Constraining Dark Matter And Dark Energy Models Using Astrophysical Surveys
DOWNLOAD
Download Constraining Dark Matter And Dark Energy Models Using Astrophysical Surveys PDF/ePub or read online books in Mobi eBooks. Click Download or Read Online button to get Constraining Dark Matter And Dark Energy Models Using Astrophysical Surveys book now. This website allows unlimited access to, at the time of writing, more than 1.5 million titles, including hundreds of thousands of titles in various foreign languages. If the content not found or just blank you must refresh this page
Constraining Dark Matter And Dark Energy Models Using Astrophysical Surveys
DOWNLOAD
Author : Agnieszka M. Cieplak
language : en
Publisher:
Release Date : 2013
Constraining Dark Matter And Dark Energy Models Using Astrophysical Surveys written by Agnieszka M. Cieplak and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013 with categories.
This thesis addresses astrophysical probes to constrain dark matter (DM) and dark energy models. Primordial black holes (PBHs) remain one of the few DM candidates within the Standard Model of Particle Physics. This thesis presents a new probe of this PBH DM, using the microlensing of the source stars monitored by the already existing Kepler satellite. With its photometric precision and the large projected cross section of the nearby stars, it is found that previous constraints on PBH DM could theoretically be extended by two orders of magnitude. Correcting a well-known microlensing formula, a limb-darkening analysis is included, and a new approximation is calculated for future star selection. A preliminary prediction is calculated for the planned Wide-Field Infrared Survey Telescope. A preliminary study of the first two years of publicly available Kepler data is presented. The investigation yields many new sources of background error not predicted in the theoretical calculations, such as stellar flares and comets in the field of view. Since no PBH candidates are detected, an efficiency of detection is therefore calculated by running a Monte Carlo with fake limb-darkened finite-source microlensing events. It is found that with just the first 8 quarters of data, a full order of magnitude of the PBH mass range can be already constrained. Finally, one of the astrophysical probes of dark energy is also addressed - specifically, the baryon acoustic oscillations (BAO) measurement in the gas distribution, as detected in quasar absorption lines. This unique measurement of dark energy at intermediate redshifts is being measured by current telescope surveys. The last part of this thesis therefore focuses on understanding the systematic effects in such a detection. Since the bias between the underlying dark matter distribution and the measured gas flux distribution is based on gas physics, hydrodynamic simulations are used to understand the evolution of neutral hydrogen over time. It is found the location of the peak is a dependable measurement, but more robust simulations will have to be run for a full understanding of the shape and size of the peak.
Astrophysics Principles
DOWNLOAD
Author : Naveen Basu
language : en
Publisher: Educohack Press
Release Date : 2025-02-20
Astrophysics Principles written by Naveen Basu and has been published by Educohack Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2025-02-20 with Science categories.
Dive into the wonders of the universe with "Astrophysics Principles," an engaging and comprehensive book that explores the fundamental principles governing the behavior and phenomena of the cosmos. With a clear and accessible writing style, this book takes readers on a captivating journey through the vast realms of astrophysics, from the smallest particles to the largest cosmic structures. Starting with the foundational concepts of astrophysics, including the nature of light, the laws of gravity, and the properties of matter in space, the book progresses into the fascinating world of celestial bodies. It covers the life cycles of stars, the formation of galaxies, and the dynamics of black holes and neutron stars. One of the key strengths of "Astrophysics Principles" is its ability to make complex topics understandable without sacrificing depth, offering enlightening and engaging discussions on stellar evolution, cosmology, and the origins of the universe. The book also includes discussions on recent discoveries and developments in astrophysics, keeping the content relevant and up to date. Throughout the pages, illustrative diagrams, images, and real-world examples enhance the reader's understanding of abstract concepts. The inclusion of exercises and problem-solving sections further reinforces learning and allows readers to apply their knowledge. "Astrophysics Principles" is more than just a textbook; it is a journey of discovery for anyone fascinated by the cosmos. Whether you are a student, an enthusiast, or a professional in the field, this book serves as an invaluable resource for exploring the principles that govern our universe and the mysteries that continue to inspire scientific inquiry.
Dark Matter Evidence
DOWNLOAD
Author : Sophia Anderson
language : en
Publisher: Publifye AS
Release Date : 2025-02-22
Dark Matter Evidence written by Sophia Anderson and has been published by Publifye AS this book supported file pdf, txt, epub, kindle and other format this book has been release on 2025-02-22 with Science categories.
