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The development of parallel-processing image-analysis codes is generally a challenging task that requires complicated choreography of interprocessor communications. If, however, the image-analysis algorithm is embarrassingly parallel, then…

Instrumentation and Methods for Astrophysics · Physics 2015-05-19 Kenneth John Mighell

Millimetre-wave observations represent an important tool for Cosmology studies. The Line Intensity Mapping (LIM) technique has been proposed to map in three dimensions the specific intensity due to line (e.g. [CII], CO) emission, for…

Instrumentation and Methods for Astrophysics · Physics 2023-08-29 Usasi Chowdhury , Florence Levy-Bertrand , Martino Calvo , Johannes Goupy , Alessandro Monfardini

In dense and cold regions of the interstellar medium (ISM), molecules may be adsorbed onto dust grains to form the ice mantles. Once formed, they can be processed by ionizing radiation coming from stellar or interstellar medium leading to…

Instrumentation and Methods for Astrophysics · Physics 2016-09-16 W. R. M. Rocha , S. Pilling , A. L. F. de Barros , D. P. P. Andrade , H. Rothard , P. Boduch

We present a ray tracing code to compute integrated cosmological observables on the fly in AMR N-body simulations. Unlike conventional ray tracing techniques, our code takes full advantage of the time and spatial resolution attained by the…

Cosmology and Nongalactic Astrophysics · Physics 2016-08-23 Alexandre Barreira , Claudio Llinares , Sownak Bose , Baojiu Li

The Colour and Stereo Surface Science Imaging System (CaSSIS) of the ExoMars Trace Gas Orbiter returns on average twenty images per day of the Martian surface, most of them in 3 or 4 colours and some of them in stereo. CaSSIS uses a…

High resolution X-ray spectra of the Reflection Grating Spectrometer (RGS) on board the XMM satellite are used to resolve the oxygen K absorption edge. By combining spectra of low and high extinction sources, the observed absorption edge…

Future space-based far infra-red astronomical observations require background limited detector sensitivities and scalable focal plane array solutions to realise their vast potential in observation speed. In this work, a focal plane array of…

Cosmic rays produce molecular cluster ions as they pass through the lower atmosphere. Neutral molecular clusters such as dimers and complexes are expected to make a small contribution to the radiative balance, but atmospheric absorption by…

Atmospheric and Oceanic Physics · Physics 2013-03-08 K. L. Aplin , M. Lockwood

In modern display technology and visualization tools, downscaling images is one of the most important activities. This procedure aims to maintain both visual authenticity and structural integrity while reducing the dimensions of an image at…

Image and Video Processing · Electrical Eng. & Systems 2025-10-29 Suvrojit Mitra , G B Kevin Arjun , Sanjay Ghosh

Kinetic inductance detectors (KID) have great potential in astronomical observation, such as searching for exoplanets, because of their low noise, fast response and photon counting characteristics. In this paper, we present the design…

Instrumentation and Methods for Astrophysics · Physics 2022-09-21 Shiling Yu , Shibo Shu , Ran Duan , Lihui Yang , Di Li

Cosmic ultraviolet background radiation between 3 and 4 Ryd is reprocessed by resonant line absorption in the Lyman series of intergalactic He II. This process results in a sawtooth modulation of the radiation spectrum from the He II Lya…

Astrophysics · Physics 2011-02-11 Piero Madau , Francesco Haardt

The absorption feature in the global spectrum is likely the first 21 cm observable from the cosmic dawn, which provides valuable insights into the earliest history of structure formation. We run a set of high-resolution hydrodynamic…

Cosmology and Nongalactic Astrophysics · Physics 2021-12-23 Yidong Xu , Bin Yue , Xuelei Chen

We study the kinematics of the interstellar medium (ISM) viewed "down the barrel" in 20 gravitationally lensed galaxies during Cosmic Noon ($z=1.5 - 3.5$). We use moderate-resolution spectra ($R\sim4000$) from Keck/ESI and Magellan/MagE to…

The volume of radio-astronomical data is a considerable burden in the processing and storing of radio observations with high time and frequency resolutions and large bandwidths. Lossy compression of interferometric radio-astronomical data…

Instrumentation and Methods for Astrophysics · Physics 2016-11-09 A. R. Offringa

Microwave Kinetic Inductance Devices (MKIDs) are poised to allow for massively and natively multiplexed photon detectors arrays and are a natural choice for the next-generation CMB-Stage 4 experiment which will require 105 detectors. In…

Instrumentation and Methods for Astrophysics · Physics 2019-09-06 Ritoban Basu Thakur , Jason Henning , Peter Stuart Barry , Erik Shirokoff , Qing Yang Tang

Image regridding and coaddition have a wide range of applications in astronomical observations. {\sc Imcom}, an algorithm that provides control over point spread function (PSF) and noise in coadded images, has been found to meet the…

Instrumentation and Methods for Astrophysics · Physics 2026-01-06 Kaili Cao

A readout electronics used in space cosmic-ray charges measurement for multi-channel silicon detector and its performance test results are introduced in this paper. A 64-channel charge sensitive ASIC (VA140) from IDEAS company is adopt in…

Instrumentation and Detectors · Physics 2013-07-12 Zhang Fei , Fan Rui-Rui , Peng Wen-Xi , Dong Yi-Fan , Gong Ke , Liang Xiao-Hua , Liu Ya-Qing , Wang Huan-Yu

Image compression aims to reduce the information redundancy in images. Most existing neural image compression methods rely on side information from hyperprior or context models to eliminate spatial redundancy, but rarely address the channel…

Computer Vision and Pattern Recognition · Computer Science 2023-06-12 Lin Liu , Mingming Zhao , Shanxin Yuan , Wenlong Lyu , Wengang Zhou , Houqiang Li , Yanfeng Wang , Qi Tian

In this paper, we describe a modular data acquisition system developed as the foundation of a cosmic ray detector network. Each detector setup (henceforth referred as a station) is composed of an independent hardware device that can be…