Radio Recombination Lines [E-Book] : Their Physics and Astronomical Applications /

Radio Recombination Lines [E-Book] : Their Physics and Astronomical Applications / by M. A. Gordon, R. L. Sorochenko.

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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Gordon, M. A., author
Sorochenko, R. L., author
Dordrecht : Springer, 2002
XVII, 358 p. online resource.
englisch
9789401002615
10.1007/978-94-010-0261-5
Astrophysics and Space Science Library ; 282
Astronomy
Atomic structure.
Molecular structure.
Observations, Astronomical.
Physics.
Spectra.
Observations.



  • 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.