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The study of the high-energy (MeV-GeV) part of GRBs spectrum can play a crucial role in investigating the physics of the prompt emission, but it is often hampered by low statistic and the paucity of GeV observations. In this work, we…

高能天体物理现象 · 物理学 2024-05-29 M. E. Ravasio , G. Ghirlanda , G. Ghisellini

In this paper, a novel linear algorithm is proposed for state estimation including bad data detection of power systems that are monitored both by conventional and synchrophasor measurements. Both types of data are treated simultaneously and…

系统与控制 · 电气工程与系统科学 2020-01-30 Aleksandar Jovicic , Gabriela Hug

The availability of vector magnetogram sequences with sufficient accuracy and cadence to estimate the time derivative of the magnetic field allows us to use Faraday's law to find an approximate solution for the electric field in the…

太阳与恒星天体物理 · 物理学 2015-05-27 George H. Fisher , Brian T. Welsch , William P. Abbett

Inconsistent calculation of grid emission factors (EF) can result in widely divergent corporate greenhouse gas (GHG) emissions reports. We dissect this issue through a comprehensive literature review, identifying nine key aspects - each…

物理与社会 · 物理学 2024-03-15 Malte Schäfer , Felipe Cerdas , Christoph Herrmann

A generalization of the maximum noise fraction (MNF) transform is proposed. Powers of each band are included as new bands before the MNF transform is performed. The generalized MNF (GMNF) is shown to perform better than the MNF on a time…

数据分析、统计与概率 · 物理学 2009-11-06 Christopher Gordon

The minimum variability timescale (MVT) is a key observable used to probe the central engines of Gamma-Ray Bursts (GRBs) by constraining the emission region size and the outflow Lorentz factor. However, its interpretation is often…

高能天体物理现象 · 物理学 2026-02-13 S. Bala , P. Veres , A. Goldstein , R. Sonawane , R. Samanta , S. Iyyani

Polarized magnetic dipole (M1) emission lines provide important diagnostics for the magnetic field dominating the evolution of the solar corona. This paper advances a multi-line technique using specific combinations of M1 lines to infer the…

太阳与恒星天体物理 · 物理学 2020-02-12 Gabriel I. Dima , Thomas A. Schad

We uncover two precise interpretations of traditional electroweak fine-tuning (FT) measures that were historically missed. (i) a statistical interpretation: the traditional FT measure shows the change in plausibility of a model in which a…

高能物理 - 唯象学 · 物理学 2025-01-27 Andrew Fowlie , Gonzalo Herrera

We use cosmological constraints from current data sets and a figure of merit (FoM) approach to probe any deviations from general relativity (GR) at cosmological scales. The FoM approach is used to study the constraining power of various…

宇宙学与河外天体物理 · 物理学 2011-12-30 Jason Dossett , Jacob Moldenhauer , Mustapha Ishak

The analysis of Fermi Large Area Telescope (LAT) gamma-ray data in a given Region Of Interest (RoI) usually consists of performing a binned log-likelihood fit in order to determine the sky model that, after convolution with the instrument…

高能天体物理现象 · 物理学 2021-12-08 P. Bruel

The energy transition, crucial for tackling the climate crisis, demands integrating numerous distributed, renewable energy sources into existing grids. Along with climate change and consumer behavioral changes, this leads to changes and…

系统与控制 · 电气工程与系统科学 2024-09-05 Alban Puech , Jonas Weiss , Thomas Brunschwiler , Hendrik F. Hamann

A novel application of machine-learning (ML) based image processing algorithms is proposed to analyze an all-sky map (ASM) obtained using the Fermi Gamma-ray Space Telescope. An attempt was made to simulate a one-year ASM from a…

高能天体物理现象 · 物理学 2021-06-02 Shogo Sato , Jun Kataoka , Soichiro Ito , Jun'ichi Kotoku , Masato Taki , Asuka Oyama , Takaya Toyoda , Yuki Nakamura , Marino Yamamoto

Empirical Mode Decomposition(EMD) is an adaptive data analysis technique for analyzing nonlinear and nonstationary data[1]. EMD decomposes the original data into a number of Intrinsic Mode Functions(IMFs)[1] for giving better physical…

统计方法学 · 统计学 2016-01-27 Sumit Kumar Ram , Marta Molinas

We propose an efficient algorithm for the evaluation of the potential and its gradient of gravitational/electrostatic $N$-body systems, which we call particle mesh multipole method (PMMM or PM$^3$). PMMM can be understood both as an…

天体物理仪器与方法 · 物理学 2014-10-20 Keigo Nitadori

An accurate load forecast is always important for the power industry and energy players as it enables stakeholders to make critical decisions. In addition, its importance is further increased with growing uncertainties in the generation…

信号处理 · 电气工程与系统科学 2018-11-26 Muhammad Qamar Raza , N. Mithulananthan , Jiaming Li , Kwang Y. Lee

Diagnostic diagrams of forbidden lines have been a useful tool for observers in astrophysics for many decades now. They are used to obtain information on the basic physical properties of thin gaseous nebulae. Some diagnostic diagrams are in…

天体物理仪器与方法 · 物理学 2015-06-18 Bastian Proxauf , Silvia Oettl , Stefan Kimeswenger

Context. Obtaining precise stellar and wind properties and abundance patterns of massive stars is crucial to understanding their nature and interactions with their environments, as well as to constrain their evolutionary paths and…

太阳与恒星天体物理 · 物理学 2020-11-05 J. Puls , F. Najarro , J. O. Sundqvist , K. Sen

Line-intensity mapping (LIM) is quickly attracting attention as an alternative technique to probe large-scale structure and galaxy formation and evolution at high redshift. LIM one-point statistics are motivated because they provide access…

宇宙学与河外天体物理 · 物理学 2024-03-06 José Luis Bernal

The new numerical version of the Wigner approach to quantum mechanics for treatment thermodynamic properties of strongly coupled systems of particles has been developed for extreme conditions, when analytical approximations obtained in…

等离子体物理 · 物理学 2018-01-17 A. S. Larkin , V. S. Filinov , V. E. Fortov

We present a practical three-step procedure of using the Standard Model effective field theory (SM EFT) to connect ultraviolet (UV) models of new physics with weak scale precision observables. With this procedure, one can interpret…

高能物理 - 唯象学 · 物理学 2015-07-10 Brian Henning , Xiaochuan Lu , Hitoshi Murayama