Tag Archive for 'Universe'

Physicists Catch Fourth Gravitational Wave: GW170814

Sep 28, 2017 by News Staff

The LIGO Scientific Collaboration and the Virgo Collaboration report the first joint detection of gravitational waves, ripples in the fabric of space and...

The star-forming dwarf galaxy J0811+4730 is a proxy for primordial galaxies. Image credit: University of Virginia.

Astronomers Find Record-Breaking Oxygen-Deficient Galaxy

Sep 26, 2017 by News Staff

The oxygen level in J0811+4730, a star-forming dwarf galaxy in the constellation Lynx, some 630 million light-years away, is the lowest yet discovered...

At the Pierre Auger Observatory in Argentina, cosmic rays have been detected from far off galaxies. Image credit: A. Chantelauze / S. Staffi / L. Bret / Pierre Auger Observatory.

Ultra-High-Energy Cosmic Rays Have Extragalactic Origins

Sep 22, 2017 by News Staff

For the first time, astrophysicists have confirmed that cosmic rays with ultra-high energies come from outside our Milky Way Galaxy. At the Pierre Auger...

Astronomers Measure Magnetic Field of Far-Off Galaxy

Aug 30, 2017 by News Staff

An international team of astronomers has measured the magnetic field of a star-forming galaxy nearly 4.6 billion light-years away. An image obtained using...

This artist’s conception illustrates one of the most primitive supermassive black holes known at the core of a young, star-rich galaxy. Image credit: NASA / JPL-Caltech.

Primordial Black Hole-Neutron Star Interactions May Have Helped to Forge Universe’s Heaviest Elements

Aug 7, 2017 by News Staff

In a paper to be published in the journal Physical Review Letters (arXiv.org preprint), Professor George Fuller of the University of California, San Diego,...

According to Angles-Alcazar et al, up to 50% of matter in the Milky Way Galaxy may have an extragalactic origin. Image credit: NASA / JPL.

Up To 50% of Milky Way’s Matter Have Extragalactic Origin, Astrophysicists Say

Jul 27, 2017 by News Staff

A team of researchers at Northwestern University and elsewhere has discovered that — contrary to previously standard lore — up to 50% of the...

Slice through the celestial equator showing the radial component of the velocity field (in km per second). Blue regions are falling towards us and red regions are flying away from us. Galaxies of the SDSS main galaxy sample are overplotted. In the center of the slice, the infalling dynamics of the Sloan Great Wall, one of the largest structure of the known Universe, can be observed. Image credit: Leclercq et al.

Researchers Release New Maps of Dark Matter Dynamics

Jul 26, 2017 by News Staff

An international team of scientists has unveiled detailed maps of dark matter dynamics in the nearby Universe. The research is published in the Journal...

This image of the superluminous supernova DES15E2mlf was taken with the Dark Energy Camera (DECam) gri-band filters mounted on the Blanco 4-m telescope at Cerro Tololo Inter-American Observatory in Chile on December 28, 2015, around the time when DES15E2mlf reached its peak luminosity. Image credit: D. Gerdes / S. Jouvel.

Astronomers Spot Most Distant Superluminous Supernova Yet

Jul 24, 2017 by News Staff

At a distance of 10 billion light-years, DES15E2mlf — a Type I superluminous supernova (SLSN-I) spotted by the Dark Energy Survey collaboration —...

Peering deep into the core of the Crab Nebula, this Hubble image reveals the beating heart of one of the most historic and intensively studied remnants of a supernova, an exploding star. The neutron star at the very center of the nebula has about the same mass as the Sun but compressed into an incredibly dense sphere that is only a few miles across. Spinning 30 times a second, the neutron star shoots out detectable beams of energy that make it look like it’s pulsating. The Hubble snapshot is centered on the region around the neutron star (the rightmost of the two bright stars near the center of this image) and the expanding, tattered, filamentary debris surrounding it. Hubble’s sharp view captures the intricate details of glowing gas, shown in red, that forms a swirling medley of cavities and filaments. Inside this shell is a ghostly blue glow that is radiation given off by electrons spiraling at nearly the speed of light in the powerful magnetic field around the crushed stellar core. This neutron star is a showcase for extreme physical processes and unimaginable cosmic violence. Bright wisps are moving outward from the neutron star at half the speed of light to form an expanding ring. It is thought that these wisps originate from a shock wave that turns the high-speed wind from the neutron star into extremely energetic particles. Image credit: NASA / ESA / J. Hester, ASU / M. Weisskopf, NASA & MSFC.

Astrophysical Shock Waves Generated in the Lab

Jul 18, 2017 by News Staff

A Princeton-led team of researchers has discovered a revolutionary way to generate high-energy shock waves in the lab. Peering deep into the core of the...

This artist’s illustration portrays what the gravitationally lensed galaxy SGAS 1110 might look like up close. A sea of young, blue stars is streaked with dark dust lanes and studded with bright pink patches that mark sites of star formation. SGAS 1110 is one of more than 70 studied as part of the Sloan Giant Arcs Survey, an imaging survey that searched 240 galaxy clusters to find new examples of gravitational lensing. Image credit: NASA / ESA / Z. Levay, STScI.

Hubble Finds Patches of Newborn Stars in Galaxy 11 Billion Light-Years from Earth

Jul 7, 2017 by News Staff

Astronomers using the NASA/ESA Hubble Space Telescope have captured a detailed image of an extremely distant, gravitationally lensed galaxy they believe...

