Analysis of interplanetary Lyman-alpha line profile with a hydrogen absorption cell - Theory of the Doppler angular spectral scanning method - Service d'aéronomie Accéder directement au contenu
Article Dans Une Revue Astronomy and Astrophysics - A&A Année : 1984

Analysis of interplanetary Lyman-alpha line profile with a hydrogen absorption cell - Theory of the Doppler angular spectral scanning method

Jean-Loup Bertaux
  • Fonction : Auteur
  • PersonId : 914210
Rosine Lallement
  • Fonction : Auteur
  • PersonId : 915617

Résumé

The use of a hydrogen absorption cell as a means of diagnostic for interstellar hydrogen is described. Through resonance scattering of solar Lyα photons, the interstellar atoms penetrating into the solar system present a Lyα emission the profile of which is an image of their velocity distribution. From the study of hydrogen Lyα profiles the temperature T of the interstellar hydrogen and the three components of the relative velocity vector Vw can be determined. The case in which the velocity distribution of H atoms in the interplanetary medium is the same Maxwell-Boltzmann distribution as at infinity (the uniform gaussian case) is completely described.
Fichier principal
Vignette du fichier
1984A+A___140__230B.pdf (316.37 Ko) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte

Dates et versions

insu-03168754 , version 1 (14-03-2021)

Identifiants

  • HAL Id : insu-03168754 , version 1

Citer

Jean-Loup Bertaux, Rosine Lallement. Analysis of interplanetary Lyman-alpha line profile with a hydrogen absorption cell - Theory of the Doppler angular spectral scanning method. Astronomy and Astrophysics - A&A, 1984, 140 (2), pp.230-242. ⟨insu-03168754⟩
109 Consultations
16 Téléchargements

Partager

Gmail Facebook X LinkedIn More