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Modern Multimessenger Astronomy is a powerful instrument for performing cosmological crucial tests of the Standard Cosmological Model in the wide redshift interval up to $z \sim 10$. This is principally important for discussion related to…

宇宙学与河外天体物理 · 物理学 2020-09-25 S. I. Shirokov , I. V. Sokolov , V. V. Vlasyuk , L. Amati , V. V. Sokolov , Yu. V. Baryshev

In this letter, a new strategy to enhance the discrimination of high energy gamma rays from the huge charged cosmic rays background in large cosmic rays ground arrays is presented. This strategy is based on the introduction of a new simple…

高能物理 - 唯象学 · 物理学 2022-03-14 R. Conceição , B. S. González , M. Pimenta , B. Tomé

This paper introduces a statistical method to decide whether two blocks in a pair of of images match reliably. The method ensures that the selected block matches are unlikely to have occurred "just by chance." The new approach is based on…

计算机视觉与模式识别 · 计算机科学 2017-12-08 Neus Sabater , Andrés Almansa , Jean-Michel Morel

The gamma distribution is a useful model for small area prediction of a skewed response variable. We study the use of the gamma distribution for small area prediction. We emphasize a model, called the gamma-gamma model, in which the area…

统计方法学 · 统计学 2023-01-18 Yanghyeon Cho , Emily Berg

We study the impact of eccentricity on gravitational-wave parameter estimation for binary neutron star systems. For signals with small eccentricity injected into the advanced LIGO sensitivity, we perform Bayesian parameter estimation using…

广义相对论与量子宇宙学 · 物理学 2022-06-13 Hee-Suk Cho

This review outlines concepts of mathematical statistics, elements of probability theory, hypothesis tests and point estimation for use in the analysis of modern astronomical data. Least squares, maximum likelihood, and Bayesian approaches…

天体物理仪器与方法 · 物理学 2012-05-10 Eric D. Feigelson , G. Jogesh Babu

In the absence of any compelling physical model, cosmological systematics are often misrepresented as statistical effects and the approach of marginalising over extra nuisance systematic parameters is used to gauge the effect of the…

天体物理学 · 物理学 2009-10-20 T. D. Kitching , A. Amara , F. B. Abdalla , B. Joachimi , A. Refregier

The measurement of $\gamma$-rays originating from active galactic nuclei offers the unique opportunity to study the propagation of very-high-energy photons over cosmological distances. Most prominently, $\gamma$-rays interact with the…

The Laser Interferometer Space Antenna (LISA) is expected to detect gravitational radiation from a large number of compact binary systems. We present a method by which these signals can be identified and have their parameters estimated. Our…

广义相对论与量子宇宙学 · 物理学 2009-11-11 Richard Umstätter , Nelson Christensen , Martin Hendry , Renate Meyer , Vimal Simha , John Veitch , Sarah Vigeland , Graham Woan

Telescopes are much more expensive than astronomers, so it is essential to minimize required sample sizes by using the most data-efficient statistical methods possible. However, the most commonly used model-independent techniques for…

天体物理仪器与方法 · 物理学 2018-01-24 Charles L. Steinhardt , Adam S. Jermyn

Estimation of time delays from a noisy and gapped data is one of the simplest data analysis problems in astronomy by its formulation. But as history of real experiments show, the work with observed data sets can be quite complex and…

天体物理仪器与方法 · 物理学 2011-05-31 A. Hirv , N. Olspert , J. Pelt

Unevenly spaced time series are common in astronomy because of the day-night cycle, weather conditions, dependence on the source position in the sky, allocated telescope time, corrupt measurements, for example, or be inherent to the…

天体物理仪器与方法 · 物理学 2014-02-03 Lorenzo Rimoldini

Over the last decade, the Imaging Air Cerenkov technique has proven itself to be an extremely powerful means to study very energetic gamma-radiation from a number of astrophysical sources in a regime which is not practically accessible to…

天体物理学 · 物理学 2010-11-24 I. de la Calle Perez , S. D. Biller

Measuring neutron star radii with spectroscopic and timing techniques relies on the combination of multiple observables to break the degeneracies between the mass and radius introduced by general relativistic effects. Here, we explore a…

高能天体物理现象 · 物理学 2015-10-21 Feryal Ozel , Dimitrios Psaltis

The primary scientific results of the future space-based gravitational wave interferometer LISA will come from the parameter inference of a large variety of gravitational wave sources. However, the presence of calibration errors could…

广义相对论与量子宇宙学 · 物理学 2022-08-31 Etienne Savalle , Jonathan Gair , Lorenzo Speri , Stanislav Babak

We study numerically the effects of static imperfections and residual couplings between qubits for the quantum phase estimation algorithm with two qubits. We show that the success probability of the algorithm is affected significantly more…

量子物理 · 物理学 2009-11-13 Ignacio Garcia-Mata , Dima L. Shepelyansky

We discuss the least-square and linear-regression methods, which are relevant for a reliable determination of good nuclear-mass-model parameter sets and their errors. In this perspective, we define exact and inaccurate models and point out…

核理论 · 物理学 2008-11-26 J. Toivanen , J. Dobaczewski , M. Kortelainen , K. Mizuyama

The measurement of a reaction cross section from a pulse height spectrum is a ubiquitous problem in experimental nuclear physics. In $\gamma$-ray spectroscopy, this is accomplished frequently by measuring the intensity of full-energy…

数据分析、统计与概率 · 物理学 2017-10-05 J. R. Dermigny , C. Iliadis , M. Q. Buckner , K. J. Kelly

How should researchers analyze randomized experiments in which the main outcome is latent and measured in multiple ways but each measure contains some degree of error? We first identify a critical study-specific noncomparability problem in…

计量经济学 · 经济学 2026-01-13 Jiawei Fu , Donald P. Green

We broadly explore the effects of systematic errors on reverberation mapping lag uncertainty estimates from {\tt JAVELIN} and the interpolated cross-correlation function (ICCF) method. We focus on simulated lightcurves from random…

星系天体物理 · 物理学 2020-01-15 Zhefu Yu , C. S. Kochanek , B. M. Peterson , Y. Zu , W. N. Brandt , E. M. Cackett , M. M. Fausnaugh , I. M. McHardy