$Gravitational waves observed by Laser Interferometer Gravitational-Wave Observatory (LIGO) twin detectors were produced during the final fraction of a second of the merger of two black holes to produce a single, more massive spinning black hole. Image credit: T. Pyle / LIGO.$

Signatures of Universe’s Extra Dimensions Could Be Hiding in Gravitational Waves

Jun 29, 2017 by News Staff

In a paper published in the Journal of Cosmology and Astroparticle Physics (arXiv.org preprint), German physicists investigate the effects due to Universe’s...

The giant elliptical galaxy in the center of this Hubble image is the most massive and brightest member of the galaxy cluster Abell 2261. Spanning a little more than one million light-years, the galaxy is about 10 times the diameter of the Milky Way Galaxy. Abell 2261 is located approximately 3 billion light-years away. Image credit: NASA / ESA / M. Postman, STScI / T. Lauer, NOAO / CLASH Team.

Brightest Cluster Galaxy Alignments Traced Back 10 Billion Years

Jun 13, 2017 by News Staff

A new study based on observations with the NASA/ESA Hubble Space Telescope has shown that so-called brightest cluster galaxies (BCGs) — the very...

This image portrays a simulation of the Universe. Each of the tiniest of the dots denotes an entire galaxy. Matter in the Universe is arrayed on a series of filaments that surround vast voids. Image credit: Max Planck Institute for Astrophysics.

Milky Way Galaxy Resides in Enormous Cosmic Void

Jun 9, 2017 by News Staff

A new study by the University of Wisconsin-Madison supports the idea that our Milky Way Galaxy and its neighbors exist in one of the holes, or voids, of...

Composite image of the Boomerang Nebula: ALMA observations (orange) showing the hourglass-shaped outflow, which is embedded inside a roughly round ultra-cold outflow; the hourglass outflow stretches more than 1.9 trillion miles from end to end, and is the result of a jet that is being fired by the central star, sweeping up the inner regions of the ultra-cold outflow like a snow-plow; the ultra-cold outflow is about 10 times bigger. The ALMA data are shown on top of an image from the NASA/ESA Hubble Space Telescope (blue). Image credit: ALMA / ESO / NAOJ / NRAO / NASA / ESA / Hubble / AUI / NSF.

ALMA Probes Boomerang Nebula, Universe’s Coldest Known Object

Jun 6, 2017 by News Staff

Astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA) may have solved the mystery of the coldest known object in the cosmos —...

An artist’s impression of a quasar and neighboring merging galaxy. The galaxies observed by Decarli et al are so distant that no detailed images are possible at present. This combination of images of nearby counterparts gives an impression of how they might look in more detail. Image credit: Max Planck Institute for Astronomy / NASA / ESA / Hubble.

Astronomers Discover New Kind of Galaxy: Rapidly Star-Forming Galaxies from Early Universe

May 25, 2017 by News Staff

Using the Atacama Large Millimeter/submillimeter Array (ALMA), astronomers have discovered a new kind of galaxy which, although very old — formed...

A simulated black hole of 10 solar masses as seen from a distance of 370 miles. Image credit: Ute Kraus, Universität Hildesheim / Axel Mellinger / CC BY-SA 2.5.

Naked Singularities Can Form in ‘Saddle-Shaped’ Universe, Physicists Say

May 23, 2017 by News Staff

A team of theoretical physicists at the University of Cambridge, UK, has used computer simulations to predict the existence of a so-called naked singularity,...

Hubble view of the galaxy cluster Abell 1689. Image credit: NASA / ESA / Hubble Heritage Team / STScI / AURA / J. Blakeslee, Dominion Astrophysical Observatory / H. Ford, JHU.

Space-Time is Constantly Moving, Physicists Say

May 15, 2017 by News Staff

A team of researchers from the Department of Physics and Astronomy at the University of British Columbia, Canada, has tackled the question ‘what causes...

With the final observation of the distant galaxy cluster Abell 370 -- approximately 6 billion light-years away -- the Frontier Fields program came to an end. Abell 370 is one of the very first galaxy clusters in which astronomers observed the phenomenon of gravitational lensing, the warping of spacetime by the cluster’s gravitational field that distorts the light from galaxies lying far behind it. This manifests as arcs and streaks in the picture, which are the stretched images of background galaxies. Image credit: NASA / ESA / Hubble / HST Frontier Fields.

Abell 370: Hubble Team Releases New ‘Frontier Fields’ Image

May 4, 2017 by News Staff

This new image from the NASA/ESA Hubble Space Telescope is one of the best ever views of the massive galaxy cluster Abell 370. The image (hi-res version)...

Map of the cosmic microwave background; the insets show the environment of the Cold Spot. The angular diameter of the vast supervoid aligned with the Cold Spot, which exceeds 30 degrees, is marked by the white circles. Image credit: ESA Planck Collaboration / Gergö Kránicz.

When Universes Collide: Galaxy Redshift Survey Hints at Exotic Origin for Mysterious ‘Cold Spot’

Apr 26, 2017 by News Staff

According to the results of a redshift survey of nearly 7,000 galaxies, a gigantic ‘hole’ in the Universe is unlikely to explain a ‘Cold Spot’...

Hubble’s view on iPTF16geu. Image credit: NASA / ESA / Hubble.

Hubble Spots Multiply-Imaged, Gravitationally Lensed Type Ia Supernova

Apr 21, 2017 by News Staff

The powerful vision of the NASA/ESA Hubble Space Telescope has allowed astronomers to analyze for the first time the multiple images of a gravitationally...

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