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Related papers: MCALF: Multi-Component Atmospheric Line Fitting

200 papers

Preventive control is a crucial strategy for power system operation against impending natural hazards, and its effectiveness fundamentally relies on the realism of scenario generation. While most existing studies employ sequential Monte…

Systems and Control · Electrical Eng. & Systems 2025-11-21 Ziyue Li , Guanglun Zhang , Grant Ruan , Haiwang Zhong , Chongqing Kang

Laser frequency combs (LFCs) are an important component of Doppler radial velocity (RV) spectroscopy that pushes fractional precision to the $10^{-10}$ level, as required to identify and characterize Earth-like exoplanets. However, large…

Instrumentation and Methods for Astrophysics · Physics 2025-02-11 Pooja Sekhar , Connor Fredrick , Peter Zhong , Abijith S Kowligy , Arman Cingöz , Scott A Diddams

With the rapid development of telescopes, both temporal cadence and the spatial resolution of observations are increasing. This in turn generates vast amount of data, which can be efficiently searched only with automated detections in order…

Solar and Stellar Astrophysics · Physics 2019-01-30 Q. Hao , P. F. Chen , C. Fang

The published Mount Wilson Doppler-shift measurements of the solar velocity field taken in 1967--1982 are revisited with a more accurate model, which includes two terms representing the meridional flow and three terms corresponding to the…

Solar and Stellar Astrophysics · Physics 2015-05-18 Valeri V. Makarov

Observations of chromospheric spectral lines near and beyond the solar limb provide information on the solar chromosphere without any photospheric contamination. For ground-based observations near and off the limb with real-time image…

Solar and Stellar Astrophysics · Physics 2012-03-12 C. Beck , R. Rezaei

The calibration of weather radar for detecting meteorological phenomena has advanced rapidly, aiming to enhance accuracy. Utilizing an unmanned aerial vehicle (UAV) equipped with a suspended metal sphere introduces an efficient calibration…

Signal Processing · Electrical Eng. & Systems 2024-07-09 Jiabiao Zhao , Da Li , Jiayuan Cui , Houjun Sun , Jianjun Ma

A new measuring technique dedicated to bubble velocity and size measurements in complex bubbly flows such as those occurring in bubble columns is proposed. This sensor combines the phase detection capability of a conical optical fiber, with…

Fluid Dynamics · Physics 2021-09-17 Anthony Lefebvre , Yann Mezui , Martin Obligado , Stéphane Gluck , Alain Cartellier

We analyze a grid of radiative hydrodynamic simulations of solar flares to study the energy balance and response of the atmosphere to nonthermal electron beam heating. The appearance of chromospheric bubbles is one of the most notable…

Solar and Stellar Astrophysics · Physics 2020-05-22 Aaron Reid , Bogdan Zhigulin , Mats Carlsson , Mihalis Mathioudakis

Component separation is one of the key stages of any modern, cosmic microwave background (CMB) data analysis pipeline. It is an inherently non-linear procedure and typically involves a series of sequential solutions of linear systems with…

Numerical Analysis · Mathematics 2020-07-01 J. Papež , L. Grigori , R. Stompor

Magnetic clouds (MCs) are "magnetized plasma clouds" moving in the solar wind. MCs transport magnetic flux and helicity away from the Sun. These structures are not stationary but feature temporal evolution as they propagate in the solar…

Solar and Stellar Astrophysics · Physics 2015-05-30 G. Dalakishvili , J. Kleimann , H. Fichtner , S. Poedts

The velocity of dislocations is derived analytically to incorporate and predict the intriguing effects induced by the preferential solute segregation and Cottrell atmospheres in both two-dimensional and three-dimensional binary systems of…

Materials Science · Physics 2021-05-14 Marco Salvalaglio , Axel Voigt , Zhi-Feng Huang , Ken R. Elder

Solar images taken simultaneously at different wavelengths in the EUV are widely used for understanding structures such as flares, coronal holes, loops, etc. The line-of-sight integration and the finite spectral resolution of EUV…

Astrophysics · Physics 2009-11-13 T. Dudok de Wit , F. Auchere

Based on luminosity contributions, we develop a spectroscopic modelling method to derive atmospheric parameters of component stars in binary systems. The method is designed for those spectra of binaries which show double-lined features due…

Solar and Stellar Astrophysics · Physics 2023-03-15 Xiang-Lei Chen , A-Li Luo , Jian-Jun Chen , Rui Wang , Xiao-Bin Zhang , Wen Hou , Bo Qiu , Fang Zuo

The Sun provides an excellent natural laboratory for nonlinear phenomena. We use motions of magnetic bright points on the solar surface, at the smallest scales yet observed, to study the small scale dynamics of the photospheric plasma. The…

Astrophysics · Physics 2009-11-06 J. K. Lawrence , A. C. Cadavid , A. Ruzmaikin , T. E. Berger

A new method of measurement of the velocities of solar electron antineutrinos is proposed. The method is based on the assumption, that if the neutrino detector having a shape of a pipe and providing a proper angular resolution, is directed…

Nuclear Theory · Physics 2007-05-23 Elmir Dermendjiev

We explore the radial velocity performance benefits of coupling starlight to a fast-scanning interferometer and a fast-readout spectrometer with zero readout noise. By rapidly scanning an interferometer we can decouple wavelength…

Instrumentation and Methods for Astrophysics · Physics 2015-11-18 Rebecca Jensen-Clem , Philip S. Muirhead , Michael Bottom , J. Kent Wallace , Gautam Vasisht , John Asher Johnson

A conformal coupling of the metric in the Jordan frame to the energy-momentum tensor, screens the scalar field gravitational coupling strength $G$ in modified gravity (MOG). The scalar field acquires a mass which depends on the local matter…

General Relativity and Quantum Cosmology · Physics 2014-10-14 J. W. Moffat

We investigate the impact of peculiar velocity effects due to the motion of the solar system relative to the microwave background (CMB) on high resolution CMB experiments. It is well known that on the largest angular scales the combined…

Astrophysics · Physics 2009-11-07 Anthony Challinor , Floor van Leeuwen

Aerosols found in the atmosphere affect the climate and worsen air quality. To mitigate these adverse impacts, aerosol formation and aerosol chemistry in the atmosphere need to be better mapped out and understood. Currently, mass…

Atmospheric and Oceanic Physics · Physics 2024-06-27 Hilda Sandström , Matti Rissanen , Juho Rousu , Patrick Rinke

Understanding solar coronal magnetic fields is crucial to address the long-standing mysteries of the solar corona and solar wind. Although routine photospheric magnetic fields (MFs) are available for decades, coronal MFs are rarely…

Solar and Stellar Astrophysics · Physics 2021-12-21 K. Sasikumar Raja , Suresh Venkata , Jagdev Singh , B. Raghavendra Prasad