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Category/Subcategory: Natural Sciences/Astronomy

Spicules and their on-disk counterparts - the main driver for solar chromospheric heating?

Author: Klaus Gerhard Puschmann
The question how the outer solar atmosphere is heated from solar photospheric temperatures of about 5800K up to solar chromospheric and coronal temperatures of about 20.000K and millions of degrees respectively, remained without a ... more

Views: 1046

Solar Physics Research Integrated Network Group Science Requirement Document

Author: Markus Roth
This document is deliverable D80.1 of the Solarnet Work Package 80. It is the Science Requirement Document for SPRING - a new network of ground-based observatories for synoptic observations of the sun. This document condesates ... more

Views: 833

The GREGOR Fabry‐Pérot Interferometer (GFPI) ‐ Technical Innovations and Results achieved in 2013

Author: Klaus Gerhard Puschmann
This paper shall provide a summary of not yet published technical innovations to the GREGOR Fabry-Pérot Interferometer (GFPI) at the 1.5m GREGOR Solar Telescope (Europe's largest solar telescope) that I implemented in 2013 as the ... more

Views: 1153

Global helioseismic evidence for a deeply penetrating Solar meridional flow consisting of multiple flow cells

Author: Markus Roth
We use a novel global helioseismic analysis method to infer the meridional flow in the deep Solar interior. The method is based on the perturbation of eigenfunctions of Solar p modes due to meridional flow. We apply this method ... more

Views: 754

AN UPDATE ON THE MOPRA SOUTHERN GALACTIC PLANE CO SURVEY

Author: Michael Burton
The 22 m diameter Mopra telescope in Australia is being used to undertake an improved survey of the CO J = 1{0 line at 3mm along the 4th quadrant of the Galaxy, achieving an order of magnitude better spatial and spectral resolut ... more

Views: 509

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: 499

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: 458

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: 478

A new cosmic coincidence in conjunction with the cosmic expansion.

Author: Christian Nutto
The discovery of the cosmic acceleration (Perlmutter & Riess, 1999; Perlmutter et al., 1999; Riess et al., 1998) along with the presence of dark matter is one of the most intriguing puzzles in modern physics and cosmology. Up to n ... more

Views: 439

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: 422