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Article Dans Une Revue Advances in Space Research Année : 2019

Masers: Precision probes of molecular gas

A.M.S. Richards
  • Fonction : Auteur
A. Sobolev
  • Fonction : Auteur
Fabrice Herpin
M.D. Gray
  • Fonction : Auteur
S. Etoka
  • Fonction : Auteur
L. Humphreys
  • Fonction : Auteur
W. Vlemmings
  • Fonction : Auteur

Résumé

Maser emission from water, methanol, silicon monoxide and other molecules can reach brightness temperatures K. Such observations can achieve sub-pc precision for discs around black holes or sub-au scale interactions in protostellar discs and the regions where evolved star winds reach escape velocity. Ultra-high resolution maser observations also provide photon statistics, for fundamental physics experiments. RadioAstron has shown the success – and limitations – of cm-wave maser observations on scales mas with sparse baseline coverage. ALMA, APEX and earlier single dish searches have found a wealth of mm and sub-mm masers, some of which probably also attain high brightness temperatures. Masers are ideal for high-resolution observations throughout the radio regime and we need to consider the current lessons for the best observational strategies to meet specific science cases.

Dates et versions

hal-02164347 , version 1 (25-06-2019)

Identifiants

Citer

A.M.S. Richards, A. Sobolev, Alain Baudry, Fabrice Herpin, L. Decin, et al.. Masers: Precision probes of molecular gas. Advances in Space Research, 2019, Advances in Space Research, Available online 11 June 2019. ⟨10.1016/j.asr.2019.05.052⟩. ⟨hal-02164347⟩

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