Results 1 to 10 of about 153,202 (150)
Atomic Data Needs in Astrophysics: The Galactic Center “Scandium Mystery”
Atoms, 2020 Investigating the Galactic center offers unique insights into the buildup and history of our Galaxy and is a stepping stone to understand galaxies in a larger context.
Brian Thorsbro
doaj +3 more sources
Revelations in our own backyard: Chandra’s unique Galactic Center discoveries [PDF]
Proceedings of the National Academy of Sciences of the United States of America, 2010 Sera Markoff
exaly +2 more sources
The Astrophysical Journal Letters, 2023 Sgr A* is the variable electromagnetic source associated with accretion onto the Galactic center supermassive black hole. While the near-infrared (NIR) variability of Sgr A* was shown to be consistent over two decades, unprecedented activity in 2019 ...
Grant C. Weldon +12 more
doaj +1 more source
HCO+ Clouds in the SGR b2 Region [PDF]
Journal of Astronomy and Space Sciences, 2004 The HCO^+ 1--0 transition line was observed toward the Sgr B2 region in our Galactic center. We found that there exist two large-scale velocity structures of vlsr ˜50 and ˜100 km/s, which are thought to interact with each other.
Y. C. Minh
doaj +1 more source
A GeV-TeV particle component and the barrier of cosmic-ray sea in the Central Molecular Zone
Nature Communications, 2021 Galactic center is one of the most important cosmic-ray sources. Here, the authors show GeV-TeV cosmic ray density in the central molecular zone is lower than the cosmic ray sea component, suggesting presence of high energy particle accelerator at the ...
Xiaoyuan Huang, Qiang Yuan, Yi-Zhong Fan
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The Far Side of the Galactic Bar/Bulge Revealed through Semi-regular Variables
The Astronomical Journal, 2023 The Galactic bulge is critical to our understanding of the Milky Way. However, due to the lack of reliable stellar distances, the structure and kinematics of the bulge/bar beyond the Galactic center have remained largely unexplored.
Daniel R. Hey +10 more
doaj +1 more source
The origin of IRS 16: dynamically driven inspiral of a dense star cluster to the Galactic center? [PDF]
, 2003 We use direct N-body simulations to study the inspiral and internal evolution of dense star clusters near the Galactic center. These clusters sink toward the center due to dynamical friction with the stellar background, and may go into core collapse ...
Gerhard, Ortwin +2 more
core +8 more sources
How many young star clusters exist in the Galactic center? [PDF]
, 2000 We study the evolution and observability of young compact star clusters within about 200pc of the Galactic center. Calculations are performed using direct N-body integration on the GRAPE-4, including the effects of both stellar and binary evolution and ...
Dutra C. M. +8 more
core +3 more sources
The Galactic Center Region Imaged by VERITAS from 2010{2012
Acta Polytechnica CTU Proceedings, 2014 The galactic center has long been a region of interest for high-energy and very-high-energy observations. Many potential sources of GeV/TeV gamma-ray emission are located in this region, e.g.
Matthias Beilicke
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HOCO+ toward the Galactic Center [PDF]
, 2006 We have identified a weak thermal line U42.767, which has been detected only in the directions toward Sgr A and Sgr B2, as the HOCO+ 2_{02}--1_{01} transition.
Deguchi, Shuji +2 more
core +2 more sources