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Frontiers of Space and Ground-Based Astronomy : The Astrophysics of the 21st Dentury

The Astrophysics of the 21st Dentury

By: Wamsteker, M. S. Longair, Yoji Kondo

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Hardcover | 1 August 1994

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Hardcover
796 Pages

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25.4 x 17.78 x 3.81

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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.

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Non-Fiction Science Physics Applied Physics Astrophysics Astronomy, Space & Time Cosmology & The Universe Relativity Physics Geophysics Classical Mathematics Gravity

Editorial
Welcoming Address
Opening Address
The Gamma-Ray Sky According to Compton: A New Window to the Universe	p. 5
Comptel View of the Sky in MEV Gamma Rays	p. 17
Galactic Hard X-Ray Sources Viewed by Sigma	p. 23
Review of Galactic Center Observations with Granat	p. 35
Highlights of Rosat	p. 47
ASCA and Yohkoh: The Current Generation of Small Japanese Satellites	p. 53
EUV Astronomy with the Rosat Wide Field Camera	p. 57
Preliminary Science Results from the Extreme Ultraviolet Explorer	p. 67
15 Years of IUE	p. 77
Highlights of the Hubble Space Telescope	p. 87
The Contribution of Hipparcos to Fundamental Astronomy	p. 95
Recent Results from the Cosmic Background Explorer (COBE)	p. 105
Maintaining the Astronomical Environment for Space Astronomy	p. 113
Large Ground-Based Telescopes	p. 123
Ground Based Infrared Astronomy	p. 129
New Directions for Millimeter Astronomy in the 21st Century	p. 133
Very Long Baseline Interferometry: Recent Results and Future Prospects	p. 145
The Importance of Synthesis Radio Telescopes	p. 155
The Maintenance of the Astronomical Environment for Ground Based Astronomy	p. 165
A Selection of 10 Most Topical Stellar Problems	p. 177
Seismology of the Sun and Stars	p. 187
Star Clusters	p. 201
Novae and Other Cataclysmic Variables: Understanding the Effects of Accretion on a White Dwarf	p. 211
Binary Stars in the Era of Space Age Astronomy	p. 219
On the Road to Understanding Star Formation	p. 235
Supernovae	p. 249
Neutron Stars and Black Holes in X-Ray Binaries	p. 265
A Review of Pulsar Astronomy	p. 277
The ISM Within 300 PC and the Nature of the Intercloud Medium	p. 289
Deuterium in the Local Interstellar Medium: Its Cosmological Significance	p. 301
The Magellanic Clouds	p. 305
Structure of Galaxies	p. 315
The International AGN Watch: A Multiwavelength Monitoring Consortium	p. 325
Jets in Active Galactic Nuclei	p. 335
The High Energy Continuum of AGNS: Thermal or Non-Thermal?	p. 347
Clusters of Galaxies	p. 359
Classical Cosmology	p. 369
The Extragalactic X-Ray Background: Rosat Observations	p. 381
The Cosmological Evolution of Active Galaxies	p. 395
Gravitational Lensing as a Tool: Future Observational Prospects	p. 409
Panel Discussion on Coordination of Observations at Many Wavelengths	p. 423
Panel Discussion: New Generation of Large Ground Based Telescopes	p. 435
ESO VLT Program Status Report	p. 447
The International Stratospheric Laboratory for Astrophysics, ISLA	p. 453
Panel Discussion: New Generation Space Telescopes	p. 459
Integral - Fine Spectroscopy and Fine Imaging of Celestial Gamma-Rays	p. 475
Multi-Wavelength Observations with the XMM Observatory	p. 487
Astrophysics with XSPECT/SODART on Spectrum X-Gamma	p. 497
Wide Band X-Ray Astronomy with the Sax Satellite	p. 499
Elf: The European Participation in Lyman-Fuse	p. 501
The Spectrum-UV Project	p. 505
Trust: An Ultraviolet Sky Survey Project	p. 507
An Advanced Camera for the Hubble Space Telescope	p. 509
The Infrared Space Observatory: ISO	p. 513
The Atlas Sirtf	p. 517
The Edison Space Observatory and the Future of Infrared Astronomy in Space	p. 521
First Far Infrared and Submillimetre Space Telescope	p. 523
New Technologies for Astronomy	p. 527
The AIPS[superscript ++] Project	p. 533
Optical Photon Detection Using Superconducting Tunnel Junctions	p. 537
Panel Discussion - Summary: Priorities and Objectives for the 21st Century	p. 543
Multi-Waveband Behaviour of the T Tauri-Star RU LUPI	p. 553
Multiwavelength Study of Protoplanetary Clouds Around Herbig AE/BE Stars	p. 555
Detection of a Bipolar Flow Associated with UX ORI: An Intermediate-Mass Pre-Main Sequence Star	p. 559
