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We introduce a new, publicly available Monte Carlo radiative transfer code, STOKES, which has been developed to model polarization induced by scattering off free electrons and dust grains. It can be used in a wide range of astrophysical…

Astrophysics · Physics 2009-11-13 Rene W. Goosmann , C. Martin Gaskell , M. Shoji

A thermal active galactic nucleus (AGN) consist of a powerful, broad-band continuum source that is surrounded by several reprocessing media with different geometries and compositions. Here we investigate the expected spectropolarimetric…

High Energy Astrophysical Phenomena · Physics 2012-04-05 Frederic Marin , Rene W. Goosmann

The Virtual Observatory (VO) simulation standards, Simulation Data Model (SimDM) and Simulation Data Access Layer (SimDAL), establish a framework for the discoverability and dissemination of data created in simulation projects. These…

Digital Libraries · Computer Science 2019-11-26 Chaitra , Sara Bertocco , Marco Molinaro , Sergio Molinari , Antonio Ragagnin , Giuliano Taffoni

The deeply virtual Compton scattering reaction has been investigated in the Hall A of the Jefferson Laboratory by measuring longitudinally polarized (e,e'gamma) cross sections, in the valence quark region, for protons and neutrons. In the…

Nuclear Experiment · Physics 2007-09-28 Eric Voutier

The World Space Observatory - Ultraviolet (WSO-UV) space telescope is equipped with high dispersion (55,000) spectrographs working in the 1150-3100 {\AA} spectral range. To evaluate the impact of the design on the scientific objectives of…

Instrumentation and Methods for Astrophysics · Physics 2017-06-13 Pablo Marcos-Arenal , Ana I. Gómez de Castro , Belén Perea Abarca , Mikhail Sachkov

Stereo-LiDAR fusion is a promising task in that we can utilize two different types of 3D perceptions for practical usage -- dense 3D information (stereo cameras) and highly-accurate sparse point clouds (LiDAR). However, due to their…

Computer Vision and Pattern Recognition · Computer Science 2021-03-25 Jaesung Choe , Kyungdon Joo , Tooba Imtiaz , In So Kweon

The Virtual Compton scattering (VCS) process at low energies explores the electromagnetic structure of the proton in terms of generalized polarizabilities (GPs). In the one-photon exchange approximation, VCS can be accessed with exclusive…

High Energy Physics - Phenomenology · Physics 2021-12-08 B. Pasquini , M. Vanderhaeghen

Generative Artificial Intelligence (AI) models can propose solutions to scientific problems beyond human capability. To truly make conceptual contributions, researchers need to be capable of understanding the AI-generated structures and…

Human-Computer Interaction · Computer Science 2024-10-21 Philipp Schmidt , Sören Arlt , Carlos Ruiz-Gonzalez , Xuemei Gu , Carla Rodríguez , Mario Krenn

The abundance of active galactic nuclei (AGN) in cosmic voids is relatively unexplored in the literature, but can potentially provide new constraints on the environmental dependence of AGN activity and the AGN-host co-evolution. We…

Astrophysics of Galaxies · Physics 2021-12-01 H. D. Mishra , X. Dai , E. Guerras

The spectra of Active Galactic Nuclei (AGNs) are often characterized by a wealth of emission lines with different profiles and intensity ratios that led to a complicated classification. Their electro-magnetic radiation spans more than 10…

In the coming era of data-intensive science, it will be increasingly important to be able to seamlessly move between scientific results, the data analyzed in them, and the processes used to produce them. As observations, derived data…

Instrumentation and Methods for Astrophysics · Physics 2011-03-31 Alberto Accomazzi , Rahul Dave

Very Small Angle Neutron Scattering (VSANS) is an upgrade of the traditional Small Angle Neutron Scattering (SANS) technique which can cover three orders of magnitude of length scale from one nanometer to one micrometer. It is a powerful…

Instrumentation and Detectors · Physics 2016-03-22 Taisen Zuo , He Cheng , Yuan-Bo Chen , Fang-Wei Wang

In the framework of the European VO-Tech project, we are implementing new machine learning methods specifically tailored to match the needs of astronomical data mining. In this paper, we shortly present the methods and discuss an…

Astrophysics · Physics 2007-05-23 R. d'Abrusco , G. Longo , M. Paolillo , E. de Filippis , M. Brescia , A. Staiano , R. Tagliaferri

In this Thesis, we describe the development of a three-dimensional radiative transfer code using Monte Carlo technique and its application to various astrophysical problems. This code is capable of simulating the radiation spectra coming…

High Energy Astrophysical Phenomena · Physics 2013-07-16 Himadri Ghosh

We collect data at all frequencies for the new sources classified as unknown active galactic nuclei (AGNs) in the latest Burst Alert Telescope (BAT) all-sky hard X-ray catalog. Focusing on the 36 sources with measured redshift, we compute…

High Energy Astrophysical Phenomena · Physics 2021-04-07 Luca Giuliani , Gabriele Ghisellini , Tullia Sbarrato

The methods by which one characterizes the distribution of matter in cosmological simulations is intrinsically different from how one performs the same task observationally. In this paper, we make substantial steps towards comparing…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-16 Hilary Egan , Britton D. Smith , Brian W. O'Shea , J. Michael Shull

Active Galactic Nuclei (AGN) are objects located in the heart of galaxies which emit powerful and complex radiation across the electromagnetic spectrum. Understanding AGN has become a topic of interest due to their importance in galactic…

Astrophysics of Galaxies · Physics 2025-04-01 Henry Best , Matthew O'Dowd , Joshua Fagin , James H. H. Chan , Bridget Ierace

Raman scattering by atomic hydrogen converts the UV continuum around Ly$\beta$ into optical continuum around H$\alpha$, and the basic atomic physics has been discussed in several works on symbiotic stars. We propose that the same process…

Astrophysics · Physics 2016-08-30 Hee-Won Lee , Jong-Hyeun Yun

Three-dimensional (3D) high-resolution imaging is essential in microscopy, yet light scattering poses significant challenges in achieving it. Here, we present an approach to holographic imaging of spatially incoherent objects through…

Optics · Physics 2025-02-04 YoonSeok Baek , Hilton B. de Aguiar , Sylvain Gigan

ASCRIBE-XR, a novel computational platform designed to facilitate the visualization and exploration of 3D volumetric data and mesh data in the context of synchrotron experiments, is described. Using Godot and PC-VR technologies, the…

Human-Computer Interaction · Computer Science 2025-07-08 Ronald J. Pandolfi , Jeffrey J. Donatelli , Julian Todd , Daniela Ushizima