Results 31 to 40 of about 4,715,495 (301)

Improved Galactic diffuse emission model strengthens the case for a Millisecond Pulsar explanation of the Fermi GeV excess

open access: yesSciPost Physics Proceedings, 2023
After more than a decade since its discovery, the Galactic center gamma-ray excess - discovered with the Fermi Large Area Telescope - remains puzzling. While the spectrum of the signal can be explained by either dark matter or an unresolved population of
Oscar Macias, Martin Pohl, Chris Gordon, Phaedra Coleman
doaj   +1 more source

The Galactic Center in Color: Measuring Extinction with High-proper-motion Stars

open access: yesThe Astronomical Journal
The Milky Way’s central parsec is a highly extinguished region with a population of high-proper-motion stars. We have tracked 145 stars for ∼10 yr at wavelengths between 1 and 4 μ m to analyze extinction effects in color–magnitude space. Approximately 30%
Zoë Haggard   +8 more
doaj   +1 more source

Constraining the Stellar Mass Function in the Galactic Center via Mass Loss from Stellar Collisions

open access: yesAdvances in Astronomy, 2011
The dense concentration of stars and high-velocity dispersions in the Galactic center imply that stellar collisions frequently occur. Stellar collisions could therefore result in significant mass loss rates.
Douglas Rubin, Abraham Loeb
doaj   +1 more source

Neurochemical Endpoints to Inform Early‐Stage Trials of Spinocerebellar Ataxia 2 and 3 in a Multisite Setting

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Neurochemical levels measured by brain MR spectroscopy (MRS) have been proposed as endpoints for clinical trials in early‐stage spinocerebellar ataxia (SCA) trials. We tested their trial‐readiness by quantifying neurochemicals in three affected brain regions in early‐stage cohorts of SCA2 and SCA3, examining their reproducibility in ...
James M. Joers   +19 more
wiley   +1 more source

Heavy neutrino balls and the supermassive dark object at the Galactic center [PDF]

open access: yes, 1999
Includes bibliographical references.Massive neutrinos were the first proposed, and still remain the most natural, particle candidate for the dark matter.
Munyaneza, Faustin
core   +1 more source

Neutron stars in the galactic center

open access: yes, 2018
The Galactic Center is one of the most dense stellar environments in the Galaxy and is considered to be a plausible place to harbor many neutron stars.
Davies, Melvyn B., Kim, Chunglee
core   +2 more sources

A Lightweight Procedural Layer for Hybrid Experimental–Computational Workflows in Materials Science

open access: yesAdvanced Engineering Materials, EarlyView.
We unveil a prototype hybrid‐workflow framework that fuses automatedcomputation with hands‐on experiments. Built atop pyiron, a lightweight, parameterized layer translates procedure descriptions into executable manual steps, syncing instrument settings, human interventions, and data capture in real‐time today.
Steffen Brinckmann   +8 more
wiley   +1 more source

AST/RO Observations of Atomic Carbon near the Galactic Center

open access: yes, 2001
We present a coarsely sampled map of the region |l| ≤ 2°, |b| ≤ 0°1 in the 492 GHz (³P₁ → ³P₀) fine-structure transition of neutral carbon, observed with the Antarctic Submillimeter Telescope and Remote Observatory (AST/RO).
Lane, Adair P.   +8 more
core   +1 more source

Reconciling 3D Models for the Central 10 pc of the Milky Way

open access: yesThe Astrophysical Journal
The construction of an accurate 3D model of the Milky Way center is necessary to understand inflow processes that drive its overall evolution and to compare our Galactic nucleus to other galaxies’ nuclei.
Elisabeth A.C. Mills   +15 more
doaj   +1 more source

Toward Measuring the Microlensing Event Rate in the Galactic Center. I. Event Detection from the UKIRT Microlensing Survey Data

open access: yesThe Astrophysical Journal Supplement Series, 2023
To overcome the high optical extinction, near-infrared (NIR) observations are needed for probing the microlensing events toward the Galactic center. The 2015–2019 UKIRT microlensing survey toward the Galactic center is the first dedicated precursor NIR ...
Yongxin Wen, Weicheng Zang, Bo Ma
doaj   +1 more source

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