Aperture Synthesis of Interstellar Neutral Hydrogen in Absorption. I. The Perseus Arm Feature of Cassiopeia A,

Abstract

The Owens Valley Radio Observatory interferometer was used to carry out a program of aperture synthesis in the interstellar neutral hydrogen absorption line. Maps having resolutions of 0.2 km/s and about 1.3 arc minutes were produced using a novel Fourier inversion method. This paper is devoted to discussions of the observing and analyzing procedures and of the results for the Perseus arm feature in the spectrum of Cassiopeia A. (Author Modified Abstract)

Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1973
Accession Number
AD0757687

Entities

People

  • Eric W. Greisen

Organizations

  • Owens Valley Radio Observatory

Tags

DTIC Thesaurus Topics

  • Absorption
  • Abstracts
  • Hydrogen
  • Interferometers
  • Inversion
  • Observatories
  • Spectra

Fields of Study

  • Physics

Readers

  • Astronomy/Astrophysics
  • Spectroscopy.

Technology Areas

  • Space
  • Space - Hall-Effect Thruster