Probing the Magnetic Field with Molecular Ion Spectra | Zendy

Martin Houde | Zendy; Pierre Bastien | Zendy; R. Peng | Zendy; T. G. Phillips | Zendy; Hiroshige Yoshida | Zendy

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Probing the Magnetic Field with Molecular Ion Spectra

Author(s) -

Martin Houde,

Pierre Bastien,

R. Peng,

T. G. Phillips,

Hiroshige Yoshida

Publication year - 2000

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/308980

Subject(s) - magnetic field , ion , spectral line , field (mathematics) , physics , polyatomic ion , molecule , turbulence , atomic physics , quantum mechanics , mathematics , pure mathematics , thermodynamics

Observations of the effect of the magnetic field on its environment areusually achieved with techniques which rely on the interaction with the spin ofthe particles under study. Because of the relative weakness of this effect,extraction of the field characteristics proves to be a most challenging task.We take a totally different approach to the problem and show that themanifestation of the magnetic field can be directly observed by means of acomparison of the spectra of molecular ions with those of neutral molecules.This takes advantage of the strong cyclotron interaction between the ions andthe field, but requires the presence of flows or turbulent motion in the gas.We compare our theory to data obtained on the OMC-1, OMC-2, OMC-3 and DR21(OH)molecular clouds.Comment: 16 pages, 3 figures, 2 table

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