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Astronomy has always been at the forefront of information technology, moving from the era of photographic plates, to digital snapshots and now to digital movies of the sky. This has brought about a data explosion with multi- terabyte…

天体物理仪器与方法 · 物理学 2012-01-06 Ashish Mahabal , Ajit Kembhavi , Roy Williams , Sharmad Navelkar

LISA PathFinder (LPF) will be flown with the objective to test in space key technologies for LISA. However its sensitivity goals are, for good reason, one order of magnitude less than those which LISA will have to meet, both in drag-free…

We present imaging results from a high Galactic latitude survey designed to examine the structure of the Galactic halo. The objective of the survey is to identify candidate halo stars which can be observed spectroscopically to obtain radial…

Modern astronomical surveys, such as the Zwicky Transient Facility (ZTF), are capable of detecting thousands of transient events per year, necessitating the use of automated and scalable data analysis techniques. Recent advances in machine…

天体物理仪器与方法 · 物理学 2025-04-17 Betty X. Hu , Avi Loeb

The Planet Formation Imager (PFI) Project has formed a Technical Working Group (TWG) to explore possible facility architectures to meet the primary PFI science goal of imaging planet formation in situ in nearby star- forming regions. The…

The LOw Frequency ARray (LOFAR) is a next-generation radio telescope which uses thousands of stationary dipoles to observe celestial phenomena. These dipoles are grouped in various 'stations' which are centred on the Netherlands with…

太阳与恒星天体物理 · 物理学 2019-08-13 Richard A. Fallows , Ashish Asgekar , Mario M Bisi , Andrew R. Breen , Sander ter Veen

We report a fully integrated microwave photonic passband filter on a silicon photonic chip. The on-chip integrated microwave photonic filter (IMPF) consists of a high-speed phase modulator (PM), a thermally tunable high-Q micro-disk…

应用物理 · 物理学 2018-08-15 Weifeng Zhang , Jianping Yao

The Physics of the Accelerating Universe (PAU) survey at the William Herschel Telescope (WHT) will use a new optical camera (PAUCam) with a large set of narrow-band filters to perform a photometric galaxy survey with a quasi-spectroscopic…

宇宙学与河外天体物理 · 物理学 2014-06-06 Pol Martí , Ramon Miquel , Francisco J. Castander , Enrique Gaztañaga , Martin Eriksen , Carles Sánchez

We describe the InfraRed Data Reduction (IRDR) software package, a small ANSI C library of fast image processing routines for automated pipeline reduction of infrared (dithered) observations. We developed the software to satisfy certain…

天体物理学 · 物理学 2007-05-23 Chris N. Sabbey , Richard G. McMahon , James R. Lewis , Mike J. Irwin

The 4m International Liquid Mirror Telescope (ILMT) continuously scans a 22$'$ wide strip of the zenithal sky and records the images in three broadband filters (g', r' and i') using a 4K$\times$4K CCD camera. In about 10--12 hours of…

Magnetic particle imaging is a tracer based imaging technique to determine the spatial distribution of superparamagnetic iron oxide nanoparticles with a high spatial and temporal resolution. Due to physiological constraints, the imaging…

医学物理 · 物理学 2022-05-03 Nadine Gdaniec , Marija Boberg , Martin Möddel , Patryk Szwargulski , Tobias Knopp

The development of sensitive large format imaging arrays for the infrared promises to provide revolutionary capabilities for space astronomy. For example, the Infrared Array Camera (IRAC) on SIRTF will use four 256 x 256 arrays to provide…

天体物理学 · 物理学 2016-08-30 D. J. Fixsen , S. H. Moseley , R. G. Arendt

The point-spread function (PSF) of an imaging system describes the response of the system to a point source. Accurately determining the PSF enables one to correct for the combined effects of focussing and scattering within the imaging…

天体物理仪器与方法 · 物理学 2022-11-01 Stefan Johann Hofmeister , Michael Hahn , Daniel Wolf Savin

Phase-averaging is a fundamental approach for investigating periodic and non-stationary phenomena. In fluid dynamics, these can be generated by rotating blades such as propellers/turbines or by pulsed jets. Traditional phase-averaging…

流体动力学 · 物理学 2025-02-20 Enrico Amico , Sara Montagner , Jacopo Serpieri , Gioacchino Cafiero

