Results 31 to 40 of about 157,868 (337)

Sources and Radiations of the Fermi Bubbles

open access: yesUniverse
Two enigmatic gamma-ray features in the galactic central region, known as Fermi Bubbles (FBs), were found from Fermi-LAT data. An energy release, (e.g., by tidal disruption events in the Galactic Center, GC), generates a cavity with a shock that expands ...
Vladimir A. Dogiel, Chung-Ming Ko
doaj   +1 more source

Simulation of the Motion of Stars Escaping from the Galactic Center

open access: yesOpen Astronomy, 2015
Motions of stars escaping from the Galactic center are simulated. It is shown that the Galactic bar reduces the initial velocity needed to escape from the Galaxy.
Shirokova K. S.
doaj   +1 more source

Magnetic substructure in the northern Fermi Bubble revealed by polarized WMAP emission

open access: yes, 2012
We report a correspondence between giant, polarized microwave structures emerging north from the Galactic plane near the Galactic center and a number of GeV gamma-ray features, including the eastern edge of the recently-discovered northern Fermi Bubble ...
Aharonian, Felix A.   +4 more
core   +1 more source

Evidence for GeV emission from the Galactic Center Fountain [PDF]

open access: yes, 1997
The region near the Galactic center may have experienced recurrent episodes of injection of energy in excess of $\sim$ 10$^{55}$ ergs due to repeated starbursts involving more than $\sim$ 10$^4$ supernovae.
Dixon, D. D.   +3 more
core   +3 more sources

The Galactic Center [PDF]

open access: yesHighlights of Astronomy, 1992
AbstractThe dynamic subject of the Galactic center is driven mostly by high-resolution imaging both in the continuum and in the spectral line modes in a number of wavelength regimes. An attempt has been made to give a short overview of recent observations in this region, as follows: 1) Unusual characteristics of the population of molecular and dust ...
openaire   +1 more source

Unlocking the Power of Quercetin‐Encapsulated Mesoporous Bioactive Glass Nanoparticles: A Multifunctional Approach to Bone Regeneration

open access: yesAdvanced Engineering Materials, EarlyView.
Mesoporous bioactive glass nanoparticles (MBGNs) are investigated for bone regeneration given their remarkable structural and functional properties. MBGNs are functionalized with Mn and Cu and incorporated with quercetin, a natural flavonoid exhibiting antioxidant, anti‐inflammatory, and antimicrobial properties.
Giovanni Lo Bello   +5 more
wiley   +1 more source

A Trigonometric Parallax of Sgr B2

open access: yes, 2009
We have measured the positions of water masers in Sgr B2, a massive star forming region in the Galactic center, relative to an extragalactic radio source with the Very Long Baseline Array.
A. Brunthaler   +22 more
core   +1 more source

A Search for Pulsars Towards the Galactic Center [PDF]

open access: yes, 2020
We present observations from two separate methods for observing the Galactic Center in an attempt to characterize its pulsar and neutron star populations.
Hetrick, Jacob W   +2 more
core   +1 more source

Unique Performance Considerations for Printable Organic Semiconductor and Perovskite Radiation Detectors: Toward Consensus on Best Practice Evaluation

open access: yesAdvanced Functional Materials, EarlyView.
A lack of standard approaches for testing and reporting the performance of metal halide perovskites and organic semiconductor radiation detectors has resulted in inconsistent interpretation of performance parameters, impeding progress in the field. This Perspective recommends key metrics and experimental details, which are suggested for reporting in ...
Jessie A. Posar   +8 more
wiley   +1 more source

Estimating the parameters of the Sgr A* black hole

open access: yes, 2010
The measurement of relativistic effects around the galactic center may allow in the near future to strongly constrain the parameters of the supermassive black hole likely present at the galactic center (Sgr A*).
A. A. Nucita   +39 more
core   +1 more source

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