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Category/Subcategory: Natural Sciences/Astronomy

Recent developments in helioseismic analysis methods and solar data assimilation

Author: Markus Roth
We overview recent advances and results in enhancing and developing helioseismic analysis methods and in solar data assimilation. In the first part of this paper we will focus on selected developments in time-distance and global h ... more

Views: 491

Workshop Report: A New Synoptic Solar Observing Network

Author: Markus Roth
Since all space weather originates in and on the Sun, forecasters need continuous, long-term, consistent, and reliable solar data as a foundation for useful predictions. An effective strategy to obtain nearly continuous solar data ... more

Views: 554

GRAVITY near infrared multiple beams analysing system: software and characterization results

Author: Narsireddy Anugu
We report the status and the characterization results of the GRAVITY acquisition camera.

Views: 539

EXTENDED CARBON LINE EMISSION IN THE GALAXY: SEARCHING FOR DARK MOLECULAR GAS ALONG THE G328 SIGHTLINE

Author: Michael Burton
We present spectral data cubes of the [CI] 809 GHz, 12CO 115 GHz, 13CO 110 GHz, and HI 1.4 GHz line emission from a ∼1 square degree region along the l = 328 (G328) sightline in the Galactic Plane. Emission arises principally ... more

Views: 452

Validation of Spherical Born Approximation Sensitivity Functions for Measuring Deep Solar Meridional Flow

Author: Markus Roth
Accurate measurements of deep solar meridional flow are of vital interest for understanding the solar dynamo. In this paper, we validate a recently developed method for obtaining sensitivity functions (kernels) for travel-time mea ... more

Views: 186

Design, development and calibration of the GRAVITY acquisition camera software to monitor four telescope beams

Author: Narsireddy Anugu
We report the development of the GRAVITY acquisition camera software to monitor and analyse the four very large telescopes interferometer beams.

Views: 415

How-To MLT_4

Author: Monika Ellwarth
Short How-To about how to call the MLT_ 4 recognition code.

Views: 174

Design of a next generation synoptic solar observing network: solar physics research integrated network group (SPRING)

Author: Markus Roth
Long-term synoptic observations of the Sun in different wavelength regions are essential to understand its secular behavior. Such observations have proven very important for discovery of 11 year solar activity cycle, 22 year magne ... more

Views: 310

Stellar magnetic activity and variability of oscillation parameters - An investigation of 24 solar-like stars observed by Kepler

Author: René Kiefer
Context. The Sun and solar-like stars undergo activity cycles for which the underlying mechanisms are not well understood. The oscillations of the Sun are known to vary with its activity cycle and these changes provide diagnostics ... more

Views: 572

VARIATION OF ACOUSTIC CUTOFF PERIOD WITH HEIGHT IN THE SOLAR ATMOSPHERE: THEORY VERSUS OBSRVETIONS

Author: Aneta Wisniewska
Recently Wiśniewska et al. demonstrated observationally how the acoustic cutoff frequency varies with height in the solar atmosphere including the upper photosphere and the lower and middle chromosphere, and showed that the obser ... more

Views: 469