Results 91 to 100 of about 35,587 (387)
Precession of timelike bound orbits in Kerr spacetime
European Physical Journal C: Particles and Fields, 2021 Astrometric observations of S-stars provide a unique opportunity to probe the nature of Sagittarius-A* (Sgr-A*). In view of this, it has become important to understand the nature and behavior of timelike bound trajectories of particles around a massive ...
Parth Bambhaniya +5 more
doaj +1 more source
Red Clump Stars in the Sagittarius Tidal Streams
, 2012 We have probed a section (l ~ 150, b ~ -60) of the trailing tidal arm of the Sagittarius dwarf spheroidal galaxy by identifying a sample of Red Clump stream stars.
Carrell, Kenneth +2 more
core +1 more source
Applied Economic Perspectives and Policy, EarlyView.Abstract This paper aims to describe the evolution of firm and industry strategies and to analyze detailed transaction data on the structure of the international grain trading industry. Specifically, data are developed from vessel nominations, and these were used to derive measures of concentration and determine how these change across selected ...
William W. Wilson +2 more
wiley +1 more source
The Variability of Sagittarius A* at Centimeter Wavelengths
The Astronomical Journal, 2004 We present the results of a 3.3-year project to monitor the flux density of Sagittarius A* at 2.0, 1.3, and 0.7 cm with the VLA. The fully calibrated light curves for Sgr A* at all three wavelengths are presented. Typical errors in the flux density are 6.1%, 6.2%, and 9.2% at 2.0, 1.3, and 0.7 cm, respectively.
Jun-Hui Zhao +3 more
openaire +4 more sources
Detection of faint stars near Sagittarius A* with GRAVITY [PDF]
Astronomy & Astrophysics, 2020 The spin of the supermassive black hole that resides at the Galactic Center can, in principle, be measured by accurate measurements of the orbits of stars that are much closer to Sgr A* than S2, the orbit of which recently provided the measurement of the
G. Collaboration +60 more
semanticscholar +1 more source
Agribusiness, EarlyView.Abstract The Russian invasion of Ukraine in February 2022 had profound consequences for the global economy. As both countries are major commodity exporters, the food value chain was also affected. This study investigates the impact of the invasion on stock prices, profitability and sentiments of agribusinesses along the food supply chain by using an ...
Julia Höhler +2 more
wiley +1 more source
The Astrophysical JournalWe develop a new method for studying the Galactic magnetic field along the spiral arms using pulsar Faraday rotation measures (RMs). Our new technique accounts for the dot-product nature of Faraday rotation and also splits the associated path integral ...
Alice P. Curtin +2 more
doaj +1 more source
Who Are the Consumers of European Farmers' Markets? A Cross‐Country Analysis
Agribusiness, EarlyView.ABSTRACT With substantial growth in the number of farmers' markets (FMs) in developed countries, the number of consumers visiting FMs is also increasing. This study comparatively assesses the consumers of FMs in three European countries where FMs traditionally play a distinctive role in food supply chains.
Áron Török +6 more
wiley +1 more source
The Multifrequency Behavior of Sagittarius A* [PDF]
Proceedings of XII Multifrequency Behaviour of High Energy Cosmic Sources Workshop — PoS(MULTIF2017), 2018 The Galactic Center is the closest galactic nucleus that allows us to determine the multi-frequency behavior of the supermassive black hole counterpart Sagittarius A* in great detail. We put SgrA*, as a nucleus with weak activity, into the context of nearby low luminosity nuclei.
Nastaran Fazeli +16 more
openaire +3 more sources
On the Structure of the Sagittarius Spiral Arm in the Inner Milky Way
The Astronomical JournalWe report measurements of trigonometric parallax and proper motion for two 6.7 GHz methanol and two 22 GHz water masers located in the far portion of the Sagittarius spiral arm as part of the BeSSeL Survey.
S. B. Bian +8 more
doaj +1 more source