Results 131 to 140 of about 2,258,607 (385)

Cosmic String Production Towards the End of Brane Inflation [PDF]

open access: yesPhys.Lett. B536 (2002) 185-192, 2002
Towards the end of the brane inflationary epoch in the brane world, cosmic strings (but not texture, domain walls or monopoles) are copiously produced during brane collision. These cosmic strings are D$p$-branes with $(p-1)$ dimensions compactified. We elaborate on this prediction of the superstring theory description of the brane world. Using the data
arxiv   +1 more source

Characterization of Genetic Landscape and Novel Inflammatory Biomarkers in Patients With Adult‐Onset Still's Disease

open access: yesArthritis &Rheumatology, EarlyView.
Objective Adult‐onset Still disease (AOSD) is a systemic autoinflammatory disorder (AID) of unknown etiology. Genetic studies have been limited. Here, we conducted detailed genetic and inflammatory biomarker analysis of a large cohort with AOSD to investigate the underlying pathology and identify novel targets for potential treatment.
Joanne Topping   +20 more
wiley   +1 more source

Cosmic internal symmetry in a finite universe [PDF]

open access: yesarXiv, 2003
Cosmic internal symmetry (COINS) relates cosmic vacuum, dark matter, baryons and radiation, in a finite universe. Evidence for COINS comes from the concordance data, including the WMAP data. COINS is behind 1)the cosmic coincidence, 2)the spatial flatness, 3)cosmic entropy, 4)initial amplitude of cosmic perturbations.
arxiv  

Energy composition of the Universe: time-independent internal symmetry

open access: yes, 2005
The energy composition of the Universe, as emerged from the Type Ia supernova observations and the WMAP data, looks preposterously complex, -- but only at the first glance. In fact, its structure proves to be simple and regular.
A. Golfand Yu   +28 more
core   +2 more sources

Geomagnetic and Cosmic Ray Activity Effect on Heart Rate during the Solar Cycle 24

open access: yesAtmosphere
The number of investigations relevant to the study of geomagnetic activity, solar events, and cosmic rays, i.e., space weather phenomena, and their impact on human health has increased dramatically over the past few years.
Maria-Christina Papailiou   +3 more
doaj   +1 more source

Exotic Acceleration Processes and Fundamental Physics

open access: yes, 2005
Gamma-ray bursts and ultra-high-energy cosmic rays provide an important testing ground for fundamental physics. A simple-minded analysis of some gamma-ray bursts would lead to a huge estimate of the overall energy emitted, and this represents a potential
Amelino-Camelia, Giovanni
core   +1 more source

Redshift‐Agnostic Machine Learning Classification: Unveiling Peak Performance in Galaxy, Star, and Quasar Classification (Using SDSS DR17)

open access: yesAstronomische Nachrichten, EarlyView.
ABSTRACT Classification of galaxies, stars, and quasars using spectral data is fundamental to astronomy, but often relies heavily on redshift. This study evaluates the performance of 10 machine learning algorithms on SDSS data to classify these objects, with a particular focus on scenarios where redshift information is unavailable.
Debashis Chatterjee, Prithwish Ghosh
wiley   +1 more source

Bremsstrahlung Energy Losses for Cosmic Ray Electrons and Positrons [PDF]

open access: yesarXiv, 2015
Recently cosmic ray electrons and positrons, i.e. cosmic ray charged leptons, have been observed. To understand the distances from our solar system to the sources of such lepton cosmic rays, it is important to understand energy losses from cosmic electrodynamic fields.
arxiv  

A Cosmic Microwave Background feature consistent with a cosmic texture

open access: yes, 2007
The Cosmic Microwave Background provides our most ancient image of the Universe and our best tool for studying its early evolution. Theories of high energy physics predict the formation of various types of topological defects in the very early universe ...
E. Martinez-Gonzalez   +6 more
core   +1 more source

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