Results 21 to 30 of about 2,129 (197)

Equatorially trapped Rossby waves in radiative stars

open access: yesAstronomische Nachrichten, Volume 344, Issue 10, December 2023., 2023
Abstract Observations by recent space missions reported the detection of Rossby waves (r‐modes) in light curves of many stars (mostly A, B, and F spectral types) with outer radiative envelope. This article aims to study the theoretical dynamics of Rossby‐type waves in such stars. Hydrodynamic equations in a rotating frame were split into horizontal and
Mariam Albekioni   +4 more
wiley   +1 more source

FRA–A new fast, robust, and automated pipeline for the detection and measurement of solar‐like oscillations in time‐series photometry of red‐giant stars

open access: yesAstronomische Nachrichten, Volume 344, Issue 5, June 2023., 2023
Abstract We developed, tested, and validated a new Fast, Robust, and Automated (FRA) tool to detect solar‐like oscillations. FRA is based on the detection and measurement of the frequency of maximum oscillation power νmax$$ {\nu}_{\mathrm{max}} $$, without relying on the detection of a regular frequency spacing to guide the search.
Charlotte Gehan   +3 more
wiley   +1 more source

On the application of machine learning in astronomy and astrophysics: A text‐mining‐based scientometric analysis

open access: yesWIREs Data Mining and Knowledge Discovery, Volume 12, Issue 5, September/October 2022., 2022
This work presents a text‐mining‐based scientometric analysis of the scientific output in the last three decades regarding the use of artificial intelligence and machine learning in the fields of astronomy and astrophysics. Abstract Since the beginning of the 21st century, the fields of astronomy and astrophysics have experienced significant growth at ...
José‐Víctor Rodríguez   +2 more
wiley   +1 more source

Localizing flares to understand stellar magnetic fields and space weather in exo‐systems

open access: yesAstronomische Nachrichten, Volume 343, Issue 4, May 2022., 2022
Abstract Stars are uniform spheres, but only to first order. The way in which stellar rotation and magnetism break this symmetry places important observational constraints on stellar magnetic fields, and factors in the assessment of the impact of stellar activity on exoplanet atmospheres.
Ekaterina Ilin   +2 more
wiley   +1 more source

Detection and Optimization of Traffic Networks Based on Voronoi Diagram

open access: yesDiscrete Dynamics in Nature and Society, Volume 2021, Issue 1, 2021., 2021
Traffic peak is an important parameter of modern transport systems. It can be used to calculate the indices of road congestion, which has become a common problem worldwide. With accurate information about traffic peaks, transportation administrators can make better decisions to optimize the traffic networks and therefore enhance the performance of ...
Rui Tao   +6 more
wiley   +1 more source

Asteroseismology with SuperWASP [PDF]

open access: yesProceedings of the International Astronomical Union, 2013
AbstractThe highly successful SuperWASP planetary transit finding programme has surveyed a large fraction of both the northern and southern skies. There now exists in its archive over 420 billion photometric measurements for more than 31 million stars.
Smalley, Barry, Smalley, Barry
openaire   +4 more sources

Prospects for asteroseismology [PDF]

open access: yesAstrophysics and Space Science, 2009
Proc. HELAS Workshop on 'Synergies between solar and stellar modelling', eds M. Marconi, D. Cardini & M. P. Di Mauro, Astrophys.
Christensen-Dalsgaard, Jørgen   +1 more
openaire   +5 more sources

A review on Asteroseismology [PDF]

open access: yesProceedings of Frontier Research in Astrophysics – II — PoS(FRAPWS2016), 2017
Over the last decade, thanks to the successful space missions launched to detect stellar pulsations, Asteroseismology has produced an extraordinary revolution in astrophysics, unveiling a wealth of results on structural properties of stars over a large part of the H-R diagram.
Maria Pia, di Mauro
openaire   +4 more sources

Asteroseismology [PDF]

open access: yesPhysics Today, 2015
Pulsations known as starquakes can provide precious glimpses into a star’s interior—and clues to how the star will live and die.
openaire   +2 more sources

Saturn's Rings as a Seismograph to Probe Saturn's Internal Structure

open access: yesAGU Advances, Volume 1, Issue 2, June 2020., 2020
As it has already done for Earth, the Sun, and the stars, seismology has the potential to radically change the way the interiors of giant planets are studied. In a sequence of events foreseen by only a few, observations of Saturn's rings by the Cassini spacecraft have rapidly broken ground on giant planet seismology. Gravity directly couples the planet'
Christopher R. Mankovich
wiley   +1 more source

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