Results 91 to 100 of about 272,836 (286)

M17 MIR: A Massive Star Is Forming via Episodic Mass Accretion

open access: yesThe Astrophysical Journal Letters
We analyzed the Atacama Large Millimeter/submillimeter Array (ALMA) band 6 data for the outbursting massive protostar M17 MIR. The ALMA CO J = 2–1 data reveal a collimated and bipolar north–south outflow from M17 MIR.
Wei Zhou   +4 more
doaj   +1 more source

Relativistic Jets with Stellar Wind Entrainment [PDF]

open access: yesSymposium - International Astronomical Union, 1994
Observations suggest that the flow speeds in extragalactic radio jets are relativistic on parsec scales. This evidence includes rapid variability, brightness temperatures in excess of the inverse Compton limit and even the motion of individual features with apparent superluminal velocities. In contrast, FR–1 flow speeds appear to be non–relativistic on
openaire   +1 more source

Tailoring Light Management in All‐Perovskite Tandem Solar Cells: The Impact of Nanotextures

open access: yesAdvanced Functional Materials, EarlyView.
To further improve the power conversion efficiency of all‐perovskite tandem solar cells, light management strategies need to be implemented. Front‐sided nanotextures reduce reflection losses, which boosts light absorption, thus increasing the tandem JSC, which is further supported by reducing parasitic absorption.
Sebastian Berwig   +21 more
wiley   +1 more source

JWST/NIRCam Imaging of the Bipolar Planetary Nebula NGC 6537: The (Infra)red Spider, Revealed

open access: yesThe Astrophysical Journal
We present James Webb Space Telescope (JWST) Near-Infrared Camera (NIRCam) Br α , H _2 , [Fe ii ], and polycyclic aromatic hydrocarbon (PAH) imaging of the molecule-rich, high-excitation bipolar planetary nebula (PN) NGC 6537 (the Red Spider ...
Joel H. Kastner   +7 more
doaj   +1 more source

Emerging Post‐CMOS Hardware Neurons for Brain‐Inspired Computing: Devices, Circuits, and System Integration

open access: yesAdvanced Functional Materials, EarlyView.
The physical realization of artificial neurons is a critical challenge for energy‐efficient neuromorphic computing. This review presents a comprehensive analysis of the evolution of artificial neuron implementations from conventional CMOS to emerging post‐CMOS technologies.
Kannan Udaya Mohanan   +4 more
wiley   +1 more source

M-dwarf stellar winds : the effects of realistic magnetic geometry on rotational evolution and planets [PDF]

open access: yes, 2014
AAV acknowledges support from a Royal Astronomical Society Fellowship. JM acknowledges support from a fellowship of the Alexander von Humboldt foundation.We perform three-dimensional numerical simulations of stellar winds of early-M-dwarf stars.
Morin, J.   +11 more
core   +1 more source

Balance, gravity waves and jets in turbulent shallow water flows [PDF]

open access: yes, 2009
This thesis contains a thorough investigation of the properties of freely decaying turbulence in a rotating shallow water layer on a sphere. A large number of simulations, covering an extensive range of Froude and Rossby numbers, have been carried out ...
Shipton, Jemma
core   +2 more sources

Comparison of flow and dispersion properties of free and wall turbulent jets for source dynamics characterisation [PDF]

open access: yes, 2009
The objective of this paper is to provide an investigation, using large eddy simulations, into the dispersion of aircraft jets in co-flowing take-off conditions.
Aloysius, SS, Wrobel, LC
core   +2 more sources

Engineered Nanotopography to Modulate Growth and Signaling of Neuronal Networks

open access: yesAdvanced Functional Materials, EarlyView.
This study examines the interaction between neurons and nanoscale topographies on engineered substrates. Neurons cultured on nanowires, nanopillars and nanoneedles exhibit enhanced neurite outgrowth, form more organized neuronal circuits, and display improved synaptic connectivity, compared to flat substrates.
Hao Nguyen Tran   +8 more
wiley   +1 more source

Investigating the Nested Structure of the Outflow from the Low Luminosity Protostar IRAS 16253-2429 Using JWST and ALMA

open access: yesThe Astrophysical Journal
Understanding the earliest stage of star and planet formation requires detailed observations to address the connection and interplay between the accretion, outflow, and disk evolution.
Mayank Narang   +39 more
doaj   +1 more source

Home - About - Disclaimer - Privacy