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Green Bank Telescope Joins 'Breakthrough Listen' to Vastly Accelerate Search for Intelligent Life in the Universe
Green Bank Telescope Breakthrough Listen Vastly Accelerate Search Intelligent Life the Universe
2015/8/4
The National Science Foundation’s Green Bank Telescope (GBT) will join in the most powerful, comprehensive, and intensive scientific search ever for signs of intelligent life in the Universe. The inte...
New model of cosmic stickiness favors “Big Rip” demise of universe（图）
cosmic stickiness favors Big Rip demise of universe
2015/7/13
The universe can be a very sticky place, but just how sticky is a matter of debate.That is because for decades cosmologists have had trouble reconciling the classic notion of viscosity based on the la...
Dark matter is a scientific mystery. We can't see or touch it. But physicists like Dan McKinsey theorize it must exist because, without it, the universe would look quite different.With support from th...
A handful of new stars are born each year in the Milky Way, while many more blink on across the universe. But astronomers have observed that galaxies should be churning out millions more stars, based ...
“Assassin” Targets Supernovae in Our Neighborhood of the Universe（图）
Assassin Targets Supernovae Our Neighborhood the Universe
2015/1/20
The strategy is paying off. At the American Astronomical Society (AAS) meeting in Seattle this week, researchers reported early successes from the All-Sky Automated Survey for Supernova...
I highlight results from Chandr observations of nearby galaxies, including the Milky Way. These observations have offered insights into old mysteries and indications of new high energy astrophysical p...
The clustering dipole of the local universe from the Two Micron All Sky Survey
galaxies clusters
2014/12/24
The unprecedented sky coverage and photometric uniformity of the Two Micron All Sky Survey (2MASS) provides a rich resource for investigating the galaxies populating the local universe. A full charact...
Galaxy clustering and galaxy bias in a Lambda CDM universe
formation large-scale structure of universe
2014/12/24
We investigate galaxy clustering and the correlations between galaxies and mass in the ΛCDM cosmological model (inflationary cold dark matter with Ωm = 0.4, ΩΛ = 0.6, h = 0.65, n = 0.95, and σ8 = 0.8)...
Observations of the Gas Reservoir Around a Star Forming Galaxy In The Early Universe
general individual (A1689)
2014/12/23
We present a high signal-to-noise spectrum of a bright galaxy at z = 4.9 in 14 h of integration on VLT FORS2. This galaxy is extremely bright, i850 = 23:10 0:01, and is strongly-lensed by the foregr...
Galaxies in a simulated Lambda CDM Universe - I. Cold mode and hot cores
cooling fl ows feedback cluster
2014/12/23
We study the formation of galaxies in a large volume (50 h−1 Mpc, 2 × 2883 particles) cosmological simulation, evolved using the entropy and energy-conserving smoothed particle hydrodynamics (SP...
Galaxies in a simulated Lambda CDM universe - II. Observable properties and constraints on feedback
feedback cluster
2014/12/23
We compare the properties of galaxies that form in a cosmological simulation without strong feedback to observations of the z= 0 galaxy population. We confirm previous findings that models without str...
A Systematic Study of the Stellar Populations and ISM in Galaxies out to the Virgo Cluster: near field cosmology within a representative slice of the local universe
feedback near-fi eld cosmology
2014/12/22
We present a compelling case for a systematic and comprehensive study of the resolved and unresolved stellar populations, ISM, and immediate environments of galaxies throughout the local volume, defin...
OBSERVATIONS OF STARBURST GALAXIES WITH FAR-ULTRAVIOLET SPECTROGRAPHIC EXPLORER: GALACTIC FEEDBACK IN THE LOCAL UNIVERSE
starburst halos
2014/12/22
We have analyzed FUSE (905-1187 ? spectra of a sample of 16 local starburst galaxies. These galaxies cover almost three orders of magnitude in star-formation rates and over two orders of magnitude in ...
Dusty Star Formation in Extreme Environments: Galaxies and Galaxy Clusters in the Distant Universe
high-redshift galaxy clusters infrared environment Herschel
2014/12/9
In this thesis, we present a comprehensive study of the dust-obscured star formation (SF) activity in galaxy clusters out to high redshift using infrared (IR) imaging. Using hundreds of galaxy cluster...
Physicists closer to understanding balance of matter, antimatter in Universe（图）
Universe Physicists
2014/12/1
Physicists in Syracuse University’s College of Arts and Sciences have made important discoveries regarding Bs meson particles—something that may explain why the Universe contains more matter than anti...