1# Library to Find Best eBook for Read
Author : Milan Bogosavljević
Release : 2015
Genre : Electronic dissertations
Kind : eBook
Book Rating : /5 ( reviews)
Book Synopsis Lyman Continuum and Lyman Alpha Emission from Galaxies at High Redshift by : Milan Bogosavljević
Download or read book Lyman Continuum and Lyman Alpha Emission from Galaxies at High Redshift written by Milan Bogosavljević. This book was released on 2015. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Steven Arthur Dawson
Release : 2005
Genre : Science
Kind : eBook
Book Rating : 942/5 ( reviews)
Book Synopsis Lyman Alpha Emitting Galaxies at High Redshift by : Steven Arthur Dawson
Download or read book Lyman Alpha Emitting Galaxies at High Redshift written by Steven Arthur Dawson. This book was released on 2005. Available in PDF, EPUB and Kindle. Book excerpt: As late as 1995, the anticipated widespread population of primeval galaxies remained at large, lurking undetected at unknown redshifts, with undiscovered properties. We present results from our efforts to detect and characterize primeval galaxies by their signature high-redshift Lyman-alpha emission lines utilizing two observational techniques: serendipitous slit spectroscopy and narrowband imaging. By pushing these techniques to their utmost limits, we probe the Lyman-alpha-emitting galaxy population out to redshifts as high as z = 6.5. Galaxies at this epoch reside in a universe which is just 800 million years old, a mere 6% of its current age. As such, this work provides one account of the manner by which observational cosmology has recently shifted from merely marveling at the incredible lookback times implied by the first few high-redshift detections, to the routine assembly of high-redshift datasets designed to address specific astrophysical issues.
Author : Josephine Victoria Kerutt
Release : 2019
Genre :
Kind : eBook
Book Rating : /5 ( reviews)
Book Synopsis The High-redshift Voyage of Lyman [alpha] and Lyman Continuum Emission as Told by MUSE by : Josephine Victoria Kerutt
Download or read book The High-redshift Voyage of Lyman [alpha] and Lyman Continuum Emission as Told by MUSE written by Josephine Victoria Kerutt. This book was released on 2019. Available in PDF, EPUB and Kindle. Book excerpt: Most of the matter in the universe consists of hydrogen. The hydrogen in the intergalactic medium (IGM), the matter between the galaxies, underwent a change of its ionisation state at the epoch of reionisation, at a redshift roughly between 6>z>10, or ~10^8 years after the Big Bang. At this time, the mostly neutral hydrogen in the IGM was ionised but the source of the responsible hydrogen ionising emission remains unclear. In this thesis I discuss the most likely candidates for the emission of this ionising radiation, which are a type of galaxy called Lyman alpha emitters (LAEs). As implied by their name, they emit Lyman alpha radiation, produced after a hydrogen atom has been ionised and recombines with a free electron. The ionising radiation itself (also called Lyman continuum emission) which is needed for this process inside the LAEs could also be responsible for ionising the IGM around those galaxies at the epoch of reionisation, given that enough Lyman continuum escapes. Through this mechanism, Lyman alpha and Lyman continuum ...
Author : Michael A. Dopita
Release : 2013-06-29
Genre : Science
Kind : eBook
Book Rating : 669/5 ( reviews)
Book Synopsis Astrophysics of the Diffuse Universe by : Michael A. Dopita
Download or read book Astrophysics of the Diffuse Universe written by Michael A. Dopita. This book was released on 2013-06-29. Available in PDF, EPUB and Kindle. Book excerpt: The reference work on astrophysics to provide a comprehensive introduction to the physics of Interstellar Matter. The objective of the book is to show how physics can be applied to the understanding and diagnosis of the phase structure, the physical conditions and the chemical make-up and evolution of the interstellar medium. Unlike other textbooks in the field, here a more systematic approach has been adopted based on the authors' lecture course experience. It is aimed primarily at those undertaking post-graduate courses, or those doing advanced projects as part of honours undergraduate courses in physics or astrophysics.
Author :
Release : 2002
Genre :
Kind : eBook
Book Rating : /5 ( reviews)
Book Synopsis Emission Line Galaxies from CADIS by :
Download or read book Emission Line Galaxies from CADIS written by . This book was released on 2002. Available in PDF, EPUB and Kindle. Book excerpt: And with model predictions, indicates that bright Ly-alpha galaxies are so rare beyond z=5 that a non-evolving population can be excluded.
