物理 - 理论 · 物理学 2008-11-26 Edmund J. Copeland , M. Sami , Shinji Tsujikawa

In this paper we analyze the possibility of detecting nontrivial quantum phenomena in observations of the temperature anisotropy of the cosmic background radiation (CBR), for example, if the Universe could be found in a coherent…

广义相对论与量子宇宙学 · 物理学 2011-06-24 Mariano Franco , Esteban Calzetta

It is shown that the vacuum condensate induced by many phenomena behaves as a perfect fluid which, under particular conditions, has zero or negative pressure. In particular, the condensates of thermal states, of fields in curved space and…

高能物理 - 理论 · 物理学 2016-10-28 Antonio Capolupo

Old and new puzzles of cosmology are reexamined from the point of view of quantum theory of the universe developed here. It is shown that in proposed approach the difficulties of the standard cosmology do not arise. The theory predicts the…

广义相对论与量子宇宙学 · 物理学 2007-05-23 V. E. Kuzmichev , V. V. Kuzmichev

Over the last decades, observations with increasing quality have revolutionized our understanding of the general properties of the Universe. Questions posed for millenia by mankind about the origin, evolution and structure of the cosmos…

宇宙学与河外天体物理 · 物理学 2020-07-22 Ricardo T. Génova-Santos

Axions and other very weakly interacting slim particles (WISPs) may be non-thermally produced in the early universe and survive as constituents of the dark universe. We describe their theoretical motivation and their phenomenology. A huge…

高能物理 - 唯象学 · 物理学 2012-11-01 Andreas Ringwald