The workshop addressed all theoretical aspects of this science: which inflationary models predict an amplitude that will be detected and which do not? What do alternatives to inflation predict?
Author: Scott Dodelson
Publisher: American Institute of Physics
The workshop brought together experts in astronomy and particle physics to make the science case for a satellite mission to measure the polarization of the cosmic microwave background (CMB). Detailed maps of the CMB polarization will potentially reveal clues about the origin of the universe. An early epoch of inflation typically produces a spectrum of gravitational waves and these leave a distinctive imprint on the CMB polarization field. The workshop addressed all theoretical aspects of this science: which inflationary models predict an amplitude that will be detected and which do not? What do alternatives to inflation predict? Apart from the gravitational wave signal, what other science can be gleaned from these measurements? High resolution maps should have traces of gravitational lensing which in turn is affected by dark energy and massive neutrinos. How well will a satellite mission be able to measure these effects? CMB polarization also speaks to the end of the Dark Ages; the constraints on reionzation are discussed in the context of all other probes. Finally, several articles – based on many talks and follow-up work – probe the science of and removal of Galactic foregrounds.
though the polarized component is expected to be small (about 10% of the total signal) it carries valuable cosmological information. A first detection of CMB polarization, in agreement with theoretical predictions, has been announced by ...
Author: Alessandro De Angelis
Publisher: World Scientific
The contributions in this volume provide a snapshot of the latest research and future plans for space-borne and ground-based experiments dedicated to the observation of the gamma-ray sky. The articles are authored by both seasoned veterans of the first dedicated gamma-ray missions, and young scientists entering the fascinating field of gamma-ray astrophysics.With the advent of gamma-ray instrumentation on spacecraft and large and sensitive ground-based detectors, new and unexpected phenomena have been discovered, such as gamma-ray bursts and gamma-ray emission from blazars. The immense vitality of the field in the current ?post-EGRET era? is witnessed by the numerous ongoing and forthcoming gamma-ray experiments documented here, complementary to various cosmic-ray, neutrino, astroparticle and X-ray projects.
Preface These are the Proceedings of the 8th Taipei Astrophysics Workshop on the ” AMiBA 2001 : High - z Clusters , Missing Baryons , and CMB Polarization ” , which was jointly organized by the Physics Department of the National Taiwan ...
Author: Lin-Wen Chen
Category: Cosmic background radiation
Annotation Proceedings of a June 2001 workshop report on instrumentation for observing the Sunyaev-Zel'dovich (SZ) effect. Papers are grouped in sections on SZ surveys, optical surveys of galaxy clusters, ICM and IGM, cosmic microwave background polarization, and SZ machines and observation strategies. Some specific topics examined include X-ray properties of high redshift clusters, and 3D simulation of ultra light scalar field dark matter. There is no subject index. Annotation (c)2003 Book News, Inc., Portland, OR (booknews.com)
Although direct removal of this theoretical prejudice is desirable (and will be possible with future CMB data), ... One way in which the remaining uncertainties may be resolved is through polarization of the CMB fluctuations.
Author: Neil J C Spooner
Publisher: World Scientific
This book contains written versions of the presentations made at the 4th International Workshop on the Identification of Dark Matter (IDM 2002), held in York, UK, in September 2002. The objective of this workshop series is to assess the status of work attempting to identify what constitutes dark matter — in particular, to consider the techniques being used, how successful they are, and what new techniques are likely to improve prospects for identifying likely dark matter candidates in the future. At IDM 2002 special emphasis was placed on recent results obtained in searches for baryonic and non-baryonic dark matter. The proceedings include reviews of major topics on dark matter, as well as short contributed talks. Contents:Dark Matter in the Universe — Theory and Observation:Cosmology, Large Scale Structure and Dark EnergyHalos, Halo Models and Dark MatterParticle Physics and SupersymmetryBaryonic Searches:Introduction to Baryonic Dark Matter SearchesDirect Observational Evidence for Baryonic Dark MatterMicrolensing Evidence for Dark MatterNon-Baryonic Searches:Introduction to Non-Baryonic Dark Matter SearchesWIMP DetectorsLiquid Xenon Detectors of WIMPsAxion DetectorsUnderground LaboratoriesNeutron Background in Dark Matter ExperimentsWIMP Detection by Indirect TechniquesNeutrino Dark Matter SearchesNext Generation Neutrino, WIMP and Axion Techniques Readership: Researchers, academics and graduate students in high-energy physics and astrophysics. Keywords:Dark Matter;Neutralino;WIMP;Axion;Neutrino;Baryonic Dark Matter;Dark Energy;Detector
... Lancaster LAI 4YB, U. K. Abstract Inflation generates gravitational waves, which may in the forseeable future be observable in the anisotropy and polarization of the cosmic microwave background (cmb) anisotropy.
