Sources and Scintillations

Refraction and Scattering in Radio Astronomy IAU Colloquium 182

Richard Strom, Peng Bo, Mark Walker, Nan Rendong (Herausgeber)

Buch | Softcover

265 Seiten

2012 | Softcover reprint of the original 1st ed. 2001
Springer (Verlag)
978-94-010-3879-9 (ISBN)

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The genesis of IAU Colloquium 182, 'Sources and scintillations: refraction and scattering in radio astronomy,' can be traced to the desire, on the one hand, of Beijing Astronomical Observatory radio astronomers to organize a conference which would highlight the need for high sensitivity - as a way ofpromoting their own project to build the world's largest telescope (FAST) - and to a suggestion from Ron Ekers on the other. During a discussion with the two SOC co-chairs (as they then were not) in January 1999 in Epping, Ron noted the success ofa meeting on 'radio seeing' in Beijing in 1989, and wondered whether the time might not be ripe to organize another conference devoted to radio propagation. This set the ball rolling, and with enthusiastic input from SOC members, a successful application was made to the IAU. Later, the URSI also agreed to co-sponsor the meeting. From April 17-21, 2000, over 80 astronomers from a dozen countries met in Guiyang, China, to discuss the latestexciting results and theoretical ideas on radio propagation through interstellar, intergalactic and interplanetary space. These pro ceedings include almost all (95%) ofthe oral presentations given at the conference. In addition to the 52 talks presented during 5 days of the Colloquium, Ron Ekers gave a fine summary at the end to tie things up. There were also poster sessions where some twenty papers were displayed. Besides the scientific sessions, the LOC had organized a program for spouses and otheraccompanying persons.

One: Introduction to Interstellar Scintillation.- Radio Sources and scintillation.- The galactic distribution of electron density microstructure inferred from radio scattering observations.- Incompressible MHD turbulence.- Pulsar scintillation: Overview and some recent results.- Two: Pulsars: Their Scattering And Intrinsic Properties.- The Parkes multibeam pulsar survey and interstellar scattering.- The study of scattering effects by VLBI observations of PSR 1329+54 with HALCA at 1650 MHZ.- Frequency structure of radio scintillations for several pulsars.- Optimizing pulsar searches against propagation effects.- Scattering of the low frequency pulsar radiation.- Scintillation observations of strong northem pulsars.- Giant radio pulses from pulsars.- Studying pulsar emission regions using interstellar scattering.- Pulsar investigation using interstellar scintillation.- Propagation of electromagnetic waves in pulsar magnetospheres.- Looking into pulsar magnetospheres.- Three: Intra-Day Variability, Gravitational Lensing and Polarization.- Radio intra-day variability: answers and questions.- Variability observations of a complete sample of flat-spectrum radio soures: preliminary results.- YSOP observations of the BL Lac object 2007+777.- Monitoring the microarcsecond quasar J1819+3845.- Multi-frequency studies of intrinsic intraday variability.- Examples of extreme intraday variability.- Multifrequency polarization variations in 0917+624.- Gravitational lensing.- ISS of polarized compact extragalactic radio sources.- Strong, variable circular polarization in PKS 1519-273.- The microarcsecond quasar J1819+3845: polarization observations and detailed lightcurve analysis.- Magnetic fields in quasar 3C147 on milliarcsecond scales.- Four: Extreme Scattering Events, Distributionof Material and Ips.- Interpretation of extreme scattering events.- Extreme scattering events: an observational summary.- An ESE event for PSR 0329+54.- Interstellar scintillation and clouds of the interstellar turbulent plasma.- Interstellar scintillation studies of pulsars and distribution of scattering plasma in the local interstellar medium.- The radio luminosity ofpulsars and the distribution of interstellar electron density.- Magnetic fields in our galaxy: how much do we know?.- Investigations of AGNS by the interplanetary scintillation method.- IPS observations art Miyun Station, BAO.- VLA observations of angular broadening close to the sun.- On post-SKA radio astronomy.- Australian research effort for the SKA.- Active adaptive arrays: the astron approach to SKA.- The FAST/SKA site selection in Guizhou Province.- Five-hundred meter aperture spherical telescope project.- Analysis for reftector aluminum mesh panels of five-hundred meter aperture spherical telescope.- Structural analysis of FAST reflector supporting system.- Modelling, simulation and testing of an optomechatronics design of a large radio telescope.- On the cable car feed support configuration for FAST.- Trying to enlarge the sky coverage of the FAST.- Extending the observable zenith angle of FAST using an offset feed.- The control system of the active main reflector for FAST.

Zusatzinfo	VII, 265 p.
Verlagsort	Dordrecht
Sprache	englisch
Maße	160 x 240 mm
Themenwelt	Naturwissenschaften ► Physik / Astronomie ► Astronomie / Astrophysik
ISBN-10	94-010-3879-1 / 9401038791
ISBN-13	978-94-010-3879-9 / 9789401038799
Zustand	Neuware