Synthetic observations of turbulent flows in diffuse multiphase interstellar medium

Masako Yamada, H. Koyama, K. Omukai, S. Inutsuka

Research output: Contribution to journalArticlepeer-review


We examined observational characteristics of multi-phase turbulent flows in the diffuse interstellar medium (ISM) by calculating atomic and molecular carbon lines. Radiation field maps of C +, C 0, and CO line emissions were generated by calculating the non-local thermodynamic equilibrium (nonLTE) level populations and high resolution hydrodynamic simulations of diffuse ISM. By analyzing synthetic line emission, we found a high ratio between the lines of high- and low-excitation energies in the diffuse multi-phase interstellar medium. Our results shows that simultaneous observations of the lines of warm- and cold-gas tracers will be useful in examining the thermal structure, and hence the origin of diffuse interstellar clouds.

Original languageEnglish
Pages (from-to)499
Number of pages1
JournalProceedings of the International Astronomical Union
Issue numberS237
Publication statusPublished - 2006 Aug
Externally publishedYes


  • ISM: lines and bands
  • Instabilities
  • Line: formation
  • Radio lines: ISM
  • Turbulence

ASJC Scopus subject areas

  • Medicine (miscellaneous)
  • Astronomy and Astrophysics
  • Nutrition and Dietetics
  • Public Health, Environmental and Occupational Health
  • Space and Planetary Science


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