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Light scattering by dust particles is often modeled assuming the dust is spherical for numerical simplicity and speed. However, real dust particles have highly irregular morphologies that significantly affect their scattering properties. We…

Earth and Planetary Astrophysics · Physics 2025-11-14 Zhe-Yu Daniel Lin , Alycia J. Weinberger , Evgenij Zubko , Jessica A. Arnold , Gorden Videen

We present new calculations of the attenuation of stellar light from spiral galaxies using geometries for stars and dust which can reproduce the entire spectral energy distribution from the UV to the FIR/submm and can also account for the…

While galaxy rotation curves provide one of the most powerful methods for measuring dark matter profiles in the inner regions of rotation-supported galaxies, at the dwarf scale there are factors that can complicate this analysis. Given the…

Exploring motion information is important for the motion deblurring task. Recent the window-based transformer approaches have achieved decent performance in image deblurring. Note that the motion causing blurry results is usually composed…

Computer Vision and Pattern Recognition · Computer Science 2024-05-24 Duosheng Chen , Shihao Zhou , Jinshan Pan , Jinglei Shi , Lishen Qu , Jufeng Yang

Understanding the co-evolution of galaxies and active galactic nuclei (AGN) requires accurate modeling of dust-obscured systems. Recent surveys using the Mid Infrared Instrument (MIRI) onboard the James Webb Space Telescope (JWST) have…

We derive the spectral energy distribution (SED) of dusty, isothermal, self gravitating, stable and spherical clouds externally heated by the ambient interstellar radiation field. For a given radiation field and dust properties, the…

Astrophysics · Physics 2009-11-13 Joerg Fischera , Michael A. Dopita

We develop a Ly-alpha radiative transfer (RT) Monte Carlo code for cosmological simulations.High resolution,along with appropriately treated cooling can result in simulated environments with very high optical depths.Thus,solving the…

Astrophysics · Physics 2009-11-13 Argyro Tasitsiomi

We address in detail the radiation forces on spherical dust envelopes around luminous stars, and numerical solutions for these forces, as a first step toward more general dust geometries. Two physical quantities, a normalized force and a…

Astrophysics of Galaxies · Physics 2018-07-25 Peter H. Jumper , Christopher D. Matzner

A WWW interface for the simulation of spectral energy distributions of optically thin dust configurations with an embedded radiative source is presented. The density distribution, radiative source, and dust parameters can be selected either…

Astrophysics · Physics 2009-11-11 S. Wolf , L. A. Hillenbrand

I outline methods for calculating the solution of Monte Carlo Radiative Transfer (MCRT) in scattering, absorption and emission processes of dust and gas, including polarization. I provide a bibliography of relevant papers on methods with…

Solar and Stellar Astrophysics · Physics 2013-01-09 Barbara A. Whitney

We develop a new three-dimensional time-dependent radiative transfer code, TRINITY (Time-dependent Radiative transfer In Near-Infrared TomographY), for in-vivo diffuse optical tomography (DOT). The simulation code is based on the design of…

Medical Physics · Physics 2022-01-10 Hidenobu Yajima , Makito Abe , Masayuki Umemura , Yuichi Takamizu , Yoko Hoshi

Dust grains play a fundamental role in galaxies, influencing both their evolution and observability. As a result, incorporating dust physics into galaxy evolution simulations is essential. This is a challenging task due to the finite…

Astrophysics of Galaxies · Physics 2025-04-16 Massimiliano Parente

Solving the inverse problem in spiral galaxies, that allows the derivation of the spatial distribution of dust, gas and stars, together with their associated physical properties, directly from panchromatic imaging observations, is one of…

Astrophysics of Galaxies · Physics 2024-12-30 D. Pricopi , C. C. Popescu , M. T. Rushton , D. Murphy , C. J. Inman , R. Toma

We compare the properties of stellar populations of model galaxies from the Cosmic Reionization On Computers (CROC) project with the exiting UV and IR data. Since CROC simulations do not follow cosmic dust directly, we adopt two variants of…

Cosmology and Nongalactic Astrophysics · Physics 2016-04-01 Zimu Khakhaleva-Li , Nickolay Y. Gnedin

A code computing consistently the evolution of stars, gas and dust, as well as the energy they radiate, is required to derive reliably the history of galaxies by fitting synthetic SEDs to multiwavelength observations. The new code…

Astrophysics of Galaxies · Physics 2019-03-27 Michel Fioc , Brigitte Rocca-Volmerange

A variety of dust attenuation/extinction curves have been observed in high-redshift galaxies, with mixed results regarding their correlations with global galaxy properties. These variations are likely driven by factors such as intrinsic…

Astrophysics of Galaxies · Physics 2025-10-15 V. Markov , S. Gallerani , A. Pallottini , M. Bradac , S. Carniani , R. Tripodi , G. Noirot , F. Di Mascia , E. Parlanti , N. Martis

Program SHELLSPEC is designed to calculate light-curves, spectra and images of interacting binaries and extrasolar planets immersed in a moving circumstellar environment which is optically thin. It solves simple radiative transfer along the…

Solar and Stellar Astrophysics · Physics 2015-05-30 Jan Budaj

Dust emission is an important tool in studies of star-forming clouds, as a tracer of column density and indirectly via the dust evolution that is connected to the history and physical conditions of the clouds. We examine radiative transfer…

Astrophysics of Galaxies · Physics 2024-01-24 M. Juvela

Context. We present the COMetary dust TAIL Simulator (COMTAILS), a numerical Monte Carlo code to generate images of dust tail brightness from comets and active asteroids in the Solar System. Aims. We describe a numerical code, available to…

Earth and Planetary Astrophysics · Physics 2025-03-10 Fernando Moreno

The assumption of spherical symmetry is not justified for the vast majority of PNe. The interpretation of spatially-resolved observations cannot rely solely on the application of 1D codes, which may yield incorrect abundances determinations…

Astrophysics · Physics 2009-11-11 B. Ercolano , M. J. Barlow , P. J. Storey
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