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Radio Recombination Lines Their Physics and Astronomical Applications

Recombination lines at radio wavelengths have been - and still are - a pow­ erful tool for modern astronomy. For more than thirty years they have allowed astronomers to probe the gases from which stars form. They have even been detected in the Sun. In addition, observations of these spectral lines f...

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Bibliographic Details
Main Authors: Gordon, M.A., Sorochenko, Roman L. (Author)
Format: eBook
Language:English
Published: Dordrecht Springer Netherlands 2002, 2002
Edition:1st ed. 2002
Series:Astrophysics and Space Science Library
Subjects:
Atomic Structure  
Astronomy / Observations
Molecular Structure 
Astronomy, Observations And Techniques
Atomic And Molecular Structure And Properties
Online Access:
Collection: Springer Book Archives -2004 - Collection details see MPG.ReNa
Table of Contents:
  • 1 Introduction
  • 1.1 The Cosmos as a Laboratory
  • 1.2 Spectral Lines in Astronomy
  • 1.3 The Bohr Atom
  • 1.4 Spectral Lines in Radio Astronomy
  • 2 RRLs and Atomic Physics
  • 2.1 The First Surprising Results: The Absence of Stark Broadening
  • 2.2 The Broadening of Radio Recombination Lines
  • 2.3 Intensity of Radio Recombination Lines
  • 2.4 The Range of RRL Studies
  • 2.5 How Many Atomic Levels Can Exist?
  • 2.6 Summary
  • 3 RRLs — Tools for Astronomers
  • 3.1 Physical Conditions in H II Regions
  • 3.2 Ionized Hydrogen and Helium in the Galaxy
  • 3.3 Exploration of the Cold ISM by RRLs
  • 3.4 RRLs from Stars and Stellar Envelopes
  • 3.5 RRLs from Extragalactic Objects
  • A Constants
  • A.1 Miscellaneous Constants
  • A.2 Rydberg Constants
  • A.2.1 Reduced Mass
  • A.2.2 Table of Rydberg Constants
  • B Tables of Line Frequencies
  • B.1 Frequencies Below 100 GHz
  • B.2 Frequencies Above 100 GHz
  • B.3 FORTRAN Code for Fine-Structure Frequencies
  • C Supplemental Calculations
  • C.1 Early Estimates of Stark Broadening
  • C.2 Refinements to the Bohr Model
  • D Hydrogen Oscillator Strengths
  • D.1 Population of Atomic Sublevels
  • D.2 Calculation of Oscillator Strengths
  • D.3 Radial Matrix Integrals Code
  • E Departure Coefficients
  • E.1 FORTRAN Code for Calculating bn Values
  • F Observational Units
  • F.1 What Radio Telescopes Measure
  • F.2 How Radio Telescopes Measure
  • F.2.1 Sources smaller than the beam size
  • F.2.2 Sources larger than the beam size
  • F.2.3 Antenna temperature scale
  • Author Index
  • References

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