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The Spectral and Photometric Imaging Receiver (SPIRE) on the European Space Agency's Herschel Space Observatory utilizes a pioneering design for its imaging spectrometer in the form of a Fourier Transform Spectrometer (FTS). The standard…

The study of the scaling limit of two-dimensional models of statistical mechanics within the framework of integrable field theory is illustrated through the example of the RSOS models. Starting from the exact description of regime III in…

High Energy Physics - Theory · Physics 2009-10-31 G. Delfino

Radio interferometers provide the means to perform the wide-field-of-view (FoV), high-sensitivity observations required for modern radio surveys. As computing power per cost has decreased, there has been a move towards larger arrays of…

Instrumentation and Methods for Astrophysics · Physics 2025-11-12 Yunpeng Men , Ewan Barr , Amit Bansod , Weiwei Chen , Jason Wu , John Antoniadis , Jan Behrend , Niclas Esser , Oliver Polch , Gundolf Wieching , Tobias Winchen

We present performance simulations for a proposed visible-light, multi-conjugate adaptive optics system for the 10-meter W. M. Keck I telescope that aims to deliver near diffraction-limited angular resolution at optical wavelengths. Our…

We present near-infrared spectroscopic diagnostics that can be used to identify FU Orionis stars (FUOrs). FUOrs are young stellar objects (YSOs) that are currently in a state of extreme outburst, caused by enhanced mass {inflow} from their…

Solar and Stellar Astrophysics · Physics 2026-05-14 Evan R. Portnoi , Lynne A. Hillenbrand , Adolfo S. Carvalho

This paper proposes a novel, highly effective spectrum sensing algorithm for cognitive radio and whitespace applications. The proposed spectral covariance sensing (SCS) algorithm exploits the different statistical correlations of the…

Networking and Internet Architecture · Computer Science 2010-05-07 Jaeweon Kim , Jeffrey G. Andrews

A fault-tolerant quantum computer must decode and correct errors faster than they appear. The faster errors can be corrected, the more time the computer can do useful work. The Union-Find (UF) decoder is promising with an average time…

Quantum Physics · Physics 2023-05-16 Namitha Liyanage , Yue Wu , Alexander Deters , Lin Zhong

We present the Spectroscopic Classification of Astronomical Transients (SCAT) survey, which is dedicated to spectrophotometric observations of transient objects such as supernovae and tidal disruption events. SCAT uses the SuperNova…

The Observatory Science Operations (OSO) subsystem of the SKAO consists of a range of complex tools which will be used to propose, design, schedule and execute observations. Bridging the gap between the science and telescope domains is the…

Instrumentation and Methods for Astrophysics · Physics 2024-07-25 Thaddeus Kenny , Stewart J. Williams , Viivi Pursiainen , Elizabeth S. Bartlett , Brendan McCollam , Andrew D. Biggs , Sean Ellis , Rupert Lung

The parallelization, design and scalability of the \sky code to search for periodic gravitational waves from rotating neutron stars is discussed. The code is based on an efficient implementation of the F-statistic using the Fast Fourier…

General Relativity and Quantum Cosmology · Physics 2015-02-03 Gevorg Poghosyan , Sanchit Matta , Achim Streit , Michał Bejger , Andrzej Królak

This work advocates the benefit of high resolution spectroscopic monitoring in the study of transients (local group transients given the available collecting power). As an exemplary analysis, we focus on the optical transient…

Solar and Stellar Astrophysics · Physics 2026-05-21 Elena Mason , Steven N. Shore , Andrea Pastorello , Paolo Di Marcantonio

We describe the fast transient classification algorithm in the center of the kilonova (KN) science module currently implemented in the Fink broker and report classification results based on simulated catalogs and real data from the ZTF…

Instrumentation and Methods for Astrophysics · Physics 2023-10-06 B. Biswas , E. E. O. Ishida , J. Peloton , A. Moller , M. V. Pruzhinskaya , R. S. de Souza , D. Muthukrishna

The accurate computation of low-energy spectra of strongly correlated quantum many-body systems, typically accessed via Green's-functions, is a long-standing problem posing enormous challenges to numerical methods. When the spectral…

Strongly Correlated Electrons · Physics 2026-03-20 Sebastian Paeckel

Strong evidence exists for a highly significant correlation between the radio flux density and gamma-ray energy flux in blazars revealed by Fermi. However, there are central issues that need to be clarified in this field: what are the…

High Energy Astrophysical Phenomena · Physics 2019-08-15 M. Giroletti , M. Orienti , F. D'Ammando , F. Massaro , G. Tosti , R. Lico , G. Giovannini , I. Agudo , A. Alberdi , H. Bignall , M. Pandey-Pommier , A. Wolter

We propose an efficient algorithm for solving orthogonal canonical correlation analysis (OCCA) in the form of trace-fractional structure and orthogonal linear projections. Even though orthogonality has been widely used and proved to be a…

Machine Learning · Computer Science 2019-09-26 Leihong Zhang , Li Wang , Zhaojun Bai , Ren-cang Li

Image subtraction in astronomy is a tool for transient object discovery and characterization, particularly useful in wide fields, and is well suited for moving or photometrically varying objects such as asteroids, extra-solar planets and…

Instrumentation and Methods for Astrophysics · Physics 2013-01-09 Steven Hartung

We introduce simulations aimed at assessing how well weak gravitational lensing of 21cm radiation from the Epoch of Reionization ($z \sim 8$) can be measured by an SKA-like radio telescope. A simulation pipeline has been implemented to…

Cosmology and Nongalactic Astrophysics · Physics 2017-12-21 Alessandro Romeo , R. Benton Metcalf , Alkistis Pourtsidou

The electron optics of a 90 degree spherical deflecting analyzer (SDA-90) is investigated with an imaging matrix formalism. As a preanalyzer in the UTA-neutrino experiment, high transmission and reasonable energy resolution are the choices…

Optics · Physics 2007-05-23 Chong-Yu Ruan , Scott Nguyen , Manfred Fink

The application of VLBI to scientific problems has undergone a relentless expansion since its conception, yet the potential for further expansion is still large. We are on the cusp of revolutionary progress given the arrival of a host of…

Instrumentation and Methods for Astrophysics · Physics 2023-05-03 María J. Rioja , Richard Dodson

With the rapid development of asteroseismology thanks to space-based photometry missions such as CoRoT, Kepler, TESS, and in the future, PLATO, and the use of inversion techniques, quasi-model-independent constraints on the stellar…

Solar and Stellar Astrophysics · Physics 2022-07-20 J. Bétrisey , G. Buldgen