Author: Leszek Roszkowski
Publisher: World Scientific
Deciphering the script for the Big Bang has now become a joint effort of particle physicists and cosmologists. The origin and first moments of the early Universe were determined by the same fundamental processes which are studied in terrestrial accelerators and whose traces from the early Universe can be seen in astrophysical observations. It is now almost universally accepted that most of the debris left over from the Big Bang is likely to be in the form of particle dark matter. Identifying its nature and measuring its abundance in the Universe have become major goals of theorists and experimentalists alike. This volume reviews the progress made at the frontiers of research in these rapidly expanding fields. A broad range of topics, from inflation to primordial black holes to physics at the Planck era, and to dark matter and neutrinos — both reviews and reports on the most recent advances — is presented by leaders in the field. Contents: Neutrino Puzzles and Their Implications for the Nature of New Physics (R N Mohapatra)Neutrino Oscillation Search in CHORUS and NOMAD (J Herin)Double Beta Decay — Physics Beyond the Standard Model Now, and in Future (GENIUS) (H V Klapdor-Kleingrothaus)Cryogenic Searches for Dark Matter (D A Bauer)Accelerator Constraints on Neutralino Dark Matter (J Ellis)Non-universal Soft SUSY Breaking and Dark Matter (P Nath & R Arnowitt)Status of the Heidelberg Dark Matter Search (HDMS) Experiment (Y Ramachers)WIMPs Detection Using Double Phase TEA Doped Xenon (H Wang)Probing Inflation with Large-Scale Structure (J Frieman)Who is the Inflaton? (E Kolb)Recent Progress in Inflationary Cosmology (A Linde)Preheating After Inflation (L Kofman)What is the Future of Causal Models of Cosmic Structure Formation? (A Albrecht)Magnetic Fields from the Electroweak Phase Transition (O Törnkvist)Finite Temperature Corrections to CP Violating Asymmetries for Baryogenesis (L Covi et al.)Evaporation of Cosmological Black Holes (R Bousso & S W Hawking)Black Holes and Superstrings (R E Kallosh)The Importance of Non-Gaussian Fluctuations in Inflationary Primordial Black Hole Production (J S Bullock & J R Primack)and other papers Readership: Astrophysicists and high energy physicists. Keywords:Big Bang;Early;Universe;Neutrino;Dark Matter;Cosmology;Primordial;Astrophysics
Johnson D. Cryogenic technology for CMB-Pol: mechanical cryocoolers for the 4K to 200K temperature range, CMB Polarization Workshop, Boulder, CO, August 27, 2008. http://cmbpol.uchicago.edu/workshops/technology2008/depot/ ...
Author: Milind D. Atrey
Publisher: Springer Nature
This book serves as an introduction to cryocooler technology and describes the principle applications of cryocoolers across a broad range of fields. It covers the specific requirements of these applications, and describes how the advantages and disadvantages of different cryocooler systems are taken into consideration. For example, Stirling coolers tend to be used only in space applications because of their high coefficient of performance, low weight and proven reliability, whilst Gifford-McMahon coolers are used for ground applications, such as in cryopumps and MRI shield cooling applications. Joule-Thomson cryocoolers are used in missile technology because of the fast cool down requirements. The cryocooler field is fast developing and the number of applications are growing because of the increasing costs of the cryogens such as Helium and Neon. The first chapter of the book introduces the different types of cryocoolers, their classification, working principles, and their design aspects, and briefly mentions some of the applications of these systems. This introductory chapter is followed by a number of contributions from prominent international researchers, each describing a specific field of application, the cooling requirements and the cryocooler systems employed. These areas of application include gas liquefaction, space technology, medical science, dilution refrigerators, missile systems, and physics research including particle accelerators. Each chapter describes the cooling requirements based on the end use, the approximate cooling load calculations, the criteria for cryocooler selection, the arrangement for cryocooler placement, the connection of the cooler to the object to be cooled, and includes genuine case studies. Intended primarily for researchers working on cryocoolers, the book will also serve as an introduction to cryocooler technology for students, and a useful reference for those using cryocooler systems in any area of application.
contaminate the CMB spectrum at a level of = 30-90 % at 1 = 500 and a 80-100 % at 1 = 800 ( Giommi ... like the secondary high l peaks of the CMB power spectrum or very weak signals like those coming from CMB polarization .
