Comoving-frame radiative transfer in arbitrary velocity fields

نویسندگان
چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Comoving - frame radiative transfer in arbitrary velocity fields – II . Large scale applications

Aims. A solution of the radiative-transfer problem in arbitrary velocity fields introduced in a previous paper, has limitations in its applicability. For large-scale applications, the methods described also require large memory sets that are commonly not available to state-of-the-art computing hardware. In this work, we modify the algorithm to allow the computation of large-scale problems. Meth...

متن کامل

Co-moving frame radiative transfer in spherical media with arbitrary velocity fields

Recently, with the advances in computational speed and availability there has been a growth in the number and resolution of fully 3-D hydrodynamical simulations. However, all of these simulations are purely hydrodynamical and there has been little attempt to include the effects of radiative transfer except in a purely phenomenological manner because the computational cost is too large even for ...

متن کامل

A new formal solution of the radiative transfer in arbitrary velocity fields . ( Research Note )

Aims. We present a new formal solution of the Lagrangian equation of radiative transfer that is useful in solving the equation of radiative transfer in the presence of arbitrary velocity fields. Methods. Normally a term due to the inclusion of the wavelength derivative in the Lagrangian equation of radiative transfer is associated with a generalised opacity. In non-monotonic velocity fields, th...

متن کامل

Gamma-ray bursts in the comoving frame

We estimate the bulk Lorentz factor 0 of 31 gamma-ray bursts (GRBs) using the measured peak time of their afterglow light curves. We consider two possible scenarios for the estimate of 0: the case of a homogeneous circumburst medium or a wind density profile. The values of 0 are broadly distributed between few tens and several hundreds with average values ∼138 and ∼66 for the homogeneous and wi...

متن کامل

Sunrise: Polychromatic Dust Radiative Transfer in Arbitrary Geometries

This paper describes sunrise, a parallel, free Monte-Carlo code for the calculation of radiation transfer through astronomical dust. sunrise uses an adaptivemesh refinement grid to describe arbitrary geometries of emitting and absorbing/scattering media, with spatial dynamical range exceeding 10, and it can efficiently generate images of the emerging radiation at arbitrary points in space. In a...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Astronomy & Astrophysics

سال: 2009

ISSN: 0004-6361,1432-0746

DOI: 10.1051/0004-6361/200911793