X-ray astronomy : proceedings of the XV ESLAB Symposium, held in Amsterdam, the Netherlands, 22-26 June 1981

The 15th ESLAB symposium was held at the end of June 1981 in Amsterdam with the topic being X-ray astronomy. The aim of this symposium was to bring together the international astrophysical community in order to 1. review the present state of X-ray astronomy in the light of new observations gathered in recent missions and to review data on interesting objects in correlated wavelen8th regions; 2. discuss theoretical models describing the phenomena observed; 3. present ESA's European X-ray Observatory Satellite (EXOSAT) and to discuss future X-ray missions and their associated instrumenta­ tion. These topics seemed to be so interesting for the scientific community that more than 120 contributions were submitted. Of these, 94 were finally accepted and approximately 200 participants attended the 5-day meeting. The symposium was organised in nine sessions covering the whole field. Every main topic was introduced by a review lecture covering the state­ of-the-art. The aim of the meeting was to assess the impact of the new X-ray findings on the general astronomical knowled8e. The discussion ranged from non-degenerated stellar X-ray sources and stellar coronae tL supernovae, bursters, globular clusters, normal galaxies and finally to cosmology. In each field the philosophy was to bring together the relevant information obtained in radio, optical and X-ray observations followed by theoretical discussions. A large number of contributed papers were also presented within this framework. Front Matter....Pages i-xiii Front Matter....Pages 1-1 X-Ray Astronomy in the Einstein Era....Pages 3-32 An X-Ray Survey of Flat Spectrum Radio Sources....Pages 33-37 X-Ray Emission from Active Galaxies....Pages 39-45 Ariel-6 Medium Energy Spectral Observations of Active Galaxies....Pages 47-54 “Einstein” Observations of BL Lacertae Objects....Pages 55-58 An X-Ray Selected List of QSOs: Implications for the QSO Luminosity Function and the Origin of the Diffuse X-Ray Background....Pages 59-59 X-Ray Observations of Emission Line Galaxies with the Einstein Observatory....Pages 61-65 Optical Identification of X-ray Sources in the Einstein Observatory Medium and Deep Surveys....Pages 67-73 The Einstein Observatory Medium Sensitivity Survey....Pages 75-80 On the Properties of 21 X-Ray Globular Clusters in M31....Pages 81-84 Front Matter....Pages 85-85 Physical Processes for X-Ray Emission in Galactic Nuclei....Pages 87-99 The X-Ray Background 2–50 keV: A Superposition of Known Sources, or Evidence of a New Component?....Pages 101-105 NGC 4151 and MCG 8-11-11: Two X-Ray Seyfert Galaxies with Strong Soft γ-Ray Emission....Pages 107-112 The X-Ray Luminosity Function and Source Counts for Seyferts....Pages 113-118 Ultraviolet, Optical and X-Ray Monitoring of the Continuum of NGC 4151....Pages 119-122 X-Rays from Active Galactic Nuclei — Hard Component....Pages 123-127 Is PKS 2155 an Extragalactic Source?....Pages 129-133 X - Ray Emission from Galactic Jets....Pages 135-140 A Soft X-Ray Study of the Large Magellanic Cloud....Pages 141-141 A Study of M100 in X-Rays....Pages 143-147 Front Matter....Pages 149-149 Low Luminosity Galactic X-Ray Sources....Pages 151-179 High X-Ray Luminosity from Dynamo Stars....Pages 181-184 X-Ray Spectroscopic Investigation of the Coronal Structure of Capella....Pages 185-189 Coronal Activity in F-, G-, and K-Type Stars....Pages 191-199 Ariel 6 Observations of the Hot White Dwarf HZ43....Pages 201-205 Infrared Photometry of the X-Ray Stars in Cygnus OB2(VI Cygni): Preliminary Results....Pages 207-212 Rapid Oscillations in SS Cygni....Pages 213-219 Variability of Soft X-Ray Emission of EX Hydrae Observed with Einstein Observatory....Pages 221-229 UV Observations of MV Lyrae....Pages 231-233 Ultraviolet Observations of the X-Ray Sources in the Eta Carinae Nebula....Pages 235-239 Front Matter....Pages 241-241 Cosmic X-Ray Observations Performed with a Gas Scintillation Spectrometer....Pages 243-249 X-Ray Images of the Supernova Remnant Puppis A....Pages 251-251 Spectral Observation of the Soft X-Ray Background and of the North Polar Spur with Solid State Spectrometers....Pages 253-257 Hard X-Ray Structure of the Crab Nebula....Pages 259-262 On Synchrotron Nebulae and Pulsars....Pages 263-263 Cooling of Neutron Stars and X-Ray Observations....Pages 265-271 First UV Observations of the Optical Counterpart of the X-Ray Source 2S0114+650....Pages 273-277 Optical Observations of the X-Ray Source 2S0921-630....Pages 279-286 Ultraviolet Study of V1341 Cyg = Cyg X-2. Observation of an Accretion Disk....Pages 287-292 Einstein Observations of the Galactic Centre....Pages 293-299 Front Matter....Pages 241-241 Soft X-Ray Sources and Their Optical Counterparts in the Error Box of the COS-B Source 2CG 135+01....Pages 301-306 Front Matter....Pages 307-307 