XIIIème Ecole de Cosmologie
12 - 17 novembre 2017 IESC, Cargèse
Le CMB de A à Z
Enjeux et défis du CMB comme sonde cosmologique

The magnetized Galactic interstellar medium (ISM)

François Boulanger
Ecole Normale Supérieure, Paris

Chapters

  1. Broad context: cosmic magnetism
  2. Observations of interstellar magnetic fields
  3. The interplay between interstellar matter and magnetic fields as seen by Planck

Abstract

Turbulence, magnetic fields, thermal instability and gravity all play a role in the formation of stars through processes that we are far from understanding. The full understanding of this complex interplay of non-linear physics is beyond theoretical grasp, and we have to turn to observations and numerical simulations  for guidance. I will introduce this research field within the broader context of cosmic magnetism.  Next, I will focus presenting observations that characterize the structure of the magnetized ISM.  Last, I will show how the statistical properties of the Planck dust polarization maps relate and contribute to our understanding.

Bibliography

  • Articles
    • Planck intermediate results. XIX. An overview of the polarized thermal emission from Galactic dust
      Planck Collaboration, et al.
      2015, A&A, 576, A104
    • Planck intermediate results. XX. Comparison of polarized thermal emission from Galactic dust with simulations of MHD turbulence
      Planck Collaboration, et al.
      2015, A&A, 576, A105
    • The structure of the thermally bistable and turbulent atomic gas in the local interstellar medium
      Saury, E.; Miville-Deschênes, M.-A.; Hennebelle, P.; Audit, E.; Schmidt, W.
      2014, A&A, 567, A16
    • Planck intermediate results. XXXII. The relative orientation between the magnetic field and structures traced by interstellar dust
      Planck Collaboration, et al.
      2016, A&A, 586, A135
    • Planck intermediate results. XXXV. Probing the role of the magnetic field in the formation of structure in molecular clouds
      Planck Collaboration, et al.
      2016, A&A, 586, A138

Programme