Dark Matter Evidence investigates the compelling scientific evidence for dark matter, a mysterious substance constituting about 85% of the universe's mass. This exploration is vital for grasping galaxy formation and the cosmos's large-scale structure. The book delves into astrophysical observations and particle physics research, revealing how galactic rotation curves defy Newtonian physics, suggesting unseen mass. Gravitational lensing, where massive objects bend light, further supports dark matter's presence, subtly altering the cosmic microwave background. The book systematically guides readers through complex topics, starting with the history of dark matter and fundamental concepts. It then explores key evidence, such as galactic rotation curves, gravitational lensing, and the cosmic microwave background, demonstrating how these observations converge to support the existence of dark matter. Leading particle candidates like WIMPs and axions are discussed, alongside ongoing detection efforts. The book's interdisciplinary approach connects astrophysics, particle physics, and cosmology, emphasizing the complementary nature of various experimental methods, including data from the Hubble Space Telescope and the Large Hadron Collider. It presents an authoritative and factual tone, making complex topics accessible while maintaining scientific rigor, addressing debates like Modified Newtonian Dynamics (MOND) and its viability against current evidence.
Dark Matter In Astrophysics And Particle Physics
DOWNLOAD
Author : Hans Volker Klapdor-Kleingrothaus
language : en
Publisher: World Scientific
Release Date : 2010
Dark Matter In Astrophysics And Particle Physics written by Hans Volker Klapdor-Kleingrothaus and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with Science categories.
Dark matter and dark energy are one of the central mysteries in modern physics, although modern astrophysical and cosmological observations and particle physics experiments can and will provide vital clues in uncovering its true nature. The DARK 2009 Conference brought together World?s leading researchers in both astrophysics and particle physics, providing an opportunity and platform to present their latest results to the community. The topics covered are wide-ranging, from terrestrial underground experiments to space experimental efforts to search for dark matter, and on the theoretical aspects, from the generating of a fifth family as origin of dark matter, extra dimensions and dark matter to non-standard Wigner classes and dark matter. One of the new highlights was certainly a possible connection between a neutrino mass as observed by nuclear double beta decay and the dark energy. Highly important and relevant in its field, the book presents a vital snapshot of the sometimes seemingly disparate areas of dark matter research and offers an exciting overview of current ideas and future directions.
The Invisible Universe Dark Matter And Dark Energy
DOWNLOAD
Author : Eleftherios Papantonopoulos
language : en
Publisher: Springer
Release Date : 2007-08-01
The Invisible Universe Dark Matter And Dark Energy written by Eleftherios Papantonopoulos and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007-08-01 with Science categories.
The nature and essence of Dark Matter and Dark Energy have become the central issue in modern cosmology over the past years. This extensive volume, an outgrowth of a topical and tutorial summer school, has been set up with the aim of constituting an advanced-level, multi-authored textbook which meets the needs of both postgraduate students and young researchers in the fields of modern cosmology and astrophysics.
Probing Cosmic Dark Matter And Dark Energy With Weak Gravitational Lensing Statistics
DOWNLOAD
Author : Masato Shirasaki
language : en
Publisher: Springer
Release Date : 2015-11-18
Probing Cosmic Dark Matter And Dark Energy With Weak Gravitational Lensing Statistics written by Masato Shirasaki and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-11-18 with Science categories.
In this book the applicability and the utility of two statistical approaches for understanding dark energy and dark matter with gravitational lensing measurement are introduced. For cosmological constraints on the nature of dark energy, morphological statistics called Minkowski functionals (MFs) to extract the non-Gaussian information of gravitational lensing are studied. Measuring lensing MFs from the Canada–France–Hawaii Telescope Lensing survey (CFHTLenS), the author clearly shows that MFs can be powerful statistics beyond the conventional approach with the two-point correlation function. Combined with the two-point correlation function, MFs can constrain the equation of state of dark energy with a precision level of approximately 3–4 % in upcoming surveys with sky coverage of 20,000 square degrees. On the topic of dark matter, the author studied the cross-correlation of gravitational lensing and the extragalactic gamma-ray background (EGB). Dark matter annihilation is among the potential contributors to the EGB. The cross-correlation is a powerful probe of signatures of dark matter annihilation, because both cosmic shear and gamma-ray emission originate directly from the same dark matter distribution in the universe. The first measurement of the cross-correlation using a real data set obtained from CFHTLenS and the Fermi Large Area Telescope was performed. Comparing the result with theoretical predictions, an independent constraint was placed on dark matter annihilation. Future lensing surveys will be useful to constrain on the canonical value of annihilation cross section for a wide range of mass of dark matter annihilation. Future lensing surveys will be useful to constrain on the canonical value of annihilation cross section for a wide range of mass of dark matter.
