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In this paper, we demonstrate a new method for fitting galaxy profiles which makes use of the full multi-wavelength data provided by modern large optical-near-infrared imaging surveys. We present a new version of GALAPAGOS, which utilises a…

Semantic communication is an increasingly popular framework for wireless image transmission due to its high communication efficiency. With the aid of the joint-source-and-channel (JSC) encoder implemented by neural network, semantic…

信息论 · 计算机科学 2022-12-02 Maojun Zhang , Yang Li , Zezhong Zhang , Guangxu Zhu , Caijun Zhong

We describe the technique used to develop on-orbit calibrators for IRAC and validate the method for either K0-M0III or A0-A5V stars. For SIRTF, the approach uses all available optical, NIR, and MIR photometry, and yields absolute spectra…

天体物理学 · 物理学 2008-11-26 Martin Cohen , S. T. Megeath , Peter L. Hammersley , Fabiola Martin-Luis , John Stauffer

Astronomical images and datasets are increasingly high-resolution and multi-dimensional. The vast majority of astronomers perform all of their visualisation and analysis tasks on low-resolution, two-dimensional desktop monitors. If there…

天体物理仪器与方法 · 物理学 2016-01-15 C. J. Fluke , D. G. Barnes

Semantic communication has undergone considerable evolution due to the recent rapid development of artificial intelligence (AI), significantly enhancing both communication robustness and efficiency. Despite these advancements, most current…

图像与视频处理 · 电气工程与系统科学 2024-05-24 Jiarun Ding , Peiwen Jiang , Chao-Kai Wen , Shi Jin

As the demand for software to support the processing and analysis of massive radio astronomy datasets increases in the era of the SKA, we demonstrate the interactive workflow building, data mining, processing, and visualisation capabilities…

天体物理仪器与方法 · 物理学 2022-07-14 Dylan Grigg , Steven Tingay , Marcin Sokolowski , Randall Wayth

The ISO/IEC JPEG 2000 image coding standard is a family of source coding algorithms targeting high-resolution image communications. JPEG 2000 features highly scalable embedded coding features that allow one to interactively zoom out to…

The ambitious scientific goals of the SKA require a matching capability for calibration of atmospheric propagation errors, which contaminate the observed signals. We demonstrate a scheme for correcting the direction-dependent ionospheric…

天体物理仪器与方法 · 物理学 2018-07-18 Maria Rioja , Richard Dodson , Thomas Franzen

Radio astronomy observations in the coming decade will require new levels of sensitivity while mapping large regions of space with much greater efficiency than is achieved with current telescopes. This requires new instrumentation with the…

天体物理仪器与方法 · 物理学 2009-09-30 Matthew A. Morgan , J. Richard Fisher

Next-generation continuum surveys will be strongly constrained by dynamic range and confusion. For example, the ASKAP-EMU (Evolutionary Map of the Universe) project will map 75% of the sky at 20cm to a sensitivity of 10 microJy - some 45…

宇宙学与河外天体物理 · 物理学 2014-11-20 Ray P. Norris , the EMU team

As of 2023, the Square Kilometre Array will constitute the world's largest radio telescope, offering unprecedented capabilities for a diverse science programme in radio astronomy. At the same time, the SKA will be ideally suited to detect…

天体物理仪器与方法 · 物理学 2015-08-17 T. Huege , J. D. Bray , S. Buitink , R. Dallier , R. D. Ekers , H. Falcke , A. Haungs , C. W. James , L. Martin , B. Revenu , O. Scholten , F. G. Schröder , A. Zilles

Band structure engineering in surface acoustic wave (SAW) metamaterials could advance both classical telecommunications and quantum information processing. However, no imaging technique has demonstrated the necessary capability to resolve…

We have designed and implemented a novel way to process wide-field astronomical data within a distributed environment of hardware resources and humanpower. The system is characterized by integration of archiving, calibration, and…

天体物理仪器与方法 · 物理学 2011-10-17 J. P. McFarland , G. Verdoes-Kleijn , G. Sikkema , E. M. Helmich , D. R. Boxhoorn , E. A. Valentijn

Astronomy produces extremely large data sets from ground-based telescopes, space missions, and simulation. The volume and complexity of these rich data sets require new approaches and advanced tools to understand the information contained…

天体物理仪器与方法 · 物理学 2014-02-25 Demitri Muna , Eric Huff

The large surveys and sensitive instruments of modern astronomy are turning ever more examples of variable objects, many of which are extending the parameter space to testing theories of stellar evolution and accretion. Future projects such…

天体物理学 · 物理学 2015-05-13 T. R. Marsh

Large-scale beamforming with radio interferometers has the potential to revolutionize the science done with pulsars and fast radio bursts by improving the survey efficiency for these sources. We describe a wide-field beamformer for the…

天体物理仪器与方法 · 物理学 2022-11-08 Weiwei Chen , Ewan Barr , Ramesh Karuppusamy , Michael Kramer , Benjamin Stappers

We present sagui, a modular framework for the analysis of multi-band imaging data in spatially resolved galaxies, with synergies to integral-field spectroscopy (IFS). Building on the spectro-spatial paradigm introduced by capivara for IFS…

Looking deep into the space in search for truth has been a long time goal of humanity. With the development of new technologies and observational techniques, we are now well equipped to see objects billions of light years away from us. In…

宇宙学与河外天体物理 · 物理学 2021-07-23 Syed Faisal ur Rahman , Muhammad Jawed Iqbal