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Related papers: Higher order methods for Radiative Transfer in Ast…

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Deep-level transient spectroscopy and temperature-dependent time-resolved photoluminescence experiments are performed on identical InAs nBn photodetector structures as a function of in-situ and ex-situ 63 MeV proton irradiation to assess…

Context: Thermal conductivity provides important contributions to the energy evolution of the upper solar atmosphere, behaving as a non-linear concentration-dependent diffusion equation. Recently, different methods have been offered as…

Solar and Stellar Astrophysics · Physics 2024-12-11 George Cherry , Boris Gudiksen , Mikolaj Szydlarski

By confusing the radiance of a single mode light beam, constant in a transparent medium, with the irradiance which decreases away from the source, Menzel purports to show that coherent interactions of light with the diluted media of…

General Physics · Physics 2010-02-09 Jacques Moret-Bailly

A one-dimensional method for reconstructing the structure of prestellar and protostellar clouds is presented. The method is based on radiative transfer computations and a comparison of theoretical and observed intensity distributions at…

Instrumentation and Methods for Astrophysics · Physics 2015-05-20 Ya. N. Pavlyuchenkov , D. S. Wiebe , A. M. Fateeva , T. S. Vasyunina

The non-observation of dark matter (DM) by direct detection experiments suggests that any new interaction of DM with the Standard Model (SM) should be very weak. One of the simplest scenarios to achieve this is a dark sector that is charged…

High Energy Physics - Phenomenology · Physics 2019-07-26 Patrick Foldenauer

We present LVG and non-local radiative transfer calculations involving the rotational and hyperfine structure of the spectrum of N$_2$H$^+$ with collisional rate coefficients recently derived by us. The goal of this study is to check the…

Astrophysics · Physics 2008-11-26 F. Daniel , J. Cernicharo , M. -L. Dubernet

Modeling light-matter interaction in hybrid plasmonic materials is vital to their widening relevance from optoelectronics to photocatalysis. Here, we explore photoluminescence from ZnO nanorods (ZNR) embedded with gold nanoparticles (Au…

Materials Science · Physics 2023-07-21 Kritika Sharu , Shashwata Chattopadhyay , K. N. Prajapati , J. Mitra

Dispersion relations and amplitudes of collective pionic modes are derived in a pi + nucleon-hole + delta-hole model for use in transport descriptions by means of a local density approximation. It is discussed how pionic modes can be…

Nuclear Theory · Physics 2009-10-28 J. Helgesson , J. Randrup

The dark photon is a massive hypothetical particle that interacts with the Standard Model by kinetically mixing with the visible photon. For small values of the mixing parameter, dark photons can evade cosmological bounds to be a viable…

High Energy Physics - Phenomenology · Physics 2021-12-02 Andrea Caputo , Alexander J. Millar , Ciaran A. J. O'Hare , Edoardo Vitagliano

We present a new algorithm for radiative transfer-based on a statistical Monte Carlo approach-that does not suffer from teleportation effects, on the one hand, and yields smooth results, on the other hand. Implicit Monte Carlo (IMC)…

Instrumentation and Methods for Astrophysics · Physics 2022-01-12 Elad Steinberg , Shay I. Heizler

Radiative transfer plays a major role in the process of star formation. Many simulations of gravitational collapse of a cold gas cloud followed by the formation of a protostellar core use a grey treatment of radiative transfer coupled to…

Solar and Stellar Astrophysics · Physics 2015-06-05 Neil Vaytet , Edouard Audit , Gilles Chabrier , Benoit Commercon , Jacques Masson

We use detailed radiative transfer models to investigate the differences between the Star-Obvious Low-level-Elongated proto-planetary nebulae (SOLE PPNs) and DUst-Prominent Longitudinally-EXtended proto-planetary nebulae (DUPLEX PPNs) which…

Astrophysics · Physics 2009-11-07 M. Meixner , T. Ueta , M. Bobrowsky , A. K. Speck

This study compares different methods to predict the simultaneous effects of conductive and radiative heat transfer in a Polymethylmethacrylate (PMMA) sample. PMMA is a kind of polymer utilized in various sensors and actuator devices.…

Machine Learning · Computer Science 2022-04-20 Mahsa Dehghan Manshadi , Nima Alafchi , Alireza Taat , Milad Mousavi , Amir Mosavi

The use of silicon photomultipliers (SiPMs) alongside conventional photomultiplier tubes (PMTs) is a remarkable technological development in modern ground-based very high energy gamma-ray astronomy. SiPMs exhibit comparable or even higher…

Instrumentation and Methods for Astrophysics · Physics 2026-02-24 Razmik Mirzoyan , Alexander Hahn , David Fink , Antonios Dettlaff , Daniel Mazin , David Paneque , Olaf Reimann , Thomas Schweizer , Derek Strom , Masahiro Teshima , Yazhou Zhao

A new means of incorporating radiative transfer into smoothed particle hydrodynamics (SPH) is introduced, which builds on the success of two previous methods - the polytropic cooling approximation as devised by Stamatellos et al (2007), and…

Astrophysics · Physics 2009-11-13 Duncan Forgan , Ken Rice , Dimitris Stamatellos , Anthony Whitworth

We present a detailed study of the dust energy balance in the Sombrero galaxy M104. From a full radiative transfer analysis, including scattering, absorption and thermal re-emission, we construct models that can reproduce images at…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-30 Ilse De Looze , Maarten Baes , Jacopo Fritz , Joris Verstappen

Unification Models of Active Galactic Nuclei postulate that all the observed differences between Type 1 and Type 2 objects are due to orientation effects with respect to the line-of-sight to the observer. The key ingredient of these models…

Astrophysics of Galaxies · Physics 2015-06-03 Stefano Bianchi , Roberto Maiolino , Guido Risaliti

A new code for evaluation of light absorption and scattering by interstellar dust grains is presented. The radiative transfer problem is solved using ray-tracing algorithm in a self-consistent and highly efficient way. The code demonstrates…

Astrophysics · Physics 2007-05-23 D. Semionov , V. Vansevicius

Results from the photon multiplicity measurements using a fine granularity preshower photon multiplicity detector (PMD) at CERN SPS are discussed. These include study of pseudo-rapidity distributions of photons, scaling of photon…

Nuclear Experiment · Physics 2009-11-07 Bedangadas Mohanty

Remote sensing hyperspectral and more generally spectral instruments are common tools to decipher surface features in Earth and Planetary science. While linear mixture is the most common approximation for compounds detection (mineral,…

Earth and Planetary Astrophysics · Physics 2023-05-03 Frédéric Schmidt
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