Results 61 to 70 of about 1,537 (202)

Helioseismology: Probing the interior of a star [PDF]

open access: yesProceedings of the National Academy of Sciences, 1999
Helioseismology offers, for the first time, an opportunity to probe in detail the deep interior of a star (our Sun). The results will have a profound impact on our understanding not only of the solar interior, but also neutrino physics, stellar evolution theory, and stellar population studies in astrophysics.
P, Demarque, D B, Guenther
openaire   +2 more sources

Helioseismology

open access: yesAstrophysics and Space Sciences Transactions, 2008
Helioseismology, the study of solar oscillations, has proved to be an extremely powerful tool for the investigation of the internal structure and dynamics of the Sun. Here I will review the present status of helioseismic studies and comment on recent results and on prospects for future investigations to solve the most discussed open questions ...
openaire   +3 more sources

On the Technique of the Inversion of Helioseismological Data [PDF]

open access: yesSymposium - International Astronomical Union, 1988
The asymptotic inversion technique is developed, including independent determination of the sound speed profile and frequency dependence of the effective phase shift. Numerical results are presented.
M.A. Brodsky, S. V. Vorontsov
openaire   +1 more source

Time-Distance Helioseismology [PDF]

open access: yes, 2010
Time-distance helioseismology is a method of ambient noise imaging using the solar oscillations. The basic realization that led to time-distance helioseismology was that the temporal cross correlation of the signals at two 'surface' (or photospheric ...
Duvall, Thomas L., Jr.
core  

Helioseismology with long-range dark matter-baryon interactions [PDF]

open access: yes, 2014
Assuming the existence of a primordial asymmetry in the dark sector, we study how long-range dark matter (DM)-baryon interactions, induced by the kinetic mixing of a new U(1) gauge boson and a photon, affect the evolution of the Sun and, in turn, the ...
Lopes I., Panci P., Silk J.
core   +2 more sources

Solar Interior Rotation and its Variation

open access: yesLiving Reviews in Solar Physics, 2009
This article surveys the development of observational understanding of the interior rotation of the Sun and its temporal variation over approximately forty years, starting with the 1960s attempts to determine the solar core rotation from oblateness and ...
Howe Rachel
doaj  

Helioseismology

open access: yesReviews of Modern Physics, 2002
60 pages, 27 figures. Scheduled for publication in Rev. Mod. Phys., Oct. 2002. A larger gzipped postscript version, with higher-quality figures, is available at http://astro.ifa.au.dk/~jcd/papers/rmp01/text-13.ps ...
openaire   +3 more sources

HELAS Local Helioseismology Activities [PDF]

open access: yesCommunications in Asteroseismology, 2009
The main goals of the HELAS local helioseismology network activity are to consolidate this field of research in Europe, to organise scientific workshops, and to facilitate the distribution of observations and data analysis software. Most of this is currently accomplished via a dedicated website at http://www.mps.mpg.de/projects/seismo/NA4/ .
Schunker, Hannah, Gizon, Laurent
openaire   +4 more sources

Helioseismology, Asteroseismology, and MHD Connections

open access: yes, 2008
This volume presents a timely snapshot of the state of helio- and asteroseismology in the era when the SOHO/MDI instrument is about to be replaced by SDO/HMI and the CoRoT space mission is yielding its first long-duration light curves of thousands of ...
Gizon, Laurent   +5 more
core   +1 more source

Removal of Active Region Inflows Reveals a Weak Solar Cycle Scale Trend in the Near-surface Meridional Flow

open access: yesThe Astrophysical Journal, 2023
Using time–distance local helioseismology flow maps within 1 Mm of the solar photosphere, we detect inflows toward activity belts that contribute to solar-cycle scale variations in the near-surface meridional flow. These inflows stretch out as far as 30°
Sushant S. Mahajan   +2 more
doaj   +1 more source

Home - About - Disclaimer - Privacy