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Search results for “Galaxy Clusters”

1,000+ results for "Galaxy Clusters"

Astronomers unveil the farthest galaxy

Researchers at Yale University and the University of California-Santa Cruz have detected an exceptionally luminous galaxy more than 13 billion years in the past, EGS-zs8-1. The galaxy is one of the brightest and most massive objects in the early universe, with a mass equivalent to over 15% of our Milky Way.

SourceYale University·JournalThe Astrophysical Journal Letters·DateMay 5, 2015

A silver lining

The study demonstrates the use of DNA nanotechnology to position arrays of hundreds of identical silver clusters with tunable fluorescent properties. This approach enables controlled assembly of photonic arrays, opening up new possibilities for sensing and imaging applications.

First signs of self-interacting dark matter?

Researchers observed four colliding galaxies and found a lag between dark matter and its associated galaxy, suggesting that dark matter interacts with forces other than gravity. This discovery could be the first evidence for rich physics in the dark sector, helping scientists better understand dark matter's nature.

SourceESO·JournalMonthly Notices of the Royal Astronomical Society·DateApr 14, 2015

How many gold atoms make gold metal?

Gold nanoclusters of 102 and 144 atoms show distinct behavior, with smaller clusters acting like giant molecules and larger ones exhibiting metallic properties. These findings have significant implications for developing bioimaging and sensing technologies based on metal-like clusters.

SourceAcademy of Finland·JournalACS Nano·DateApr 10, 2015

An explosive quartet

Astronomers spot four images of a distant supernova in a massive galaxy cluster, bending light due to gravitational lensing. The discovery provides insights into dark matter's distribution and helps refine estimates of its amount.

SourceESA/Hubble Information Centre·JournalScience·DateMar 5, 2015

Galactic 'rain' could be key to star formation

A team of astronomers has found that galactic 'rain' may be the key to understanding why some galaxies are more productive at creating stars than others. The researchers analyzed X-rays from over 200 galaxy clusters using NASA's Chandra X-ray Observatory and discovered that massive black holes can slow down gas that helps form stars.

SourceMichigan State University·JournalNature·DateMar 4, 2015

An old-looking galaxy in a young universe

A team of astronomers discovered a young and remote galaxy with dust levels similar to mature galaxies like the Milky Way, defying expectations. The galaxy, A1689-zD1, was observed using ALMA and VLT instruments and found to be emitting radiation in the far infrared, indicating significant star formation.

SourceESO·JournalNature·DateMar 2, 2015

NASA's Swift mission probes an exotic object: 'Kicked' black hole or mega star?

Researchers analyzing decades of observations detect an unusual source of light in a galaxy, with properties suggesting it could be a supermassive black hole ejected from its home galaxy. Alternatively, the object might have been a rare type of star known as a Luminous Blue Variable that underwent prolonged eruptions.

SourceNASA/Goddard Space Flight Center·JournalMonthly Notices of the Royal Astronomical Society·DateNov 19, 2014

New window on the early universe

Researchers at the University of Bonn and Cardiff develop a new observational strategy for imaging extremely distant galaxies, using ALMA radio telescope data. This method improves upon previous efforts by accurately estimating molecular hydrogen presence in these galaxies, providing insights into galaxy formation and star creation.

SourceUniversity of Bonn·JournalMonthly Notices of the Royal Astronomical Society·DateOct 22, 2014

Probing the past

Astronomers have combined traditional method with reverse engineering to improve accuracy in measuring distant galaxies. They calculated a robust distance measurement using near-infrared and visible-light photos, estimating a redshift of 10 for the galaxy.

SourceESA/Hubble Information Centre·JournalThe Astrophysical Journal Letters·DateOct 16, 2014

'Superglue' for the atmosphere

Researchers at Goethe University Frankfurt found that dimethylamine can greatly enhance the formation of aerosol particles from sulfuric acid, creating 'neutral molecular cluster' formations. This process could influence Earth's climate by affecting cloud condensation nuclei and precipitation patterns.

SourceGoethe University Frankfurt·JournalProceedings of the National Academy of Sciences·DateOct 9, 2014

Carbon monoxide predicts 'red and dead' future of gas guzzler galaxy

Astronomers have discovered that ALESS65 galaxy is running out of gas at an alarming rate, with only tens of millions of years left, much faster than the Milky Way's 5 billion years. The team found similar characteristics to nearby 'starbursting' galaxies in terms of UV radiation, suggesting a unique star formation process.

SourceInternational Centre for Radio Astronomy Research·JournalMonthly Notices of the Royal Astronomical Society·DateJul 8, 2014

Map of universe questioned; dwarf galaxies don't fit standard model

A new study questions the accepted model of galaxy formation, suggesting that dwarf galaxies may have formed from another galaxy through a tidal interaction. The research criticizes three recent papers that found satellite galaxies to support the standard model, instead finding 'serious issues' with their methods.

SourceRochester Institute of Technology·JournalMonthly Notices of the Royal Astronomical Society·DateJun 11, 2014

Failed dwarf galaxy survives galactic collision thanks to full dark-matter jacket

Researchers believe a high-velocity hydrogen cloud, known as the Smith Cloud, contains and is wrapped in a substantial halo of dark matter, allowing it to survive a collision with the Milky Way. The discovery could provide insights into the formation of galaxies and the earliest star formation in our galaxy.

SourceNational Radio Astronomy Observatory·JournalMonthly Notices of the Royal Astronomical Society·DateMay 23, 2014

Nearest bright 'hypervelocity star' found

Astronomers have found the closest, second-brightest hypervelocity star, speeding at 1 million mph. The star probes the supermassive black hole at the galaxy's center and the halo of mysterious dark matter, providing insights into the galaxy's structure.

SourceUniversity of Utah·JournalThe Astrophysical Journal Letters·DateMay 6, 2014