Results 61 to 70 of about 962,797 (273)
Accelerating the Fast Radio Burst Search: Data Set and Methods
The Astrophysical Journal Supplement SeriesFast radio bursts (FRBs) are an extremely energetic cosmic phenomenon of short duration. Discovered only recently and with its origin still unknown, FRBs have already started to play a significant role in studying the distribution and evolution of matter
Xuerong Guo +13 more
doaj +1 more source
Astronomy Education Research Down Under [PDF]
, 2005 A review of research conducted in Australasia into students' concept development in astronomy identifies a number of learning difficulties pertinent to astronomy, such as the lack of prior knowledge, intuitive or naive beliefs, juxtaposition and frames ...
Ginns, Ian S. +3 more
core
Managing and visualising geochemical data for tephra correlation with the IntChron Integration Tool
Journal of Quaternary Science, EarlyView.ABSTRACT There is now a wealth of glass‐shard geochemical data for volcanic ash (tephra) layers from a wide range of volcanoes and eruptions, providing invaluable datasets for tephrochronology. However, compilation of published data to assess tephra correlations leads to large files and requires careful management.
Victoria C. Smith +5 more
wiley +1 more source
The Astronomical JournalThe Markarian Multiwavelength Data Center ( MMDC ) is a web-based tool designed for accessing and retrieving multiwavelength and multimessenger data from blazar observations.
N. Sahakyan +9 more
doaj +1 more source
Laser &Photonics Reviews, EarlyView.Chip‐based frequency combs are usually pumped from telecom wavelengths, far from the visible. This work instead pumps close to the visible with a Ti:sapphire laser ‐ the source behind the original optical frequency combs and now becoming chip‐integrable‐ and lets silicon‐nitride waveguides convert it into efficient, octave‐spanning visible‐to‐infrared ...
Abdullah Alabbadi +5 more
wiley +1 more source
Highlighting the history of French radio astronomy. 7. The genesis of the Institute of Radioastronomy at Millimeter wavelengths (IRAM) [PDF]
, 2011 Radio astronomy in France and in Germany started around 1950. France was then building interferometers and Germany large single dishes, so it was not unexpected that their first projects involving millimetre radio astronomy were respectively with an ...
Gómez-González, Jesús +5 more
core +1 more source
Ultimate Intrinsic SNR Depends on B0 Orientation
Magnetic Resonance in Medicine, EarlyView.ABSTRACT Purpose This work aims to investigate the effect of B0$$ {B}_0 $$ orientation on the uiSNR in MRI. Methods Electromagnetic simulations were performed on both realistic body models and simplified geometric models. Comparisons between (1) opposite B0$$ {B}_0 $$ directions along the head‐foot (HF) axis, corresponding to head‐first and feet‐first ...
Yuting Wang +4 more
wiley +1 more source
Asteroid Albedo and Size Inversion: A Deep Learning Method and Application Based on Multiparameters
The Astrophysical Journal Supplement SeriesOf nearly 1.5 million asteroids discovered to date, only about 5% have spectroscopic observations, resulting in limited physical property coverage. Multicolor photometry provides taxonomic classifications for the majority of asteroids.
Jiayi Ge +4 more
doaj +1 more source
Whole‐Brain Diffusion MRI at 7T With Universal Multiband GRAPE pTx Pulses
Magnetic Resonance in Medicine, EarlyView.Purpose To improve signal strength and homogeneity of whole‐brain diffusion‐weighted imaging (DWI) at 7T. Methods Universal multiband excitation and refocusing pulses were optimized with the gradient ascent pulse engineering (GRAPE) algorithm across a database of B1+$$ {B}_1^{+} $$ and B0$$ {B}_0 $$ maps obtained from 20 subjects.
Marten Laufenberg +5 more
wiley +1 more source
The Early Data Release of the Dark Energy Spectroscopic Instrument
The Astronomical JournalThe Dark Energy Spectroscopic Instrument (DESI) completed its 5 month Survey Validation in 2021 May. Spectra of stellar and extragalactic targets from Survey Validation constitute the first major data sample from the DESI survey. This paper describes the
DESI Collaboration +269 more
doaj +1 more source