Panchromatic View Of Galaxies

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Panchromatic View Of Galaxies

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Author : Astronomische Gesellschaft (Germany). Meeting
language : en
Publisher: Atlantica Séguier Frontières
Release Date : 1994

Panchromatic View Of Galaxies written by Astronomische Gesellschaft (Germany). Meeting and has been published by Atlantica Séguier Frontières this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with Astronomy categories.

A Panchromatic View Of Galaxies

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Author : Alessandro Boselli
language : en
Publisher: John Wiley & Sons
Release Date : 2012-01-17

A Panchromatic View Of Galaxies written by Alessandro Boselli and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-01-17 with Science categories.

Describing how to investigate all kinds of galaxies through a multifrequency analysis, this text is divided into three different sections. The first describes the data currently available at different frequencies, from X-rays to UV, optical, infrared and radio millimetric and centimetric, while explaining their physical meaning. In the second section, the author explains how these data can be used to determine physical parameters and quantities, such as mass and temperature. The final section is devoted to describing how the derived quantities can be used in a multifrequency analysis to study such physical processes as the star formation cycle and constrain models of galaxy evolution. As a result, observers will be able to interpret galaxies and their structure.

A Pan Chromatic View Of Clusters Of Galaxies And The Large Scale Structure

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Author : Manolis Plionis
language : en
Publisher: Springer Science & Business Media
Release Date : 2008-02-29

A Pan Chromatic View Of Clusters Of Galaxies And The Large Scale Structure written by Manolis Plionis and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008-02-29 with Science categories.

The reviews presented in this volume cover a huge range of cluster of galaxies topics. Readers will find the book essential reading on subjects such as the physics of the ICM gas, the internal cluster dynamics, and the detection of clusters using different observational techniques. The expert chapter authors also cover the huge advances being made in analytical or numerical modeling of clusters, weak and strong lensing effects, and the large scale structure as traced by clusters.

Clusters Of Galaxies Beyond The Thermal View

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Author : Jelle Kaastra
language : en
Publisher: Springer Science & Business Media
Release Date : 2008-05-01

Clusters Of Galaxies Beyond The Thermal View written by Jelle Kaastra and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008-05-01 with Science categories.

The existence of soft excess emission originating from clusters of galaxies, de ned as em- sion detected below 1 keV in excess over the usual thermal emission from hot intracluster gas (hereafter the ICM) has been claimed since 1996. Soft excesses are particularly - portant to detect because they may (at least partly) be due to thermal emission from the Warm-Hot Intergalactic Medium, where as much as half of the baryons of the Universe could be. They are therefore of fundamental cosmological importance. Soft excess emission has been observed (and has also given rise to controversy) in a number of clusters, mainly raising the following questions: (1) Do clusters really show a soft excess? (2) If so, from what spatial region(s) of the cluster does the soft excess or- inate? (3) Is this excess emission thermal, originating from warm-hot intergalactic gas (at 6 temperatures of?10 K), or non-thermal, in which case several emission mechanisms have been proposed. Interestingly, some of the non-thermal mechanisms suggested to account for soft excess emission can also explain the hard X-ray emission detected in some clusters, for example by RXTE and BeppoSAX (also see Petrosian et al. 2008—Chap. 10, this issue; Rephaeli et al. 2008—Chap. 5, this issue).

From The Realm Of The Nebulae To Populations Of Galaxies

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Author : Mauro D'Onofrio
language : en
Publisher: Springer
Release Date : 2016-07-26

From The Realm Of The Nebulae To Populations Of Galaxies written by Mauro D'Onofrio and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-07-26 with Science categories.

In order to outline possible future directions in galaxy research, this book wants to be a short stopover, a moment of self-reflection of the past century of achievements in this area. Since the pioneering years of galaxy research in the early 20th century, the research on galaxies has seen a relentless advance directly connected to the parallel exponential growth of new technologies. Through a series of interviews with distinguished astronomers the editors provide a snapshot of the achievements obtained in understanding galaxies. While many initial questions about their nature have been addressed, many are still open and require new efforts to achieve a solution. The discussions may reveal paradigms worthwhile revisiting. With the help of some of those scientists who have contributed to it, the editors sketch the history of this scientific journey and ask them for inspirations for future directions of galaxy research.

