A mechanism for producing ground vibrational state SiO masers

Details A mechanism for producing ground vibrational state SiO masers A mechanism for producing ground vibrational state SiO masers

Oct 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981apj...249..566r&link_type=abstract

Astrophysical Journal, Part 1, vol. 249, Oct. 15, 1981, p. 566-571.

Astronomy and Astrophysics

Astrophysics

24

Interstellar Masers, Molecular Excitation, Radiative Transfer, Silicon Oxides, Stellar Envelopes, Variable Stars, Electron Transitions, Ground State, Mathematical Models, Mira Variables, Photosphere, Stellar Mass Ejection, Trapped Particles

Scientific paper

A process is proposed by which v = 0 SiO masers may be produced in slowly accelerating circumstellar envelopes associated with Mira variables. A numerical model is used to demonstrate the feasibility of this mechanism and to investigate its properties. It is concluded that ground vibrational state SiO masers will be strong only when v = 1 masers are absent or weak. The ground state J = 1-0 transition is found to be the strongest v = 0 maser transition.

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