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    VIRGOCosmos In Brief - Aktualní novinky vesmírného výzkumu v kostce
    VIRGO
    VIRGO --- ---
    Woow!!

    A chat with Vít Kučera | ALICE Matters
    http://alicematters.web.cern.ch/?q=content%2Fnode%2F1048

    Vít Kučera has been recently awarded the 2016 ALICE thesis prize for his work on strange particle production in jets,
    which he carried out at the Charles University in Prague and the University of Strasbourg. Currently a postdoc with
    the Czech Academy of Sciences, he is continuing his research career in ALICE and is going to spend much time at CERN
    in the next years.

    When choosing his Master’s Course, he found himself hesitating between particle physics and astrophysics, since he was
    very fond of both fundamental physics and astronomy. Besides, he was a guide for an observatory. In the end, he decided
    to go for particle physics and, during his studies at the Charles University in Prague, he started a collaboration with
    ALICE. “I got very interested in heavy-ion physics, since in some way it combines my two interests: the origin of
    the universe on one side and subatomic physics on the other,” explains Vít.

    VIRGO
    VIRGO --- ---
    Astronomers Reveal Evidence of Dynamical Dark Energy
    http://www.newswise.com/articles/view/682133/?sc=rssn

    An international research team, including astronomers from the University of Portsmouth, has revealed evidence of dynamical dark energy.

    The discovery, recently published in the journal Nature Astronomy, found that the nature of dark energy may not be the cosmological constant
    introduced by Albert Einstein 100 years ago, which is crucial for the study of dark energy.

    Lead author of the study Professor Gong-Bo Zhao, from the Institute of Cosmology and Gravitation (ICG) at the University of Portsmouth and
    the National Astronomical Observatories of China (NAOC), said: “We are excited to see that current observations are able to probe the dynamics
    of dark energy at this level, and we hope that future observations will confirm what we see today.”

    VIRGO
    VIRGO --- ---
    Gravitational Wave Detectors Could Shed Light on Dark Matter - Ole Miss News
    https://news.olemiss.edu/gravitational-wave-detectors-shed-light-dark-matter/

    UM physicists part of international team announcing findings in Physical Review Letters

    A global team of scientists, including two University of Mississippi physicists, has found that the same instruments
    used in the historic discovery of gravitational waves caused by colliding black holes could help unlock the secrets
    of dark matter, a mysterious and as-yet-unobserved component of the universe.

    VIRGO
    VIRGO --- ---
    Meteorites may have brought building blocks of life to Earth | McMaster Daily News
    http://dailynews.mcmaster.ca/article/meteorites-may-have-brought-building-blocks-of-life-to-earth/

    Life on Earth began somewhere between 3.7 and 4.5 billion years ago, after meteorites splashed down and leached essential
    elements into warm little ponds, say scientists at McMaster University and the Max Planck Institute in Germany.

    Their calculations suggest that wet and dry cycles bonded basic molecular building blocks in the ponds’ nutrient-rich broth
    into self-replicating RNA molecules that constituted the first genetic code for life on the planet.
    VIRGO
    VIRGO --- ---
    Konečně!!

    BREAKING NEWS
    The Royal Swedish Academy of Sciences has decided to award the Nobel Prize in Physics 2017
    with one half to Rainer Weiss and the other half jointly to Barry C. Barish and Kip S. Thorne at LIGO/VIRGO COLLABORATION LIGO Scientific Collaboration
    “for decisive contributions to the LIGO detector and the observation of gravitational waves”.

    On 14 September 2015, the universe’s gravitational waves were observed for the very first time. The waves, which were predicted by Albert Einstein a hundred
    years ago, came from a collision between two black holes. It took 1.3 billion years for the waves to arrive at the LIGO detector in the USA.

    The signal was extremely weak when it reached Earth, but is already promising a revolution in astrophysics. Gravitational waves are an entirely new way of
    observing the most violent events in space and testing the limits of our knowledge.

    LIGO, the Laser Interferometer Gravitational-Wave Observatory, is a collaborative project with over one thousand researchers from more than twenty countries.
    Together, they have realised a vision that is almost fifty years old. The 2017 Nobel Laureates have, with their enthusiasm and determination, each been
    invaluable to the success of LIGO. Pioneers Rainer Weiss and Kip S. Thorne, together with Barry C. Barish, the scientist and leader who brought the project
    to completion, ensured that four decades of effort led to gravitational waves finally being observed.

    https://www.nobelprize.org/nobel_prizes/physics/laureates/2017/popular-physicsprize2017.pdf

    XCHAOS
    XCHAOS --- ---
    Unexpected surprise: A final image from Rosetta
    https://phys.org/news/2017-09-unexpected-image-rosetta.html
    Unexpected surprise: a final image from Rosetta / Rosetta / Space Science / Our Activities / ESA
    http://www.esa.int/...ctivities/Space_Science/Rosetta/Unexpected_surprise_a_final_image_from_Rosetta
    VINCENT_BU
    VINCENT_BU --- ---
    Russia And The US Will Work Together on The First-Ever Moon Station

    In Spring of 2017, NASA revealed their plans for what the massive Space Launch System (SLS) rocket would be used for: to build the Deep Space Gateway, a space station in cis-lunar orbit that'll serve as a stepping stone to the exploration of the Solar System.

