Results 81 to 90 of about 157,868 (337)

3D CMZ. III. Constraining the 3D Structure of the Central Molecular Zone via Molecular Line Emission and Absorption

The Astrophysical Journal
The Milky Way’s Central Molecular Zone (CMZ) is the largest concentration of dense molecular gas in the Galaxy, the structure of which is shaped by the complex interplay between Galactic-scale dynamics and extreme physical conditions.
Daniel L. Walker, Cara Battersby, Dani Lipman, Mattia C. Sormani, Adam Ginsburg, Simon C. O. Glover, Jonathan D. Henshaw, Steven N. Longmore, Ralf S. Klessen, Katharina Immer, Danya Alboslani, John Bally, Ashley Barnes, H Perry Hatchfield, Elisabeth A. C. Mills, Rowan Smith, Robin G. Tress, Qizhou Zhang   +17 more
doaj   +1 more source

Weighing the Milky Way

, 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, Ashby N, Ashfaque H Bokhari, Boyer R H, Dicke R M, Gron Ø, Hay H J, Krisher T P, Manasse F K, Martin J L, Moreau W, Munawar Karim, Ohanian H C, Synge J L, Taylor C T   +14 more
core   +1 more source

Impact of Lattice Heterogeneity on Broadband Optical Retardation in Stacked 2D Perovskite Single Crystals

Advanced Functional Materials, EarlyView.
It is shown that interfaces between organic and inorganic layers govern long‐range stacking disorder and in‐plane anisotropy in 2D metal‐halide perovskites. By comparing single‐cation AB‐AB and ordered mixed‐cation ABCD‐ABCD stackings, SCXRD reveals enhanced mosaicity, while optics confirm high birefringence.
Yixuan Dou, Nicholas Nici, Sunhao Liu, Xiaoming Wang, Yanfa Yan, Carla Slebodnick, Lina Quan   +6 more
wiley   +1 more source

Widespread Hot Molecular Gas Heated by Shear-induced Turbulence in the Galactic Center

The Astrophysical Journal
We observed NH _3 metastable inversion lines from (3, 3) to (18, 18) toward G0.66-0.13 in the Galactic center with the Shanghai Tianma 65 m radio telescope and Yebes 40 m telescope.
Juan Li, Junzhi Wang, Zhiqiang Shen, Alba Vidal-García, Yuqiang Li, Di Li, Liubin Pan, Lei Huang, Fengyao Zhu, Siqi Zheng, Yiping Ao, Alvaro Sanchez-Monge, Zhiyu Zhang, Xing Lu, Tie Liu, Xingwu Zheng   +15 more
doaj   +1 more source

Methanol Maser Emission from Galactic Center Sources with Excess 4.5 {\mu}m Emission

, 2011
We present a study of signatures of on-going star formation in a sample of protostellar objects with enhanced 4.5 {\mu}m emission ('green' sources) near the Galactic center.
Arendt, Bally, Beuther, Beuther, Caswell, Chambers, Cox, Cragg, Cyganowski, Cyganowski, D. Roberts, De Buizer, E. T. Chambers, Ellingsen, F. Yusef-Zadeh, Fazio, Foster, Huettemeister, Kurtz, Law, Lis, Lis, Liszt, Marston, Martín-Pintado, Muzerolle, Noriega-Crespo, Oka, Pierce-Price, Pratap, Ramírez, Rathborne, Rathborne, Rieke, Robitaille, Robitaille, Simon, Stolovy, Whitney, Whitney, Whitney, Yusef-Zadeh, Yusef-Zadeh   +42 more
core   +1 more source

The effect of dark matter on stars at the Galactic center: The paradox of youth problem [PDF]

, 2020
Ebrahim Hassani, Reza Pazhouhesh, Hossein Ebadi   +2 more
openalex   +1 more source

Geometry‐Dependent Adhesion in Transparent Monodomain Liquid Crystal Elastomers

Advanced Functional Materials, EarlyView.
Liquid Crystal Elastomers (LCEs) are emerging as exciting pressure‐sensitive adhesives. We examine adhesion in chemically identical elastomer films, exploring the influence of geometry (director orientation) and phase (nematic or isotropic). We demonstrate the potential of these aligned films as transparent, tunable, broad‐temperature‐range smart ...
Aidan Street, Devesh Mistry, Johan Mattsson, Helen F. Gleeson   +3 more
wiley   +1 more source

A Proposal for Enhancing Technosignature Search toward the Galactic Center

The Astrophysical Journal
We discuss the possibility of enhancing intelligent life searches toward the Galactic center. From the clockwork orbital motions of stars around the Sgr A* black hole, we can determine the distance to the Galactic center at an exceptional accuracy ...
Naoki Seto
doaj   +1 more source

Star Formation at the Galactic Center

, 2009
Molecular clouds at the Galactic center (GC) have environments considerably different from their disk counterparts. The GC may therefore provide important clues about how the environment affects star formation.
Fatuzzo, Marco, Melia, Fulvio
core   +1 more source

Multipurpose Transparent Nanocomposites for Gamma Spectroscopy, Pulse Shape Discrimination, Thermal Neutron Detection, Radiation Shielding, and High Refractive Index Applications

Advanced Functional Materials, EarlyView.
Materials exist that are useful for gamma scintillation, radiation shielding, neutron‐gamma pulse shape discrimination (PSD), thermal neutron detection, or high refractive index applications. While certain materials have exhibited optimal performance for each of these applications, none achieve multiple functions.
Isabelle Winardi, Stephane Miaule, Robert Carmichael, Bowen Sun, Ziqing Han, Prabhav Surabhi, Zhen Luo, Noelan Hum, David Prout, Yi‐An Chen, Ting‐Hsuan Wu, Hao Yu, Arion Chatziioannou, Qibing Pei   +13 more
wiley   +1 more source