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Physics/Materials Science - Astronomy
16.11.2017
Observatory in Mexico sheds light on origin of excess positrons in outer space
Observatory in Mexico sheds light on origin of excess positrons in outer space
Some scientists speculate these extra positrons have an exotic origin, such as yet-undetected processes involving dark matter. HAWC, with its wide field of view, measures the gamma rays made by the positrons as they move away from the pulsar. And we see the positrons are not moving fast enough to make it to Earth.
Physics/Materials Science - Astronomy
15.11.2017
Still no sign of dark matter
Still no sign of dark matter
Measurements at the Paul Scherrer Institute PSI further constrain theories about the nature of dark matter Experts are largely in agreement that a major portion of the mass in the universe consists of so-called dark matter. Its nature, however, remains completely obscure. One kind of hypothetical elementary particle that might make up the dark matter is the so-called axion.
Physics/Materials Science - Astronomy
15.11.2017
Hunt for dark matter is narrowed by new University of Sussex research
Hunt for dark matter is narrowed by new University of Sussex research
Hunt for dark matter is narrowed by new University of Sussex research Scientists at the University of Sussex have disproved the existence of a specific type of axion - an important candidate ‘dark matter' particle - across a wide range of its possible masses. The data were collected by an international consortium, the Neutron Electric Dipole Moment (nEDM) Collaboration, whose experiment is based at the Paul Scherrer Institut in Switzerland.
Astronomy - Environment/Sustainable Development
07.11.2017
First coast-to-coast land motion map of Scotland derived from satellite radar images
The first country-wide map of relative land motion has been created by a team at the University of Nottingham. Using hundreds of satellite radar images the team, working with Geomatic Ventures Limited (GVL), an innovative University spin-out company, created a complete map of mainland Scotland. The map covers a two-year period from 2015 to 2017 and was created using Intermittent Small Baseline (ISBAS) analysis, a novel satellite remote sensing technique.
Astronomy
06.11.2017
A "cosmic snake" reveals the structure of remote galaxies
Today, astronomers have a pretty accurate idea of how stars were formed in the recent cosmic past. But do these laws also apply to older galaxies' For around a decade, the Hubble telescope has been allowing astronomers to observe solar systems that are six or seven billion light years away. Hubble suggests that there are existing galaxies of nebulae and star clusters with a diameter of over 3000 light-years.
Astronomy
03.11.2017
Cold dust discovered around nearest star Proxima Centauri
Cold dust discovered around nearest star Proxima Centauri
Dust detected around the closest star to the solar system, Proxima Centauri, may indicate the presence of an elaborate planetary system. The observations, presented in Astrophysical Journal Letters, were made at The ALMA Observatory in Chile by researchers from the Instituto de Astrofísica de Andalucía (CSIC) and Queen Mary University of London (QMUL).
Astronomy
31.10.2017
’Monster’ planet discovery challenges formation theory
A giant planet - the existence of which previously thought extremely unlikely - discovered around a small star by an international collaboration of astronomers, with University of Warwick taking a leading role NGTS-1b is the largest planet compared to the size of its companion star ever discovered in universe - contradicts theories that a planet of this size could not be formed by such a small star Discovered using the state-of-the-art Next-Gene
Astronomy
26.10.2017
New evidence for dark matter makes it even more exotic
New evidence for dark matter makes it even more exotic
Looking at massive galaxy clusters, EPFL astronomers have observed that their brightest galaxies within them "wobble" - an unexpected phenomenon in current models. The discovery, published in MNRAS, adds to the body of evidence of dark matter beyond the Standard Cosmological Model (?CDM). Figure: Abell S1063, a galaxy cluster, was observed by the NASA/ESA Hubble Space Telescope as part of the Frontier Fields programme.
Astronomy - Earth Sciences
26.10.2017
Ocean sound waves may reveal location of incoming objects
Ocean sound waves may reveal location of incoming objects
The ocean can seem like an acoustically disorienting place, with muffled sounds from near and far blending together in a murky sea of noise. Now an MIT mathematician has found a way to cut through this aquatic cacaphony, to identify underwater sound waves generated by objects impacting the ocean's surface, such as debris from meteorites or aircraft.
Astronomy - Education/Continuing Education
23.10.2017
Formation of Magma Oceans on exoplanet
Formation of Magma Oceans on exoplanet
Induction heating can completely change the energy budget of an exoplanet and even melt its interior. In a study published by Nature Astronomy an international team led by the Space Research Institute of the Austrian Academy of Sciences with participation of the University of Vienna explains how magma oceans can form under the surface of exoplanets as a result of induction heating.