X-Ray Binaries and Stellar Evolution....Pages 309-309 Hard X-Ray Balloon Observations of Compact Galactic and Extragalactic X-Ray Sources....Pages 311-323 High Energy X-Ray Spectrum of Her X-1....Pages 325-325 Hard X-Rays Observation of Her X-1....Pages 327-330 New Hard X-Rays Sources at 38° Declination....Pages 331-334 Models for Accretion Flow on to Neutron Stars and X-Ray Photon-Electron Interactions in Ultra-High Magnetic Fields....Pages 335-335 Observability of Magnetically Strongly Shifted Iron Line Emission from X-Ray Pulsars....Pages 337-340 Magnetic Alignment and Counter-Alignment in Binary X-Ray Pulsars....Pages 341-346 Ariel VI Observations of Sco X-1....Pages 347-351 Periodic Behaviour in Three Galactic Bulge Sources....Pages 353-360 Optical Properties of Low-Mass X-Ray Binaries....Pages 361-364 New Optical Observations of 2S 0921-630 and Its Relation to Other X-Ray Binaries....Pages 365-366 Front Matter....Pages 367-367 Ariel 6 Observations of Cyg X-1 in the High State....Pages 369-371 Ariel VI Soft X-Ray Observations of Cygnus X-1....Pages 373-378 Power Spectral Density Analysis of Hard X-Ray Emission of Cyg X-1....Pages 379-384 Search for Fast Time Fluctuations in Cygnus-X1 and Herculis-X1....Pages 385-388 X-Ray Absorption in Circinus X-1 in the Low State....Pages 389-393 Time Variation of the Pulse Period of Vela X-1....Pages 395-398 Observation of an Outburst from the X-Ray Pulsator 0115+63....Pages 399-403 Front Matter....Pages 367-367 The Optical Light Curve of LMC X-4 and the 30-Day X-Ray Period....Pages 405-406 Ultraviolet and Optical Observations of HDE 245770/ A 0535+26 System during an X-Ray Flare....Pages 407-414 Recent Optical Observations of the X-Ray Pulsar 4U 1626-67....Pages 415-417 COS-B X-Ray Observations of Cyg X-3; An Indication for Apsidal Motion....Pages 419-421 An Optical Outburst from the Periodic Recurrent X-Ray Transient A0538-66....Pages 423-431 The X-Ray Source A0538-66 in Optical Quiescence....Pages 433-439 The Periodic X-Ray Transient A0538-66 and Its Optical Counterpart....Pages 441-446 Ariel 5 Observations of GX 339-4....Pages 447-449 Front Matter....Pages 451-451 Highlights of Results from Hakucho....Pages 453-456 The Ariel V Sky Survey of Fast-Transient X-Ray Outbursts....Pages 457-460 Periodic X-Ray Outbursts from A0535+26, 2S1145-619 and GX301-2....Pages 461-466 X-Ray and Optical Observations of the November 19, 1978 Gamma-Ray Burst Source Region....Pages 467-470 Are γ-Ray Bursters Neutron Stars Accreting Interstellar Matter ?....Pages 471-474 Discovery of Rapid Optical Variability in GX 339-4....Pages 475-476 Front Matter....Pages 477-477 The EXOSAT Mission....Pages 479-494 The X-Ray Imaging Telescopes on EXOSAT....Pages 495-511 The Medium Energy Instrument on EXOSAT....Pages 513-524 The Gas Scintillation Proportional Counter on EXOSAT....Pages 525-534 Front Matter....Pages 535-535 X-Ray Astronomy in the Future....Pages 537-564 Future Programme of X-Ray Astronomy in Japan....Pages 565-568 Front Matter....Pages 535-535 The ROSAT Mission....Pages 569-573 Development of a 1m-Normal-Incidence-EUV Telescope....Pages 575-580 The Use of Diamond Turned & Replicated Wolter 1 Telescopes for High Sensitivity X-Ray Astronomy....Pages 581-589 The Capabilities of a Gas Scintillation Camera for Cosmic X-Ray Astronomy....Pages 591-600 A Pseudo Random Mask Telescope for Spacelab....Pages 601-605 Spherical Crystal Cosmic X-Ray Spectrometer....Pages 607-614 Wide Angle X-Ray Optics for Use in Astronomy....Pages 615-621 X-Ray Binaries and Stellar Evolution....Pages 623-642 continues to be extremely rewarding. Experiments on future missions, such as the two 1981 Veneras, Gamma Ray Observatory, and the International Solar Polar Mission, will undoubtedly provide new and unexpected discoveries, but the work of the Leningrad group is likely to remain an important contribution to the field for some time to come. c.E.S.R. KEVIN HURLEY Toulouse, France June 9, 1981 CATALOG OF COSMIC GAMMA-RAY BURSTS FROM THE KONUS EXPERIMENT DATA Parts I and II E. P. MAZETS, S. V. GOLENETSKII, V. N. IL'INSKII, V. N. PANOV, R. L. APTEKAR, YU. A. GUR'YAN, M. P. PROSKURA, 1. A. SOKOLOV, Z. Y A. SOKOLOV A, and T. V. KHARITONOV A A. F. Ioffe Physical-Technical Institute, U.S.S.R. Academy of Sciences, Leningrad, U.S.S.R. and A. V. DYATCHKOV and N. G. KHAVENSON Institute of Cosmic Research, U.S.S.R. Academy of Sciences, Moscow, U.S.S.R. (Received 2 July, 1980) Abstract. Data are presented on the temporal structure, fluxes, energy spectra and coordinates of the sources of gamma-ray bursts detected in the KONUS experiment on Venera 1 I and Venera 12 space probes in the period September 1978 to May 1979. The statistical distributions of gamma bursts in duration, intensity, and peak power, as well as the distribution of the burst sources over the celestial sphere presented are based on the updated KONUS information obtained until February 1980.