The Multiwavelength Atlas Of Galaxies

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Author : Glen Mackie
language : en
Publisher: Cambridge University Press
Release Date : 2011-01-06

The Multiwavelength Atlas Of Galaxies written by Glen Mackie and has been published by Cambridge University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-01-06 with Science categories.

Since the radio signature of our own Milky Way was detected in 1931, galaxies have been observed from ultra-high energy gamma rays to long wavelength radio waves, providing fundamental insights into their formation, evolution and structural components. Unveiling the secrets of some of the best-observed galaxies, this atlas contains over 250 full-color images spanning the whole electromagnetic spectrum. The accompanying text explains why we see the component stars, gas and dust through different radiation processes, and describes the telescopes and instruments used. This atlas is a valuable reference resource on galaxies for students seeking an overview of multiwavelength observations and what they tell us, and researchers needing detailed summaries of individual galaxies. An accompanying website, hosted by the author, contains slide shows of the galaxies covered in the book. This is available at www.cambridge.org/9780521620628.

Unsolved Problems Of The Milky Way

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Author : Leo Blitz
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-11-11

Unsolved Problems Of The Milky Way written by Leo Blitz and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-11-11 with Science categories.

Although the Milky Way is the most studied and best understood galactic system, there are many fundamental questions about our Galaxy that remain unanswered. This book concentrates on those questions which have the widest applicability in all of astrophysics, and for which answers are most likely to be forthcoming in the next few years. Is the Milky Way a barred spiral, and if so, what are its properties? Is the disk of the Milky Way axisymmetric and what does the answer tell us about its dynamical history? Is there a black hole at the center of the Galaxy? How far does the Galaxy extend? How much dark matter is there in the Milky Way system? And more.

Exploring The Universe

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Author : Herbert Gursky
language : en
Publisher: World Scientific
Release Date : 2000

Exploring The Universe written by Herbert Gursky and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000 with Science categories.

This volume is dedicated to Riccardo Giacconi for his sixty-fifth birthday, on the occasion of his being awarded a ?Laurea Honoris Causa? in physics at the University of Rome ?La Sapienza?. A meeting was held in his honor, and presentations were given that reflected the state-of-the-art of research on subjects related to Giacconi's scientific interests and achievements through the decades. This volume is based upon the papers presented at that meeting. It provides a tribute to Riccardo Giacconi for his outstanding contributions towards opening up the entire field of high energy astrophysics.

Structure And Evolution Of The Intergalactic Medium From Qso Absorption Line Systems

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Author : Patrick Petitjean
language : en
Publisher: Atlantica Séguier Frontières
Release Date : 1997

Structure And Evolution Of The Intergalactic Medium From Qso Absorption Line Systems written by Patrick Petitjean and has been published by Atlantica Séguier Frontières this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997 with Absorption spectra categories.

Frontiers Of Space And Ground Based Astronomy

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Author : Willem Wamsteker
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06

Frontiers Of Space And Ground Based Astronomy written by Willem Wamsteker and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Science categories.

ROSAT Observations G. HASINGER Max-Planck-Institut flir extraterrestrische Physik, D-85740 Garching, Germany Abstract. This review describes the most recent advances in the study of the extragalactic soft X-ray background and what we can learn about its constituents. The deepest pointed observations with the ROSAT PSPC are discussed. The logN-logS relation is presented, which reaches to the faintest X-ray fluxes and to the highest AGN surface densities ever achieved. The N(>S) relation shows a 2 density in excess of 400 deg- at the faintest fluxes and a flattening below the Einstein Deep Survey limit. About 60% of the extragalactic background has been resolved in the deepest field. Detailed source spectra and first optical and radio identifications will be discussed. The results are put into perspective of the higher energy X -ray background. Key words: X-rays, background radiations, active galactic nuclei. 1. Introduction The extragalactic X-ray background (XRB), discovered about 30 years ago, has been studied extensively with many X-ray experiments, in particular with the satel lites HEAO I and II (see ego Boldt 1987) and with ROSAT (e. g. Hasinger et aI. , 1993). Figure 1 shows a compilation of some of the most recent spectral measure ments for the X-ray background. Over the energy range from 3 to about 100 keY its spectrum can be well approximated by an optically thin thermal bremsstrahlung model with kT ~ 40 keY, while at lower X-ray energies a steepening into a new component has been observed observed (e. g.