Astronomy
17.10.2017
In search of the ninth planet
In search of the ninth planet
ANN ARBOR-A University of Michigan doctoral student has logged two pieces of evidence that may support the existence of a planet that could be part of our solar system, beyond Neptune. Some astronomers think this alleged planet, called Planet Nine, exists because of the way some objects in space, called "Trans-Neptunian Objects," or TNOs, behave.
Astronomy - Physics/Materials Science
17.10.2017
Los Alamos researchers and supercomputers help interpret the latest LIGO findings
Los Alamos researchers and supercomputers help interpret the latest LIGO findings
It confirms Einstein's prediction that gravitational waves travel at the same speed as gamma rays: the speed of light. "As soon as I heard the news, I knew that understanding all of the implications would require input from a broad, multi-disciplinary set of scientists." - Chris Fryer Gravitational-wave observation confirms heavy-elements theory LOS ALAMOS, N.M., Oct.
Astronomy - Life Sciences
17.10.2017
Microbes leave
Microbes leave "fingerprints" on Martian rocks
Scientists around Tetyana Milojevic from the Faculty of Chemistry at the University of Vienna are in search of unique biosignatures, which are left on synthetic extraterrestrial minerals by microbial activity. The biochemist and astrobiologist investigates these signatures at her own miniaturized "Mars farm" where she can observe interactions between the archaeon Metallosphaera sedula and Mars-like rocks.
Astronomy - Physics/Materials Science
17.10.2017
Gravitational waves world-first discovery Down Under
A Sydney team was the first in the world to confirm radiowaves from the latest gravitational waves event, resulting from a spectacular neutron star merger that has produced light and radio waves as well as gravitational waves. An Australian group was the first in the world to confirm the radio emission from a gravitational wave event, discovered by collaborators in the United States being announced today.
Astronomy - Physics/Materials Science
16.10.2017
Integral sees blast travelling with gravitational waves
Integral sees blast travelling with gravitational waves
ESA's Integral satellite recently played a crucial role in discovering the flash of gamma rays linked to the gravitational waves released by the collision of two neutron stars. On 17 August, a burst of gamma rays lit up in space for almost two seconds. It was promptly recorded by Integral and NASA's Fermi satellite.
Astronomy - Physics/Materials Science
16.10.2017
Gravitational waves shed first light on mergers of neutron stars
This is a major breakthrough in more than one respect. The scientists of the LIGO-Virgo Collaboration (which includes the CNRS) have for the first time observed the gravitational waves emitted by the merger of two neutron stars, rather than of two black holes as in previous cases. In another first, the light emitted from the source of gravitational waves was observed in the following hours, days and weeks, by 70 other groundand space-based observatories.
Astronomy - Physics/Materials Science
16.10.2017
Gravitational waves detected for first time from two stars colliding
This discovery of neutron stars colliding is just the beginning. We want to one day look back to the beginning of time - just after the Big Bang, which we can't do with light. Scientists from ANU and around the world have detected for the first time ripples in space and time, known as gravitational waves, from the collision of two very dense stars, called neutron stars, about 130 million light years away.
Astronomy - Physics/Materials Science
16.10.2017
First detection of gravitational waves from colliding neutron stars
Scientists have for the first time directly observed gravitational waves, in addition to light, emitted from the spectacular collision of two neutron stars. The detection marks the first time that a cosmic event has been viewed in both gravitational waves and light. The gravitational wave signal, named GW170817, was detected at 1:41pm UK time on 17 August by two identical detectors in Washington and Louisiana and a third detector in Pisa, Italy.
Astronomy - Physics/Materials Science
16.10.2017
First detection of gravitational waves and light produced by colliding neutron stars
First detection of gravitational waves and light produced by colliding neutron stars
In a galaxy far away, two dead stars begin a final spiral into a massive collision. The resulting explosion unleashes a huge burst of energy, sending ripples across the very fabric of space. In the nuclear cauldron of the collision, atoms are ripped apart to form entirely new elements and scattered outward across the Universe.  What I am most excited about, personally, is a completely new way of measuring distances across the universe.
Astronomy - Physics/Materials Science
16.10.2017
Light captured alongside a gravitational wave for the first time ever
Light captured alongside a gravitational wave for the first time ever
University of Bath astrophysicists have been closely involved in the first ever combined detection of both light and gravitational waves from the merging of two neutron stars, a cataclysmic cosmic event. The findings, involving an international team of thousands using a global collection of gravitational wave detectors and groundand space-based astronomical telescopes, heralds a new era in modern astrophysics and help us understand the most powerful and violent events in the Universe.
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