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Quasars provide our farthest-reaching view of the Universe. The Sloan Survey now contains over 100,000 quasar candidates. A careful look at the angular distribution of quasar magnitudes shows a surprising intensity enhancement with a "bulls…

宇宙学与河外天体物理 · 物理学 2012-04-26 Michael J. Longo

We evaluate the possibility of observable effects arising from collisions between vacuum bubbles in a universe undergoing false-vacuum eternal inflation. Contrary to conventional wisdom, we find that under certain assumptions most positions…

高能物理 - 理论 · 物理学 2008-11-26 Anthony Aguirre , Matthew C Johnson , Assaf Shomer

An anomaly in the distribution of quasar magnitudes based on the SDSS survey, has been recently reported by Longo (2012). The angular size of this anomaly is of the order of $\rm \pm 15^o$ on the sky. A low surface brightness smooth…

宇宙学与河外天体物理 · 物理学 2015-06-05 Edmond Giraud

An introduction to models of open universes originating from bubbles, including a summary of recent theoretical results for the power spectrum. To appear in the proceedings of the XXXIth Moriond meeting, "Microwave Background Anisotropies."

天体物理学 · 物理学 2008-02-03 J. D. Cohn

An analogy is developed between the bubble universe model and the Young-Laplace equation obtaining an analogic equation and commenting some numerical results produced by its application. The results, even if based on a simple analogy,…

综合物理 · 物理学 2012-08-21 C. Della Volpe

Quasars provide our farthest-reaching view of the Universe. The Sloan Survey now contains over 100,000 quasar candidates. A careful look at the angular distribution of quasar spectra shows a surprising "bullseye" pattern on the sky toward…

宇宙学与河外天体物理 · 物理学 2011-12-30 Michael J. Longo

Based on previously published alternative reflections on gravitation, additional conclusions concerning anomalous gravitational effects in the universe are derived. For systems with spherical mass distribution and high central density of…

天体物理学 · 物理学 2007-05-23 Johann Albers

The matter content of the Universe is generally regarded as a perfect fluid on sufficiently large scales, for all epochs. But the recent cosmological matter distribution, consisting of an (ideally) random distribution of gravitationally…

天体物理学 · 物理学 2007-05-23 Brett Bochner

In principle the geometry of the universe can be investigated by measuring the angular size of known objects as a function of distance. Thus the distribution of angular sizes provides a critical test of the stable and static model of the…

天体物理学 · 物理学 2009-10-22 David F. Crawford

The large scale distribution of galaxies in the universe displays a complex pattern of clusters, super-clusters, filaments and voids with sizes limited only by the boundaries of the available samples. A quantitative statistical…

宇宙学与河外天体物理 · 物理学 2015-05-20 Francesco Sylos Labini , Luciano Pietronero

Recent developments in cosmology suggest that much of the universe is in a state of explosive, accelerated expansion, called inflation. We live in a "bubble" where inflation has ended, and other bubbles with diverse properties are…

高能物理 - 理论 · 物理学 2011-08-26 Alexander Vilenkin

A model of Universe with a small eccentricity due to the presence of a magnetic field at the decoupling time (i.e. an Ellipsoidal Universe) has been recently proposed for the solution of the low quadrupole anomaly of the angular power…

天体物理学 · 物理学 2008-12-18 Alessandro Gruppuso

The interior of a vacuum bubble in de Sitter space may give an open universe with sufficient homogeneity to agree with observations. Here, previous work by Bucher, Goldhaber and Turok is extended to describe a thin bubble wall with nonzero…

天体物理学 · 物理学 2009-10-28 J. D. Cohn

The Hubble law, determined from the distance modulii and redshifts of galaxies, for the past 80 years, has been used as strong evidence for an expanding universe. This claim is reviewed in light of the claimed lack of necessary evidence for…

综合物理 · 物理学 2011-11-22 John G. Hartnett

Recently we proposed that the acceleration of the Universe could be due to gravity leaking to extra dimensions. This scenario gives an alternative to the cosmological constant or quintessence. In [astro-ph/0106274] the authors claimed that…

天体物理学 · 物理学 2007-05-23 C. Deffayet , G. Dvali , G. Gabadadze

The aim of this paper is to investigate the coupled oscillations of multiple bubbles within a cluster. The interaction between a bubble and the other bubbles in a cluster produces an additional mass. For a fixed number of bubbles ( ) and…

综合物理 · 物理学 2020-11-03 Ion Simaciu , Gheorghe Dumitrescu , Zoltan Borsos

High ambient interstellar pressure is suggested as a possible factor to explain the ubiquitous observed growth-rate discrepancy for supernova-driven superbubbles and stellar wind bubbles. Pressures of P/k ~ 1e5 cm-3 K are plausible for…

天体物理学 · 物理学 2009-11-10 M. S. Oey , G. Garcia-Segura

The intervening z=0.7443 Mg II absorption system in the spectrum of MC 1331+170 shows an unusual series of line pairs, each with velocity separations of 30 km/s. These lines could be explained as the shells of expanding superbubbles…

天体物理学 · 物理学 2009-11-06 Nicholas A. Bond , Chris W. Churchill , Jane C. Charlton , Steven S. Vogt

2017 observations by Riess and coworkers have indicated that the universe is expanding some seven percent faster than the currently accepted cosmological model described. In this paper we argue that this discrepancy can be eliminated by…

综合物理 · 物理学 2018-01-19 Burra G. Sidharth , A. Das

The observational and theoretical state of Galactic and extragalactic bubbles are reviewed. Observations of superbubbles are discussed, with some emphasis on nearby bubbles such as the Local Bubble (LB) and the Loop I superbubble (LI).…

天体物理学 · 物理学 2007-05-23 D. Breitschwerdt , M. A. de Avillez , M. J. Freyberg
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