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Following extensive tests on analytical toy-catalogues (paper III), we present the results of a more realistic study over a 711 deg2 template-based cosmological simulation. Dark matter halos from the Aardvark simulation have been ascribed…

Cosmology and Nongalactic Astrophysics · Physics 2018-06-20 A. Valotti , M. Pierre , A. Farahi , A. Evrard , L. Faccioli , J. -L. Sauvageot , N. Clerc , F. Pacaud

Accurate 3D perception is essential for understanding the environment in autonomous driving. Recent advancements in 3D semantic occupancy prediction have leveraged camera-LiDAR fusion to improve robustness and accuracy. However, current…

Computer Vision and Pattern Recognition · Computer Science 2024-12-31 Minjae Seong , Jisong Kim , Geonho Bang , Hawook Jeong , Jun Won Choi

Diffraction-before-destruction imaging with single ultrashort X-ray pulses has the potential to visualise non-equilibrium processes, such as chemical reactions, at the nanoscale with sub-femtosecond resolution in the native environment…

As the spatial features of multivariate data are increasingly central in researchers' applied problems, there is a growing demand for novel spatially-aware methods that are flexible, easily interpretable, and scalable to large data. We…

Methodology · Statistics 2026-03-17 Michele Peruzzi

Extremely large-scale multiple-input-multiple-output (XL-MIMO) is a promising technology to empower the next-generation communications. However, XL-MIMO, which is still in its early stage of research, has been designed with a variety of…

Information Theory · Computer Science 2023-04-07 Zhe Wang , Jiayi Zhang , Hongyang Du , Wei E. I. Sha , Bo Ai , Dusit Niyato , Mérouane Debbah

X-ray imaging is a ubiquitous in radiology, yet most existing AI foundation models are limited to chest anatomy and fail to generalize across broader clinical tasks. In this work, we introduce XR-0, the multi-anatomy X-ray foundation model…

Computer Vision and Pattern Recognition · Computer Science 2025-12-22 Nishank Singla , Krisztian Koos , Farzin Haddadpour , Amin Honarmandi Shandiz , Lovish Chum , Xiaojian Xu , Qing Jin , Erhan Bas

This paper introduces a comprehensive approach for segmenting regions of interest (ROI) in diverse medical imaging datasets, encompassing ultrasound, CT scans, and X-ray images. The proposed method harnesses the capabilities of the YOLOv8…

Computer Vision and Pattern Recognition · Computer Science 2023-10-23 Sumit Pandey , Kuan-Fu Chen , Erik B. Dam

Unlike conventional imaging modalities, such as magnetic resonance imaging, which are often well described by a linear regression framework, coherent imaging systems follow a significantly more complex model. In these systems, the task is…

Statistics Theory · Mathematics 2025-11-19 Hao Xing , Soham Jana , Arian Maleki

X-ray free-electron lasers (FELs) are promising tools for structural determination of macromolecules via coherent x-ray scattering. During ultrashort and ultraintense x-ray pulses with an atomic scale wavelength, samples are subject to…

Atomic Physics · Physics 2011-10-18 Sang-Kil Son , Linda Young , Robin Santra

The magnetorotational instability (MRI) plays a crucial role in the evolution of many types of accretion disks. It is often studied using ideal-MHD numerical simulations. In principle, such simulations should be numerically converged, i.e.…

High Energy Astrophysical Phenomena · Physics 2025-11-11 Thomas Jannaud , Henrik N. Latter

A parametric simulation tool for pixel sensors is presented. A realistic pixel response is simulated purely based on measurement input, without requiring detailed knowledge of the underlying manufacturing process. As such, it provides an…

X-ray diffraction with high spatial resolution is commonly used to characterize (poly-)crystalline samples with, for example, respect to local strain, residual stress, grain boundaries and texture. However, the investigation of highly…

Resonant inelastic x-ray scattering (RIXS) is a widely used spectroscopic technique, providing access to the electronic structure and dynamics of atoms, molecules, and solids. However, RIXS requires a narrow bandwidth x-ray probe to achieve…

Silicon-oxygen compounds are among the most important ones in the natural sciences, occurring as building blocks in minerals and being used in semiconductors and catalysis. Beyond the well known silicon dioxide, there are phases with…

Materials Science · Physics 2025-04-16 Linus C. Erhard , Jochen Rohrer , Karsten Albe , Volker L. Deringer

We present a series of numerical models suitable for X-ray polarimetry of accreting systems. Firstly, we provide a spectropolarimetric routine that integrates reflection from inner optically thick walls of a geometrical torus of arbitrary…

High Energy Astrophysical Phenomena · Physics 2024-04-09 J. Podgorný , M. Dovčiak , F. Marin

The imaging performance and sensitivity of an X-ray telescope when observing astrophysical sources are primarily governed by the optical design, geometrical uncertainties (figure errors, surface roughness, and mirror alignment…

Instrumentation and Methods for Astrophysics · Physics 2024-05-13 Neeraj K. Tiwari , Santosh V. Vadawale , N. P. S. Mithun , C. S. Vaishnava , Bharath Saiguhan

X-ray Compton spectroscopy is one of the few direct probes of the electron momentum distribution of bulk materials in ambient and operando environments. We report high-resolution inelastic X-ray scattering experiments with high momentum and…

Instrumentation and Detectors · Physics 2022-11-30 U. Patel , T. Guruswamy , A. J. Krzysko , H. Charalambous , L. Gades , K. Wiaderek , O. Quaranta , Y. Ren , A. Yakovenko , A. Miceli

Resonant Inelastic X-ray Scattering (RIXS), which probes the occupied and unoccupied electronic subspaces in an interrelated fashion, is one of the most detailed, complex and information-rich experimental techniques employed in the…

Materials Science · Physics 2022-09-16 Subhayan Roychoudhury , David Prendergast

Laser wakefield acceleration of electrons represents a basis for several types of novel X-ray sources based on Thomson scattering or betatron radiation. The latter provides a high photon flux and a small source size, both being…

Medical Physics · Physics 2018-12-26 J. Götzfried , A. Döpp , M. Gilljohann , H. Ding , S. Schindler , J. Wenz , L. Hehn , F. Pfeiffer , S. Karsch