The Southern Photometric Local Universe Survey (S-PLUS) is a project to map $\sim9300$ sq deg of the sky using twelve bands (seven narrow and five broadbands). Observations are performed with the T80-South telescope, a robotic telescope…

星系天体物理 · 物理学 2024-07-31 Fabio R. Herpich , Felipe Almeida-Fernandes , Gustavo B. Oliveira Schwarz , Erik V. R. Lima , Lilianne Nakazono , Javier Alonso-García , Marcos A. Fonseca-Faria , Marilia J. Sartori , Guilherme F. Bolutavicius , Gabriel Fabiano de Souza , Eduardo A. Hartmann , Liana Li , Luna Espinosa , Antonio Kanaan , William Schoenell , Ariel Werle , Eduardo Machado-Pereira , Luis A. Gutiérrez-Soto , Thaís Santos-Silva , Analia V. Smith Castelli , Eduardo A. D. Lacerda , Cassio L. Barbosa , Hélio D. Perottoni , Carlos E. Ferreira Lopes , Raquel Ruiz Valença , Pierre Augusto Re Martho , Clecio R. Bom , Charles J. Bonatto , Maiara S. Carvalho , Vitor Cernic , Roberto Cid Fernandes , Paula Coelho , Ariana Cortesi , Barbara Cubillos Palma , Lia Doubrawa , Vincenzo Sivero Ferreira Alberice , Fredi Quispe Huaynasi , Gabriel Jacob Perin , Marcelo Jaque Arancibia , Angela Krabbe , Ciria Lima-Dias , Luis Lomelí-Núñez , Raimundo Lopes de Oliveira , Amanda R. Lopes , André Luiz Figueiredo , Elismar Lösch , Felipe Navarete , Julia Mello de Oliveira , Roderik Overzier , Vinicius M. Placco , Fernando V. Roig , Mariana Rubet , André Santos , Victor Hugo Sasse , Julia Thaina-Batista , Sergio Torres-Flores , Timothy C. Beers , Alvaro Alvarez-Candal , Stavros Akras , Swayamtrupta Panda , Guilherme Limberg , José Luis Nilo Castellón , Eduardo Telles , Paulo Afranio Lopes , Gissel Dayana Pardo Montaguth , Leandro Beraldo e Silva , Pedro K. Humire , Marcelo Borges Fernandes , Vinícius Cordeiro , Tiago Ribeiro , Claudia Mendes de Oliveira

The time domain community wants robust and reliable tools to enable production of and subscription to community-endorsed event notification packets (VOEvent). The VAO Transient Facility (VTF) is being designed to be the premier brokering…

天体物理仪器与方法 · 物理学 2015-06-03 Matthew J. Graham , S. G. Djorgovski , Andrew Drake , Ashish Mahabal , Roy Williams , Rob Seaman

The 24 micron array on board the Spitzer Space Telescope is one of three arrays in the Multi-band Imaging Photometer for Spitzer (MIPS) instrument. It provides 5.3 x 5.3 arcmin images at a scale of ~2.5 arcsec per pixel corresponding to…

天体物理学 · 物理学 2007-05-23 Frank J. Masci , Russ Laher , Fan Fang , John Fowler , Wen Lee , Susan Stolovy , Deborah Padgett , Mehrdad Moshir

The Zwicky Transient Facility is a time-domain optical survey that has substantially increased our ability to observe and construct massive catalogs of astronomical objects by use of its 47 square degree camera that can observe in multiple…

A significant challenge in the study of transient astrophysical phenomena is the identification of bogus events, among which human-made satellites and debris in Earth orbit remain major contaminants. Existing pipelines effectively identify…

天体物理仪器与方法 · 物理学 2025-05-14 J. P. Carvajal , F. E. Bauer , I. Reyes-Jainaga , F. Förster , A. M. Muñoz Arancibia , M. Catelan , P. Sánchez-Sáez , C. Ricci , A. Bayo

Indirect Time-of-Flight (iToF) cameras are a promising depth sensing technology. However, they are prone to errors caused by multi-path interference (MPI) and low signal-to-noise ratio (SNR). Traditional methods, after denoising, mitigate…

计算机视觉与模式识别 · 计算机科学 2021-12-22 Felipe Gutierrez-Barragan , Huaijin Chen , Mohit Gupta , Andreas Velten , Jinwei Gu