Sixteenth Marcel Grossmann Meeting The On Recent Developments In Theoretical And Experimental General Relativity Astrophysics And Relativistic Field Theories Proceedings Of The Mg16 Meeting On General Relativity In 4 Volumes
DOWNLOAD
Author : Remo Ruffini
language : en
Publisher: World Scientific
Release Date : 2022-12-15
Sixteenth Marcel Grossmann Meeting The On Recent Developments In Theoretical And Experimental General Relativity Astrophysics And Relativistic Field Theories Proceedings Of The Mg16 Meeting On General Relativity In 4 Volumes written by Remo Ruffini and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-12-15 with Science categories.
The proceedings of MG16 give a broad view of all aspects of gravitational physics and astrophysics, from mathematical issues to recent observations and experiments. The scientific program of the meeting included 46 plenary presentations, 3 public lectures, 5 round tables and 81 parallel sessions arranged during the intense six-day online meeting. All talks were recorded and are available on the ICRANet YouTube channel at the following link: www.icranet.org/video_mg16.These proceedings are a representative sample of the very many contributions made at the meeting. They contain 383 papers, among which 14 come from the plenary sessions.The material represented in these proceedings cover the following topics: accretion, active galactic nuclei, alternative theories of gravity, black holes (theory, observations and experiments), binaries, boson stars, cosmic microwave background, cosmic strings, dark energy and large scale structure, dark matter, education, exact solutions, early universe, fundamental interactions and stellar evolution, fast transients, gravitational waves, high energy physics, history of relativity, neutron stars, precision tests, quantum gravity, strong fields, and white dwarf; all of them represented by a large number of contributions.The online e-proceedings are published in an open access format.
Handbook Of X Ray And Gamma Ray Astrophysics
DOWNLOAD
Author : Cosimo Bambi
language : en
Publisher: Springer Nature
Release Date : 2024-02-29
Handbook Of X Ray And Gamma Ray Astrophysics written by Cosimo Bambi and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2024-02-29 with Science categories.
This book highlights a comprehensive coverage of X‐ray and Gamma‐ray astrophysics. The first and the second parts discuss, respectively, X-ray and Gamma-ray experimental techniques and observatories. The third part is devoted to science, including galactic and extragalactic sources. The fourth and last parts are dedicated to analysis techniques in X-ray and Gamma-ray astronomy: spectral analysis, imagining analysis, timing analysis, and polarimetric analysis. Presenting the state of the art in X-ray and gamma-ray astronomy, this is both a valuable book for students and an important reference resource for researchers in the field.
Quantum Theory And Symmetries
DOWNLOAD
Author : M. B. Paranjape
language : en
Publisher: Springer Nature
Release Date : 2021-03-26
Quantum Theory And Symmetries written by M. B. Paranjape and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-03-26 with Science categories.
This volume of the CRM Conference Series is based on a carefully refereed selection of contributions presented at the "11th International Symposium on Quantum Theory and Symmetries", held in Montréal, Canada from July 1-5, 2019. The main objective of the meeting was to share and make accessible new research and recent results in several branches of Theoretical and Mathematical Physics, including Algebraic Methods, Condensed Matter Physics, Cosmology and Gravitation, Integrability, Non-perturbative Quantum Field Theory, Particle Physics, Quantum Computing and Quantum Information Theory, and String/ADS-CFT. There was also a special session in honour of Decio Levi. The volume is divided into sections corresponding to the sessions held during the symposium, allowing the reader to appreciate both the homogeneity and the diversity of mathematical tools that have been applied in these subject areas. Several of the plenary speakers, who are internationally recognized experts in their fields, have contributed reviews of the main topics to complement the original contributions.
Issues In Astronomy And Astrophysics 2011 Edition
DOWNLOAD
Author :
language : en
Publisher: ScholarlyEditions
Release Date : 2012-01-09
Issues In Astronomy And Astrophysics 2011 Edition written by and has been published by ScholarlyEditions this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-01-09 with Science categories.
Issues in Astronomy and Astrophysics / 2011 Edition is a ScholarlyEditions™ eBook that delivers timely, authoritative, and comprehensive information about Astronomy and Astrophysics. The editors have built Issues in Astronomy and Astrophysics: 2011 Edition on the vast information databases of ScholarlyNews.™ You can expect the information about Astronomy and Astrophysics in this eBook to be deeper than what you can access anywhere else, as well as consistently reliable, authoritative, informed, and relevant. The content of Issues in Astronomy and Astrophysics: 2011 Edition has been produced by the world’s leading scientists, engineers, analysts, research institutions, and companies. All of the content is from peer-reviewed sources, and all of it is written, assembled, and edited by the editors at ScholarlyEditions™ and available exclusively from us. You now have a source you can cite with authority, confidence, and credibility. More information is available at http://www.ScholarlyEditions.com/.