Results 41 to 50 of about 1,537 (202)
Photospheric high-frequency acoustic power excess in sunspot umbra: signature of magneto-acoustic modes [PDF]
, 2013 We present observational evidence for the presence of MHD (magnetohydrodynamic) waves in the solar photosphere deduced from SOHO/MDI (Solar and Heliospheric Observatory/Michelson Doppler Imager) Dopplergram velocity observations.
Shelyag, S. +14 more
core +2 more sources
A Spectral Solver for Solar Inertial Waves
The Astrophysical Journal Supplement Series, 2023 Inertial waves, which are predominantly driven by the Coriolis force, likely play an important role in solar dynamics, and, additionally, they provide a window into the solar subsurface.
Jishnu Bhattacharya, Shravan M. Hanasoge
doaj +1 more source
Inversions of Stellar Structure From Asteroseismic Data
Frontiers in Astronomy and Space Sciences, 2022 The advent of space-based photometry missions in the early 21st century enabled the application to asteroseismic data of advanced inference techniques until then restricted to the field of helioseismology.
Gaël Buldgen +6 more
doaj +1 more source
Ryugu reference project: Recommendations from the measurement definition team
Meteoritics &Planetary Science, Volume 61, Issue 5, Page 819-848, May 2026.Abstract Sample return missions play a significant role in planetary science by providing pristine extraterrestrial materials. JAXA's Hayabusa2 and NASA's OSIRIS‐REx missions have returned samples from the C‐type asteroids Ryugu and Bennu, respectively. The chemical and mineralogical compositions of these samples closely resemble those of CI chondrites,
Tetsuya Yokoyama +16 more
wiley +1 more source
Local Helioseismology Analyses with Hinode/SOT Datasets
, 2018 The solar internal structure and dynamics have been probed by examining the oscillations of the Sun, or by “listening to the Sun”; helioseismology provides us with unique tools for these analyses.
Nagashima, K., Kaori Nagashima
core +1 more source
Helioseismology and screening of nuclear reactions in the Sun
, 2001 We show that models for screening of nuclear reactions in the Sun can be tested by means of helioseismology. As well known, solar models using the weak screening factors are in agreement with data.
VILLANTE, FRANCESCO LORENZO +2 more
core +2 more sources
Towards inertial-mode helioseismology: Direct sensing of solar rotation at 75° latitude and 0.8 R⊙
Astronomy & AstrophysicsContext. Because solar global inertial modes are highly sensitive to differential rotation, they may provide new diagnostics of internal rotation at high latitudes, where acoustic-mode helioseismology provides only weak constraints. Aims.
Dey Prithwitosh +2 more
doaj +1 more source
Exploring the Dynamics of Near-Surface Solar Convection with Helioseismology [PDF]
, 2015 I present a new implementation of local helioseismology along with observations of near-surface solar convection made with this method. The upper 5% of the solar radius (35 Mm) is known as the Near-Surface Shear Layer (NSSL) and is characterized by ...
Greer, Benjamin J.
core +7 more sources
The Astrophysical Journal, 2023 Mapping the large-scale subsurface plasma flow profile within the Sun has been attempted using various methods for several decades. One such flow in particular is the meridional circulation, for which numerous studies have been published.
Aleczander Herczeg, Jason Jackiewicz
doaj +1 more source
Stellar Physics and General Relativity
Astronomische Nachrichten, Volume 346, Issue 3-4, March-May 2025.ABSTRACT The general theory of relativity is currently established as the most precise theory of gravity supported by observations, and its application is diverse ranging from astronomy to cosmology, while its application to astrophysics has been restricted only to compact stars due to the assumption that the Newtonian approximation is sufficient for ...
Shuichi Yokoyama
wiley +1 more source