    Until today, it was assumed that this would be a NASA project, with the agency constructing the station over the course of several launches of the SLS from 2021 through 2026, delivering the 4 major modules. The details were hazy, though, with the various components in development with various contractors.

    Today, however, NASA and the Russian Space Agency Roscosmos announced that they'll be building the Deep Space Gateway together. They signed an agreement in Australia at the 68th International Astronautical Congress in Adelaide, Australia, and announced the news to the world.

    Where Do We Go Next? Building the Deep Space Gateway
    https://www.youtube.com/watch?v=xFs1EzRb--Y
    323K13L
    323K13L --- ---
    Three-detector observation of #GravitationalWaves from #blackhole merger #GW170814 by @LIGO & @EGO_Virgo http://www.ligo.org/detections/
    #BravoVirgo

    VINCENT_BU
    VINCENT_BU --- ---
    South Pole Observatory Could Solve The Mystery of All Those Fast Radio Bursts

    Around the world, efforts are ramping up to try and uncover the mystery of fast radio bursts - extremely powerful, milliseconds-long radio bursts from somewhere out beyond the solar system. We don't know what they are. We don't even know where most of them are coming from, since the majority of sources only emit a burst once and fall silent. But the answer could lie with neutrinos - and that's where a telescope facility at the South Pole called IceCube comes into play.

    IceCube uses 5,160 optical modules to detect these tiny particles in the clear, dry, stable atmosphere of the South Pole, with an exceptionally wide field-of-view. When other radio telescopes detect an FRB, the IceCube team can cross-reference the radio data with their own data to check for elevated neutrino activity.

    In fact, they have already done so for nearly 30 FRBs, including 17 from FRB 121102, which is an anomalous FRB source that has emitted multiple bursts. The team found no unusual neutrino data, but that is not a null result. It helps narrow down what the FRBs are not.

    "We've ruled out gamma-ray bursts and we've strongly constrained the possibility of black holes," Vandenbroucke said.

    MARSHUS
    MARSHUS --- ---
    tak bohužel špatné zprávy :(

    Hurricane Damages Giant Radio Telescope—Why It Matters
    http://relay.nationalgeographic.com/...o-radio-telescope-damaged-puerto-rico-hurricane-maria-science
    VIRGO
    VIRGO --- ---
    Forming Planetesimals in a Dust and Gas Vortex
    http://aasnova.org/2017/09/19/forming-planetesimals-in-a-dust-and-gas-vortex/

    Planet formation still holds many mysteries for today’s astronomers. One of the biggest unknown is how pebbles and dust clump together to form planetesimals
    rather than drifting in towards the star due to its strong gravitational pull. A possible solution is dust traps — in a circumstellar disk, the inward drift
    of the pebbles and particles can be stopped by high pressure in the gaseous disk. A dust trap like this would be an ideal place to form planetesimals. The
    authors of today’s paper look at a circumstellar disks around AB Aur. They create hydrodynamical simulations of the dust and gas to see if there is a dust
    trap with the possible formation of small planets.

    Circumstellar disks are the link between bunches of dust around a star and fully formed planetesimals. There are a few types of circumstellar disks —
    protoplanetary, transition, and debris. A transition disk is exactly what it sounds like — a transition from protoplanetary to debris, which means that
    planets would likely be forming in a transition disk. About 450 light-years away from us, AB Aur hosts an asymmetric transition disk. The unevenness of ¨
    the disk could indicate a dust trap or gas vortex. At about 120 AU from the central star, the cold dust emission disk creates an asymmetric ring in the disk.

    VIRGO
    VIRGO --- ---
    Nanosat fleet proposed for voyage to 300 asteroids – Europlanet Outreach
    http://www.europlanet-eu.org/nanosat-fleet-proposed-to-300-asteroids/

    A fleet of tiny spacecraft could visit over 300 asteroids in just over three years, according to a mission study led by the Finnish Meteorological Institute.
    The Asteroid Touring Nanosat Fleet concept comprises 50 spacecraft propelled by innovative electric solar wind sails (E-sails) and equipped with instruments
    to take images and collect spectroscopic data on the composition of the asteroids. Each nanosat would visit six or seven asteroids before returning to Earth
    to deliver the data. The concept will be presented by Dr Pekka Janhunen at the European Planetary Science Congress 2017 in Riga on Tuesday 19th September.

    VIRGO
    VIRGO --- ---
    Expect the unexpected from the big-data boom in radio astronomy
    https://theconversation.com/expect-the-unexpected-from-the-big-data-boom-in-radio-astronomy-84059

    Radio astronomy is undergoing a major boost, with new technology gathering data on objects in our universe faster than astronomers can analyse.

