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If a fraction $f_{\rm dcdm}$ of the Dark Matter decays into invisible and massless particles (so-called "dark radiation") with the decay rate (or inverse lifetime) $\Gamma_{\rm dcdm}$, such decay will leave distinctive imprints on…

Cosmology and Nongalactic Astrophysics · Physics 2020-02-05 Linfeng Xiao , Le Zhang , Rui An , Chang Feng , Bin Wang

Chapter 1 gives a brief history of the field of holography along with an overview of this thesis. A more detailed description of holography is provided in Chapter 2 along with a discussion of digital holography. Chapter 3 examines the…

Optics · Physics 2009-09-30 John Tapsell

Dark matter (DM) capture in stars offers a rich phenomenology that makes it possible to probe a wide variety of particle DM scenarios in diverse astrophysical environments. In spite of decades of improvements to refine predictions of…

Cosmology and Nongalactic Astrophysics · Physics 2021-02-02 José Lopes , Thomas Lacroix , Ilídio Lopes

We find that it is possible to increase sensitivity to low energy physics in a third or fourth DUNE-like module with careful controls over radiopurity and some modifications to a detector similar to the DUNE Far Detector design. In…

The advent of increasingly large and complex datasets has fundamentally altered the way that scientists conduct astronomy research. The need to work closely to the data has motivated the creation of online science platforms, which include a…

Instrumentation and Methods for Astrophysics · Physics 2021-04-15 Stéphanie Juneau , Knut A. G. Olsen , Robert Nikutta , Alice Jacques , Stephen Bailey

Micro-electro-mechanical systems (MEMS) technology can provide for deformable mirrors (DMs) with excellent performance within a favorable economy of scale. Large MEMS-based astronomical adaptive optics (AO) systems such as the Gemini Planet…

Recent high-resolution simulations that include Cold Dark Matter (CDM) and baryons have shown that baryonic physics can dramatically alter the dark matter structure of galaxies. These results modify our predictions for observed galaxy…

Cosmology and Nongalactic Astrophysics · Physics 2014-07-30 Alyson Brooks

CMOS detectors offer many advantages over CCDs for optical and UV astronomical applications, especially in space where high radiation tolerance is required. However, astronomical instruments are most often designed for low light-level…

Instrumentation and Methods for Astrophysics · Physics 2022-03-31 Timothee Greffe , Roger Smith , Myles Sherman , Fiona Harrison , Hannah Earnshaw , Brian Grefenstette , John Hennessy , Shouleh Nikzad

Optical designs for astronomy involve implementation of active optics and adaptive optics from X-ray to the infrared. Developments and results of active optics methods for telescopes, spectrographs and coronagraph planet finders are…

Instrumentation and Methods for Astrophysics · Physics 2015-06-15 Gerard R. Lemaitre

Axions are a popular dark matter candidate which are often searched for in experiments known as ``haloscopes" which exploit a putative axion-photon coupling. These experiments typically rely on Transverse Magnetic (TM) modes in resonant…

Instrumentation and Detectors · Physics 2020-11-10 Aaron P. Quiskamp , Ben T. McAllister , Gray Rybka , Michael E. Tobar

This research paper proposes a Latent Diffusion Model for 3D (LDM3D) that generates both image and depth map data from a given text prompt, allowing users to generate RGBD images from text prompts. The LDM3D model is fine-tuned on a dataset…

Computer Vision and Pattern Recognition · Computer Science 2023-05-23 Gabriela Ben Melech Stan , Diana Wofk , Scottie Fox , Alex Redden , Will Saxton , Jean Yu , Estelle Aflalo , Shao-Yen Tseng , Fabio Nonato , Matthias Muller , Vasudev Lal

We study the imprint of dark matter (DM) annihilation on the global 21 cm signal from the Dark Ages to Cosmic Reionization. Motivated by recent observations, we focus on three DM candidates: (i) a 10 GeV Bino-like neutralino (ii) a 200 GeV…

Cosmology and Nongalactic Astrophysics · Physics 2013-04-16 Marcos Valdés , Carmelo Evoli , Andrei Mesinger , Andrea Ferrara , Naoki Yoshida

There are many extensions of the Standard Model with a dark matter (DM) candidate obtained via the freeze-out mechanism. It can happen that after all experimental and theoretical constraints are taken into account, all parameter points have…

High Energy Physics - Phenomenology · Physics 2024-07-09 Rodrigo Capucha , Karim Elyaouti , Margarete Mühlleitner , Johann Plotnikov , Rui Santos

The ADAMOS (Axion Daily Modulation Searches) project aims to explore the nature of dark matter (DM) through a novel axion haloscope experiment. We propose to construct a fixed-frequency cavity resonator operating at 20 GHz at the University…

High Energy Physics - Experiment · Physics 2026-03-20 Marios Maroudas , Toma-Stefan Cezar , Antonios Gardikiotis , Dieter Horns

The suppression of cosmological structure at small scales is a key signature of dark matter (DM) produced via freeze-in in the low-mass regime. We present a comprehensive analysis of its impact, incorporating recent constraints from Milky…

High Energy Physics - Phenomenology · Physics 2025-12-12 Francesco D'Eramo , Alessandro Lenoci , Ariane Dekker

Shadows in scanned documents pose significant challenges for document analysis and recognition tasks due to their negative impact on visual quality and readability. Current shadow removal techniques, including traditional methods and deep…

Computer Vision and Pattern Recognition · Computer Science 2024-07-31 Ziyang Zhou , Yingtie Lei , Xuhang Chen , Shenghong Luo , Wenjun Zhang , Chi-Man Pun , Zhen Wang

This study extended research on the development of explanatory labels for astronomical images for the non-expert lay public. The research questions addressed how labels with leading questions/metaphors and relevance to everyday life affect…

Instrumentation and Methods for Astrophysics · Physics 2017-03-09 Lisa F. Smith , Kimberly Kowal Arcand , Benjamin K. Smith , Randall K. Smith , Jay Bookbinder , Jeffrey K. Smith

Recently, the distribution of velocity dispersion as far as 400kpc around red isolated galaxies was derived from statistical studies of satellites in the SDSS (Klypin & Prada 2009). This could help to constrain dark matter models at…

Cosmology and Nongalactic Astrophysics · Physics 2014-11-20 F. Combes , O. Tiret

A huge amount of good quality astrophysical data converges towards the picture of a spatially flat universe undergoing the today observed phase of accelerated expansion. This new observational trend is commonly addressed as Precision…

Astrophysics · Physics 2009-06-23 S. Capozziello

Collider signals of dark photons are an exciting probe for new gauge forces and are characterized by events with boosted lepton jets. Existing techniques are efficient in searching for muonic lepton jets but due to substantial backgrounds…

High Energy Physics - Phenomenology · Physics 2017-03-15 G. Barello , Spencer Chang , Christopher A. Newby , Bryan Ostdiek