Une pure merveille !
Un roman d'une grande beauté, drôle, fin, extrêmement lumineux sur des sujets difficiles : la perte de
l'être aimé, la dureté de la vie et la tristesse qu'on barricade parfois... Elise franco-japonaise,
orpheline de sa maman veut poser LA question à son père et elle en trouvera le courage au fil des pages,
grâce au retour de sa grand-mère du japon, de sa rencontre avec son extravagante amie Stella..
Ensemble il ne diront plus Sayonara mais Mata Ne !
Radio astronomy uses unique observational techniques and offers the only way to investigate many phenomena in the Universe. This book, by two founders...
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Livré chez vous entre le 5 octobre et le 19 octobre
En librairie
Résumé
Radio astronomy uses unique observational techniques and offers the only way to investigate many phenomena in the Universe. This book, by two founders of the field, presents both a clear introduction to radio telescopes and techniques, and a broad overview of the radio Universe. The material in this new edition has been expanded and updated, reflecting the developments in the field over the last decade. The first half of the book includes reference material on the fundamentals of astrophysics and observing techniques, describing how radio telescopes work - from basic antennas and single aperture dishes through to full aperture-synthesis arrays. New material reflects the increasing use of aperture synthesis and very-long-baseline interferometry, and the further exploitation of molecular spectral lines. A new chapter is devoted to the fundamentals of radiation and propagation theory. The second half of the book constitutes a review of radio observations of our milky Way galaxy, stars, pulsars, radio Galaxies, quasars and the cosmic microwave background. Reviews of Fourier transform theory, celestial coordinate systems and a historical outline of the subject are provided in appendices. Wide-ranging and clearly written, this book provides a thorough and up-to-date introduction to the subject for graduate students, and an invaluable overview for researchers turning to radio astronomy for the first time.
Sommaire
Radio telescopes as antennas
Signal detection and noise
Single-aperture radio telescopes
The two-element interferometer
Aperture synthesis
Radiation, propagation and absorption of radio waves
Galactic continuum radiation
The interstellar medium
Galactic dynamics
Stars
Pulsars
Radio galaxies and quasars
Cosmology and the cosmic microwave background
Cosmology: discrete radio sources and gravitational lenses