TY - JOUR
T1 - A method for reconstructing the PDF of a 3D turbulent density field from 2D observations
AU - Brunt, Chris M
AU - Federrath, Christoph
AU - Price, Daniel James
PY - 2010
Y1 - 2010
N2 - We introduce a method for calculating the probability density function (PDF) of a turbulent density field in three dimensions using only information contained in the projected two-dimensional column density field. We test the method by applying it to numerical simulations of hydrodynamic and magnetohydrodynamic turbulence in molecular clouds. To a good approximation, the PDF of log(normalized column density) is a compressed, shifted version of the PDF of log(normalized density). The degree of compression can be determined observationally from the column density power spectrum, under the assumption of statistical isotropy of the turbulence.
AB - We introduce a method for calculating the probability density function (PDF) of a turbulent density field in three dimensions using only information contained in the projected two-dimensional column density field. We test the method by applying it to numerical simulations of hydrodynamic and magnetohydrodynamic turbulence in molecular clouds. To a good approximation, the PDF of log(normalized column density) is a compressed, shifted version of the PDF of log(normalized density). The degree of compression can be determined observationally from the column density power spectrum, under the assumption of statistical isotropy of the turbulence.
UR - http://adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010MNRAS.405L..56B&link_type=ARTICLE&db_key=AST&high=
U2 - 10.1111/j.1745-3933.2010.00858.x
DO - 10.1111/j.1745-3933.2010.00858.x
M3 - Article
SN - 0035-8711
VL - 405
SP - L56 - L60
JO - Monthly Notices of the Royal Astronomical Society
JF - Monthly Notices of the Royal Astronomical Society
IS - 1
ER -