The ScienceMedia Network
From scientists for scientists! - Now at your service.

Category/Subcategory: Natural Sciences/Physics

Magnetic Helicity as a Predictor of the Solar Cycle

Author: Gareth Hawkes
It is known that the poloidal field is at its maximum during solar minima, and that its behaviour during this time acts as a strong predictor of the strength of the following solar cycle. This relationship relies on the action of ... more

Views: 157

Validating Spherical Born Kernels for Meridional Flows

Author: Vincent Böning
We present the current status of an undergoing validation of a recently developed model for computing spherical Born approximation sensitivity functions for flows. In a first step, power spectra and reference cross-correlations fr ... more

Views: 279

Signatures of mode conversion in a sunspot simulation

Author: Damien Przybylski
Measurements made around active regions are complicated by magneto-acoustic mode-conversion and changes in the radiative properties of magnetic field concentrations. Forward modelling has been performed using the SPARC numerical c ... more

Views: 346

Ray dynamics of gravito-inertial modes in rotating stars

Author: Vincent Prat
Seismology of intermediate-mass and massive stars is limited by our lack of understanding of the effect of fast rotation on gravity modes. In particular, in this regime perturbative methods are unable to identify observed modes. ... more

Views: 353

An estimate of chromospheric heating by acoustic waves - reloaded

Author: Michal Sobotka
Several mechanisms may heat the solar chromosphere: acoustic waves, magnetoacoustic waves (slow, fast, and Alfven waves), and small-scale magnetic reconnections. Based on observations in the Ca II 854.2 nm line, the contribution o ... more

Views: 363

Extension to Spherical Geometry - Sensitivity Kernels for Flows in Time-Distance Helioseismology

Author: Vincent Böning
We extend an existing Born approximation model for calculating the linear sensitivity of helioseismic travel-times to flows from plane-parallel to spherical geometry. This extension is necessary especially for dealing with deep fl ... more

Views: 205

SPRING: A Proposal for Next Generation Synoptic Solar Instrumentation

Author: Sanjay gosain
Synoptic observations of the Sun are very important to understand the long term behavior of the solar activity cycle. Our current understanding solar magnetic cycle is rather in its infancy, as can be inferred from our very poor ... more

Views: 369

GONG Status

Author: Frank Hill
GONG (Global Oscillation Network Group) is now 20 years old and continues to reliably provide data for the international helioseismology community. In addition the role of GONG has expanded to provide data as input to a number of ... more

Views: 351

How to upload Conference Contributions

Author: Markus Roth
This is a short description on how to upload the conference contributions.

Views: 371

Mechanism of mean flow generation in rotating turbulence and its relation to inertial wave

Author: Kazuhiro INAGAKI
Recent numerical simulation revealed that large-scale flow is generated in a rotating system with inhomogeneous helicity. However its mechanism was not examined in terms of the Reynolds stress transport. In this study, the large-e ... more

Views: 50