Results 31 to 40 of about 3,761,627 (366)
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 Fermi Galactic Center GeV Excess and Implications for Dark Matter [PDF]
, 2017 The region around the Galactic center (GC) is now well established to be brighter at energies of a few GeV than expected from conventional models of diffuse gamma-ray emission and catalogs of known gamma-ray sources.
The Fermi-LAT Collaboration
semanticscholar +2 more sources
Discovery of an Unbound Hyper-Velocity Star in the Milky Way Halo [PDF]
, 2005 We have discovered a star, SDSS J090745.0+024507, leaving the Galaxy with a heliocentric radial velocity of +853+-12 km/s, the largest velocity ever observed in the Milky Way halo.
Blaauw A. +10 more
core +1 more source
The Fate of Binaries in the Galactic Center: The Mundane and the Exotic [PDF]
Astrophysical Journal, 2019 The Galactic center is dominated by the gravity of a super-massive black hole (SMBH), Sagittarius A*, and is suspected to contain a sizable population of binary stars.
A. Stephan +8 more
semanticscholar +1 more source
THE GALACTIC CENTER ENVIRONMENT [PDF]
Annual Review of Astronomy and Astrophysics, 1996 ▪ Abstract The central half kiloparsec region of our Galaxy harbors a variety of phenomena unique to the central environment. This review discusses the observed structure and activity of the interstellar medium in this region in terms of its inevitable inflow toward the center of the Galactic gravitational potential well.
Morris, Mark, Serabyn, Eugene
openaire +4 more sources
Kinematics of the Local Spiral Structure Revealed by Young Stars in Gaia DR3
The Astrophysical Journal Supplement Series, 2023 Using young open clusters and O–B2-type stars in Gaia Data Release 3, we investigate the kinematics of the local spiral structure. In general, the young sources in the outer spiral arms may present larger peculiar motions than those in the inner spiral ...
Dejian Liu +6 more
doaj +1 more source
X-ray Insight into High-Energy Processes in Extreme Galactic Nuclear Environment
Universe, 2022 Nuclear regions of galaxies apparently play a disproportionately large role in regulating their formation and evolution. How this regulation works, however, remains very uncertain.
Q. Daniel Wang
doaj +1 more source
Testing the Sensitivity of the Galactic Center Excess to the Point Source Mask.
Physical Review Letters, 2020 The Fermi Large Area Telescope (Fermi-LAT) Collaboration has an updated point source catalog, referred to as 4FGL. We perform the first template fit using a mask based on this new catalog and find that the excess in gamma rays detected at the Galactic ...
Yi-Ming Zhong +3 more
semanticscholar +1 more source
Revival of the Dark Matter Hypothesis for the Galactic Center Gamma-Ray Excess. [PDF]
Physical Review Letters, 2019 Statistical evidence has previously suggested that the galactic center GeV excess (GCE) originates largely from point sources, and not from annihilating dark matter.
R. K. Leane, T. Slatyer
semanticscholar +1 more source
Surveys Of The Galactic Center And The Nature Of The Galactic Center Lobe [PDF]
arXiv: Astrophysics, 2007 {"references": ["Afflerbach, A. Churchwell, E., Acord, J. M., Hofner, P., Kurtz, S., & Dupree, C. G. 1996, ApJS,", "106, 423", "Aharonian, F., et al. 2006, Nature, 439, 695", "Allmandola, L. J., Tielens, A. G. G. M., & Barker, J. R. 1989, ApJS, 71, 733", "Altenhoff, W. J., Downes, D., Pauls, T., & Schraml, J. 1979, A&AS, 35, 23", "Anish
openaire +3 more sources