    Expect the unexpected from the big-data boom in radio astronomy
    https://www.youtube.com/watch?v=VfDcTp5cqlI


    VIRGO
    VIRGO --- ---
    Size matters in the detection of exoplanet atmospheres – Europlanet Outreach
    http://www.europlanet-eu.org/size-matters-in-the-detection-of-exoplanet-atmospheres/

    A group-analysis of 30 exoplanets orbiting distant stars suggests that size, not mass, is a key factor
    in whether a planet’s atmosphere can be detected. The largest population-study of exoplanets to date
    successfully detected atmospheres around 16 ‘hot Jupiters’, and found that water vapour was present
    in every case.

    VIRGO
    VIRGO --- ---
    ESA Science & Technology: The cosmic water trail uncovered by Herschel
    http://sci.esa.int/herschel/59494-the-cosmic-water-trail-uncovered-by-herschel/

    ESA's Herschel Space Observatory, an extraordinary mission that was launched in 2009 and that observed the sky at far-infrared
    and sub-millimetre wavelengths for almost four years, took a comprehensive approach, tracing water from stars and planets in
    the forming across our Milky Way galaxy to planets and minor Solar System bodies in our own neck of the woods.

    Herschel: water
    https://www.youtube.com/watch?v=z0mpVrFYOMM
    VIRGO
    VIRGO --- ---
    New mirror-coating technology promises dramatic improvements in telescopes
    https://news.ucsc.edu/2017/09/mirror-coating.html

    Materials scientist Nobuhiko Kobayashi wasn't quite sure why the astronomer he met at a wine-tasting several years
    ago was so interested in his research, but as he learned more about telescope mirrors it began to make sense.

    VIRGO
    VIRGO --- ---
    VLASS:
    VLA Begins Huge Project of Cosmic Discovery – National Radio Astronomy Observatory
    https://public.nrao.edu/news/vla-begins-huge-project/

    Astronomers have embarked on the largest observing project in the more than four-decade history of the National Science Foundation’s
    Karl G. Jansky Very Large Array (VLA) — a huge survey of the sky that promises a rich scientific payoff over many years.

    Over the next 7 years, the iconic array of giant dish antennas in the high New Mexico desert will make three complete scans of the sky
    visible from its latitude — about 80 percent of the entire sky. The survey, called the VLA Sky Survey (VLASS), will produce the sharpest
    radio view ever made of such a large portion of the sky, and is expected to detect 10 million distinct radio-emitting celestial objects,
    about four times as many as are now known.

    VIRGO
    VIRGO --- ---
    Chandra :: Photo Album :: V745 Sco :: September 18, 2017
    http://chandra.harvard.edu/photo/2017/v745/

    A new 3D model of an explosion from the V745 Sco system is helping astronomers learn more about this volatile system.

    V745 Sco is a binary system where a red giant and a white dwarf star are in very close orbit around one another.

    A Quick Look at V745 Sco
    https://www.youtube.com/watch?v=MJZU15yg5cQ


    The intense gravitational forces from the white dwarf pull the outer layers of the red dwarf onto the smaller star’s surface, triggering explosions.

    Astronomers observed V745 Sco about two weeks after its most recent outburst in 2014 with Chandra, enabling them to generate this new 3D model.

    VIRGO
    VIRGO --- ---
    New quasar discovered by astronomers
    https://phys.org/news/2017-09-quasar-astronomers.html

    A team of astronomers led by Jacob M. Robertson of the Austin Peay State University in Clarksville, Tennessee has detected
    a new quasi-stellar object (QSO). They found the new quasar, designated SDSS J022155.26-064916.6, as a result of an analysis
    of available spectroscopic data. The finding is reported in a paper published Sept. 10 on the arXiv pre-print server.

    To date, astronomers have identified more than 200,000 quasars, most of them from the Sloan Digital Sky Survey (SDSS). SDSS
    is an imaging and spectroscopic redshift survey, which utilizes the 2.5-m wide-angle optical telescope at the Apache Point
    Observatory (APO) located in New Mexico. It is regarded as one of the most successful astronomical surveys, having produced
    the most detailed three-dimensional maps of the universe ever made.

    Now, a group of researchers led by Robertson reports the discovery of another quasar from the SDSS data. They found that the
    object known as SDSS J022155.26-064916.6, which was initially imaged by SDSS and classified as a star with a cosmic ray hit,
    is in fact a quasar at redshift of about 0.8.

    [1709.03166] Discovery of a New Quasar: SDSS J022155.26-064916.6
    https://arxiv.org/abs/1709.03166

    HERRICH
    HERRICH --- ---
    https://www.nasa.gov/feature/goddard/2017/hubble-captures-blistering-pitch-black-planet

    NASA's Hubble Space Telescope has observed a planet outside our solar system that looks as black as fresh asphalt because it eats light rather than reflecting it back into space. This light-eating prowess is due to the planet's unique capability to trap at least 94 percent of the visible starlight falling into its atmosphere.

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