16- or 10-12 i 10-12 F. Figure 1: Perturbations for IG models for various values of £: CMB temperature (left), and polarization (right). Dotted, dashed, solid lines are for £ = 0, .01, .02 respectively directly linked to the scalar ...
Author: U Cotti
Publisher: World Scientific
This volume presents the newest results and developments in the fast-moving field of astroparticle physics. The following topics are covered: dark matter, baryogenesis, neutrino physics and astrophysics, inflation, topological defects, cosmic ray physics and cosmological implications of grand unification, supersymmetry, superstrings and extra dimensions. Contents:Dark Matter:CP-Violating Phases and the Dark Matter Problem (T Falk)Dark Matter Annihilation at the Center of the Galaxy (P Gondolo)High Energy Cosmic Rays:The Most Energetic Particles in the Universe (E Roulet et al.)Cosmic Rays Signatures of Massive Relic Particles (S Sarkar)Energies in the Universe:Quintessence in Tensor–Scalar Theories of Gravity (N Bartolo & M Pietroni)Energy Conditions and Their Cosmological Implications (M Visser & C Barceló)Big Bang Nucleosynthesis:The Current Status of Big Bang Nucleosynthesis and Related Observations (K A Olive)Lithium-6: A Probe of the Early Universe (K Jedamzik)Inflation:Current Issues for Inflation (D Lyth)Nonthermal Production of Dangerous Relics in the Early Universe (A Riotto)CMB and Structure Formation:Back Reaction of Cosmological Perturbations (R H Brandenberger)Cosmological Implications of a Neutrino Asymmetry (J Lesgourgues & S Pastor)Topological Defects:Vortex Phases in Condensed Matter and Cosmology (M Laine)The Fate of Cosmic String Zero Modes (A-C Davis et al.)Phase Transitions and Magnetic Fields:High Temperature Symmetry Nonrestoration (B Bajc)Primordial Magnetic Fields and Electroweak Baryogenesis (D Grasso)Q-Balls:Cosmology of SUSY Q-Balls (A Kusenko)Q-Ball Formation Through Affleck-Dine Mechanism (S Kasuya)Neutrinos:Theoretical Implications of Recent Neutrino Discoveries (R Mohapatra)Mirror Neutrinos and the Early Universe (R R Volkas)Baryogenesis:Recent Progress in Affleck-Dine Baryogenesis (K Enqvist)Sources for Electroweak Baryogenesis (K Kainulainen)String Cosmology:Cosmology of Strongly Coupled Strings (P Binétruy)Remarks of Anomalous U(1) Symmetries in String Theory (H P Nilles)Extra Dimensions:Large Extra Space and Time Dimensions: Some Cosmological Issues (G Gabadadze)Our World as an Expanding Shell (M Gogberashvili)and other papers Readership: Researchers in high energy physics, cosmology and astrophysics. Keywords:
Towards CMB polarization measurements Since 1992 [ 1 ] , Cosmic Microwave Background ( CMB ) cosmology made a huge leap forward towards the era of high - precision measurements . The highresolution map data returned from experiments ...
Author: Ana M. Mourão
Publisher: World Scientific Publishing Company Incorporated
In international workshops on "New Worlds in Astroparticle Physics" held biannually, astronomers, astrophysicists and particle physicists discuss recent developments in the exciting and rapidly developing field of Astroparticle Physics. Similar to previous workshops, this 5th international workshop introduced experimental, observational and theoretical subjects through review lectures. This was followed by shorter contributions on the recent developments in Astroparticle Physics. This workshop covered an array of subjects like cosmic rays, gravitational waves, space radiation, neutrino physics, cosmological parameters, black holes, dark matter and dark energy.