The idea for organizing an Advanced Study Institute devoted largely to neutron star timing arose independently in three places, at Istanbul, Garching and Amster­ dam; when we became aware of each other's ideas we decided to join forces. The choice of a place for the Institute, in Turkey, appealed much to us all, and it was then quickly decided that Qe§me would be an excellent spot. When the preparations for the Institute started, early in 1987, we could not have guessed how timely the subject actually was. Of course, the recently dis­ covered QPO phenomena in accreting neutron stars and half a dozen binary and millisecond radio pulsars known at the time formed one of the basic motivations for organizing this Institute. But none of us could have guessed that later in 1987 we were to witness the wonderful discovery of the binary and millisecond radio pulsars in globular clusters and, -as if Nature wished to give us a special present for this the discovery in March 1988 of a millisecond pulsar in an eclipsing binary Institu- system, the first eclipsing radio pulsar ever found, and the second fastest in the sky! The discussion of this pulsar, its formation and fate was one of the highlights of this meeting, especially since its discoverers were among the participants of the Institute and could provide us with first-hand information.

Inhalt

I. Timing Neutron Stars: General Techniques and Applications.- Pulsar timing.- Timing binary and millisecond pulsars.- Fourier techniques in X-ray timing.- Deterministic chaos in accreting neutron star systems.- Detection and description of periodicities in sparse data. Suggested solutions to some basic problems.- Timing a millisecond pulsar array.- The scaling of radio pulsar timing noise with spin parameters.- Simulation of interstellar scattering effects on pulsar timing.- II. Observing Neutron Stars: Radio - X-Rays - Gamma-Rays.- II-1. Radio.- The radio emission from pulsars.- A timing analysis of the Clifton and Lyne pulsars.- Slowdown rate and oscillations in the Crab pulsar.- A search for millisecond pulsars in globular clusters.- A millisecond pulsar in an eclipsing binary.- II-2. X-Rays.- X-ray observations of accreting neutron stars.- Galactic populations of X-ray binaries.- Transient X-ray sources with late type companions.- Chaotic dynamics in the X-ray variability of Her X-1.- The X-ray source in the core of 47 Tucanae.- A new 60-msec X-ray pulsar and its massive Early- Type companion.- Non-Planckian behaviour of burst spectra: dependence of the blackbody radius on the duration of bursts.- X-ray spectral variability of low-mass X-ray binaries.- Fractal and Chaotic time variation in Cygnus X-1.- Analysis of the optical orbital lightcurve of the black hole candidate LMC X-S.- The luminosity dependence of the pulse period and profile of the transient X-ray pulsar EXO 2080+875.- Spectral classification of bright LMXB's with color-color diagrams.- X-rays from a possible pulsar in supernova 1987A.- X-ray observations of SN1987A with a coded mask imaging spectrometer.- SS433: a black hole candidate?.- II-3. Gamma-Rays.- Solitary neutron stars as gamma-ray sources.- Balloon observation of the Crab pulsar in the energy range 0.2-6 MeV.- Production sites and mechanisms of discrete gamma-ray components of the Vela and Crab light curves.- New time signatures in neutron stars and pulse-height variability in Crab.- Search for linear polarization in high energy gamma-ray sources.- VHE gamma ray emission from Centaurus X-8.- Observation of TeV gamma-rays from the Crab nebula and PSR 0581.- PSR 1509-58: a possible outer gap gamma ray source.- The origin of high-energy radiation from the Crab pulsar.- II-4. Future Programs.- Future U.S. X-ray programs related to timing neutron stars.- Future European programs in X-ray Astronomy.- Prospects for pulsar searches with gamma ray observatory GRO.- III. Internal Structure of Neutron Stars.- Inside neutron stars.- Vortex creep dynamics: theory and observations.- Superfluidity in the interiors of neutron stars.- Radiation from cooling neutron stars.- A model of pulsar timing noise.- Soliton stars and the cosmic X-ray background.- IV. Birth and Evolution of Neutron Stars.- Stellar evolution and the formation of neutron stars in binary systems.- Core collapse with rotation and neutron star formation.- Neutron star evolution and the birth properties of radio pulsars.- X-ray binaries and radiopulsars in globular clusters.- The evolution of pulsars.- The origin of pulsar velocities and the velocity magnetic moment correlation.- The white dwarf - neutron star connection.- Pulsar turn-on and secondary evaporation in the pulsar 1957+20 binary.- V. Magnetospheres, Accretion Processes and Columns.- Accretion by Magnetic Neutron Stars.- Self-consistent modelling of pulsar magnetospheres.- Smearing of X-ray oscillations by electron scattering.- Iterative scattering approach to radiative transfer.- Radiative transfer in optically thick plasmas of accretion columns.- A model for spherically symmetric accretion onto neutron stars.- Subject and Object Index.