IUE Observations of the Socket Star MT ORI and Its Circumstellar Environment	p. 561
The Spectral Energy Distribution and the UV Excess in the Herbig BE Candidate HD 45677	p. 563
A Multi-Wavelength Study of WR140 (HD 193793, WC7+04-5) - A Colliding Wind Binary	p. 565
Simultaneous Optical and UV Observations of Wind Variability in O-Type Stars	p. 567
X-Ray Emission from Colliding Stellar Winds	p. 571
Multi-Waveband Behaviour of X-Ray/Be Systems: The Case of A0535+26/HDE 245770	p. 573
Far and Extreme Ultraviolet Spectroscopy of Hot White Dwarfs: A Laboratory for Element Diffusion	p. 575
The Ultraviolet Spectrum of an Extremely Metal Deficient Star: HD 52961	p. 579
AS 304: Does IUE Discover the Youngest Symbiotic Star?	p. 581
An Atlas of IUE LWR Low Resolution Spectra of K Stars	p. 583
K Stars: Analysis of IUE-LW Fluxes	p. 585
Acoustically Heated Chromospheres in M Dwarfs	p. 587
The Study of the Stellar Activity-Age Correlation in Field Star Samples Through Lithium Abundance Studies	p. 589
Chromospheres in Red Giants	p. 593
Class I Luminosity Functions	p. 595
The Blazhko Effect in RR Lyrae	p. 597
A Statistical View of Cataclysmic Variables with the IUE	p. 599
The Interoutburst Behavior of the Recurrent Nova T PYX	p. 601
UV Light-Curve of SN1987A	p. 605
A Multiwavelength Study of Stellar Winds in HMXRBS	p. 607
Multi-Wavelength Study of Light Pulsations in the Intermediate Polar H2215-086	p. 609
GX 5-1 with Exosat: How to Become a Z-Source	p. 611
Rapid Infrared Flares in Cygnus X-3	p. 615
Multi-Wavelength Observations of the AM CVN Systems	p. 617
Fast Timing Behaviour of Circinus X-1	p. 619
Line Features in PSDS of X-Ray Binaries	p. 621
Radio Observations of Transient Gamma-Ray Sources with the Westerbork Array	p. 623
Rosat Observations of Young Stellar Clusters	p. 629
Are There Two Populations of Blue Straggler Stars in the Globular Cluster M3?	p. 631
Hot Stars in the Core of 47 TUC from NTT and HST Observations	p. 633
Blue Straggler Stars in the Inner Region of the Globular Cluster M15	p. 639
HST Observations of Ultraviolet Interstellar Polarization	p. 643
High Resolution Spectra with HST of Shocked Clouds in the Vela Remnant	p. 645
CNO Abundances in High-Redshift Absorption Line Systems of the QSO HS 1700+6416	p. 649
The Lyman [alpha] Forest and the Universal Bubble Structure	p. 651
HST Spectra of Stellar Populations	p. 653
IUE/HST-FOC Search for Hot Stars in Nearby Galaxies	p. 655
Eclipsing Binaries as Accurate Distance Indicators to Nearby Galaxies	p. 657
The Impact of High Resolution Imaging on Stellar Astrophysics	p. 659
Globular Clusters in M31 with the Hubble Space Telescope	p. 661
HST/FOS UV-Spectroscopy of Weak Radio Galaxies at Z=0.1-0.6	p. 663
High-Redshift Radio Galaxies with the HST	p. 669
The Lockman Hole: Radio Identification of Very Faint Rosat Sources	p. 673
VLBI Observations of Radio Galaxies	p. 675
The Medium-Deep Survey Using the Hubble Space Telescope	p. 677
The X-Ray Spectra of Blazars: Analysis of the Complete Exosat Archive	p. 681
Active Galactic Nuclei Across the Electromagnetic Spectrum	p. 685
Multifrequency Spectra of Blazars	p. 687
UV/Optical Microvariability in Seyfert Galaxies	p. 691
Multiwavelength Evolution of the 1991 Outburst of 3C 345	p. 693
Simultaneous ROSAT, GINGA, VLA, IUE and Optical Observations of the Bright Quasar H1821 + 643	p. 695
Ultra Heavy Cosmic Ray Measurements on the LDEF Satellite and the Merging of Multi-Waveband and Particle Astronomy	p. 699
A Very Large Area Telescope for Gamma-Ray Astronomy Above 100 MEV Employing Limited Streamer Tubes	p. 703
Very High Energy Gamma-Ray Astronomy with Ground-Based Imaging Cherenkov Telescopes	p. 705
Hard X-Ray Concentration for Future Space Astronomy Missions	p. 707
The Evolution of the IUE Archive	p. 709
The IUE Final Archive: Conception to Completion	p. 715
The Hexa-Pod-Telescope: The Mounting	p. 717
The Hexa-Pod-Telescope: The Optical Telescope Assembly	p. 719
The Optical Science and Technology Centre at Bochum - A New Partner for Observational Astronomy	p. 721
A 690 GHZ SIS Mixer	p. 723
The European Space Information System	p. 725
List of Participants	p. 729
Subject Index	p. 735
Acronym List	p. 743
Author Index	p. 747
Table of Contents provided by Blackwell. All Rights Reserved.

Frontiers of Space and Ground-Based Astronomy : The Astrophysics of the 21st Dentury

The Astrophysics of the 21st Dentury

At a Glance

Hardcover

Shipping

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