Results 151 to 160 of about 6,468 (258)

Helioseismology in a bottle: modal acoustic velocimetry

New Journal of Physics, 2014
Measurement of the differential rotation of the Sunʼs interior is one of the great achievements of helioseismology, providing important constraints for stellar physics. The technique relies on observing and analyzing rotationally-induced splittings of p -
Santiago Andrés Triana, Daniel S Zimmerman, Henri-Claude Nataf, Aurélien Thorette, Vedran Lekic, Daniel P Lathrop   +5 more
doaj   +1 more source

Seismic signature of a magnetic field in the γ Doradus star KIC 2309579

Astronomy & Astrophysics
Context. Internal magnetic fields have recently been detected and measured in the radiative core of red giant stars using asteroseismology. As they are one of the progenitors of red giant stars and exhibit high radial order gravity modes, γ Doradus stars
Ihallaine S., Ballot J., Lignières F., Ferrié L., Charpinet S., Galoy M., Li G.   +6 more
doaj   +1 more source

Inferences on Stellar Activity and Stellar Cycles from Asteroseismology

, 2014
The solar activity cycle can be studied using many different types of observations, such as counting sunspots, measuring emission in the Ca II H&K lines, magnetograms, radio emissions, etc. One of the more recent ways of studying solar activity is to
Basu, Sarbani, Chaplin, William J.
core   +1 more source

Asteroseismology of sun-like stars with Kepler

, 2013
Asteroseismology is the study of oscillations in stars. Oscillation properties depend on the interior of the star and so probe the unseen depths. Asteroseismology therefore has an important role in understanding stellar physics.
White, Timothy
core  

Asteroseismology of 16,000 Kepler Red Giants: Global Oscillation Parameters, Masses, and Radii

, 2018
The Kepler mission has provided exquisite data to perform an ensemble asteroseismic analysis on evolved stars. In this work we systematically characterize solar-like oscillations and granulation for 16,094 oscillating red giants, using end-of-mission ...
Timothy R. Bedding, Khanna, Shourya, Stello, Dennis, Simon J. Murphy, Shourya Khanna, Jie Yu, Dennis Stello, Hon, Marc, Huber, Daniel, Marc Hon, Murphy, Simon J., Bedding, Timothy R., Daniel Huber, Yu, Jie   +13 more
core   +1 more source

The Global Asteroseismology Project Proof of Concept: Asteroseismology of Massive Stars with Continuous Ground-Based Observations

, 2023
Massive (>~ 8 solar masses) stars are the progenitors of many astrophysical systems, yet key aspects of their structure and evolution are poorly understood.
Shitrit, Noi, Arcavi, Iair
core  

The Global Asteroseismology Project Proof of Concept: Asteroseismology of Massive Stars with Continuous Ground-based Observations

Massive (≳8 M _⊙ ) stars are the progenitors of many astrophysical systems, yet key aspects of their structure and evolution are poorly understood. Asteroseismology has the potential to solve these open puzzles; however, sampling both the short period ...
Iair Arcavi, Noi Shitrit
core   +1 more source

Invited Talk - Observational aspects of asteroseismology

, 2006
We review past and present efforts to perform asteroseismic studies of the distant stars from an observational viewpoint. We discuss the challenges, problems and successes for the different kinds of pulsators that seem suitable for asteroseismology and ...
Handler, Gerald (Department of Astrophysics, Faculty of Earth Sciences, Geography and Astronomy, University of Vienna)
core   +1 more source

Simulations of Solar and Stellar Dynamos and Their Theoretical Interpretation. [PDF]

Space Sci Rev, 2023
Käpylä PJ, Browning MK, Brun AS, Guerrero G, Warnecke J.   +4 more
europepmc   +1 more source

An asteroseismology explorer

, 1986
In response to a NASA opportunity, a proposal has been made to study the concept of an Asteroseismology Explorer (ASE). The goal of the ASE would be to measure solar-like oscillations on many (perhaps hundreds) of stars during a 1-year mission, including
Brown, T. M., Cox, A. N.
core