Results 131 to 140 of about 3,773,384 (268)
, 2002 We describe an experiment to measure the mass of the Milky Way galaxy. The experiment is based on calculated light travel times along orthogonal directions in the Schwarzschild metric of the Galactic center. We show that the difference is proportional to
Angelo Tartaglia +14 more
core +1 more source
Mapping the Outcomes of Stellar Evolution in the Disks of Active Galactic Nuclei
The Astrophysical JournalThe disks of active galactic nuclei (AGNs) are expected to be populated by numerous stars, either formed in the outer regions of the disk via gravitational instability or captured from the nearby nuclear star cluster.
Gaia Fabj +4 more
doaj +1 more source
Apoastron Shift Constraints on Dark Matter Distribution at the Galactic Center
, 2007 The existence of dark matter (DM) at scales of few pc down to $\simeq 10^{-5}$ pc around the centers of galaxies and in particular in the Galactic Center region has been considered in the literature. Under the assumption that such a DM clump, principally
A. A. Nucita +9 more
core +1 more source
X-Rays from a Central “Exhaust Vent” of the Galactic Center Chimney
The Astrophysical Journal LettersUsing deep archival observations from the Chandra X-ray Observatory, we present an analysis of linear X-ray-emitting features located within the southern portion of the Galactic center chimney and oriented orthogonal to the Galactic plane, centered at ...
Scott C. Mackey +4 more
doaj +1 more source
Multi-Wavelength Observations and Modeling of Loop I
Galaxies, 2018 The article aims to overview the origin and current dynamical state of a giant structure on the northern galactic sky—the radio Loop I extending from ≈ − 45 ∘ to ≈ + 45 ∘ in longitudes and up to ≈ 80 ...
Yuri Shchekinov
doaj +1 more source
The luminosity of the Galactic center
The Astrophysical Journal, 1992 High signal-to-noise 50- and 90-micron continuum maps of the central 5 x 4 arcmin of the Galaxy made from observations on the Kuiper Airborne Observatory are presented. Dust and luminosity distribution models which are consistent with the data are presented.
Marshall Joy +6 more
openaire +2 more sources
The Core Mass Function across Galactic Environments. IV. The Galactic Center
The Astrophysical JournalThe origin of the stellar initial mass function (IMF) and how it may vary with galactic environment is a matter of debate. Certain star formation theories involve a close connection between the IMF and the core mass function (CMF), so it is important to ...
Alva V. I. Kinman +4 more
doaj +1 more source
A study of dipolar signal in distant Quasars with various observables
European Physical Journal C: Particles and FieldsWe study the signal of anisotropy in AGNs/quasars of CatWISE2020 catalogue using different observables. It has been reported earlier that this data shows a strong signal of dipole anisotropy in the source number counts.
Rahul Kothari +4 more
doaj +1 more source
EPJ Web of Conferences, 2017 Several independent analyzes of Fermi-LAT results found evidences of an excess of γ -ray diffuse emission along the inner Galactic plane and of a related spatial dependence of the cosmic ray (CR) proton spectral index.
Grasso D. +5 more
doaj +1 more source
Black Holes and the Supermassive Compact Object at the Galactic Center: Multi-arts of Thought and Nature. [PDF]
Innovation (Camb), 2020 Yu Q.
europepmc +1 more source