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    VIRGOCosmos In Brief - Aktualní novinky vesmírného výzkumu v kostce
    VIRGO
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    Bright daylight meteor recorded over Long Island, New York
    https://watchers.news/2017/10/19/new-york-daylight-meteor-long-island/

    Fireball footage viewed from Sea Girt NJ on October 18 2017 Meteor Space Debris entering atmosphere
    https://www.youtube.com/watch?v=Ka-STlR_1ow
    VIRGO
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    Přeposílám:

    Pozvánka na říjnovou Kosmoschůzku 2017

    místo konání: restaurace ZORTO http://www.zorto.cz/ (Nekázanka 6. Praha 1)
    datum akce: 25. 10. 2017
    začátek akce: 18:00
    předpokládaný konec akce: 21:00+

    Zajímavosti z kosmonautiky (červen - říjen 2017) -- Lubor Lejček

    Nové pulsarové planety? -- Julie Nováková

    První potvrzené exoplanety byly objeveny u milisekundového pulsaru - extrémně rychle rotující neutronové hvězdy.
    Později byly nalezeny dvě další v lecčem podobné, v lecčem velice odlišné soustavy. Na konci září byla možná po
    velmi dlouhé době objevena čtvrtá. Jsou pulsarové planety opravdu tak vzácné? Jak vznikají, co se o nich můžete
    dozvědět a co nám mohou říci o vzniku a vývoji planet obecně?

    Kde získat více informací?
    Více informací na webových stránkách Kosmo Klubu, o.s. (http://klub.kosmo.cz/novinky) nebo na e-mailu Kosmoschůzek
    (kosmoschuzky@kosmo.cz). Hlavním organizátorem akce je Petr Tomek - petrtomek98(c)gmail.com.

    Přidejte se k události také na Facebooku!
    https://www.facebook.com/events/637124170008821/
    VIRGO
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    Los Alamos researchers and supercomputers help interpret the latest LIGO findings
    http://www.lanl.gov/discover/news-release-archive/2017/October/1017-ligo-findings.php

    The theorists tweaked their models and, to their delight, the new LIGO data confirmed that heavy elements beyond iron were formed by
    the r-process (rapid process) in the neutron-star merger. The gravitational wave observation was having a major impact on theory.

    They also quickly noticed that, within seconds of the time of the gravitational waves, the Fermi spacecraft reported a burst of gamma
    rays from the same part of the sky. This is the first time that a gravitational wave source has been detected in any other way. It
    confirms Einstein’s prediction that gravitational waves travel at the same speed as gamma rays: the speed of light.

    VIRGO
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    https://www.facebook.com/NASAGoddard/videos/10156696111280898/

    Gravity has been making waves - literally. The 2017 Nobel Prize in Physics was awarded for the first direct detection of gravitational waves
    back in 2015. On Monday, October 16, astronomers announced another huge advance in the field of gravitational waves - for the first time,
    we’ve observed light and gravitational waves from the same source, showing exactly where gravitational waves originated.

    This Facebook Live goes deep inside this new era of astronomy. We’ll discuss how this event was detected by our NASA Fermi Gamma-ray Space
    Telescope, the National Science Foundation (NSF) Laser Interferometer Gravitational-Wave Observatory (LIGO) and the European Gravitational
    Observatory’s Virgo and review how many precious metals on Earth, like gold, are remnants of these collisions of neutron stars from millions
    of light-years away.
    VIRGO
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    Crews battle brush fire near Mount Wilson Observatory - Story | KTTV
    http://www.foxla.com/news/local-news/crews-battle-brush-fire-near-mount-wilson

    Firefighters worked Tuesday to extinguish a fire that scorched about 26 acres of brush after it broke out
    before dawn near the Mount Wilson Observatory in the Angeles National Forest northeast of Los Angeles.

    No injuries were reported and no structures have been threatened, the department reported. Deputies from
    the sheriff's Crescenta Valley Station helped evacuate Mount Wilson Observatory employees.

    VIRGO
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    Study shows how water could have flowed on ‘cold and icy’ ancient Mars | News from Brown
    http://news.brown.edu/articles/2017/10/icyhighlands

    Research by planetary scientists at Brown University finds that periodic melting of ice sheets on a cold
    early Mars would have created enough water to carve the ancient valleys and lakebeds seen on the planet today.
    VIRGO
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    Young star provides a glimpse of how planets are made | Cosmos
    https://cosmosmagazine.com/space/young-star-provides-a-glimpse-of-how-planets-are-made

    High powered telescopes aimed at a distant young hot star called V1247 Orionis have yielded
    some intriguing clues to one of astronomy’s most enduring mysteries: how planets form.

    The star – which is being monitored by the Atacama Large Millimetre Array (ALMA) telescope
    in Chile for – can be found in the background of Orion’s Belt. Like most young, hot stars,
    it is surrounded by a large disc of gas and dust.

    Astronomers believe that these discs are intimately bound up with the process of planet formation,
    but the mechanism is poorly understood.

    Dust existing at the outer edges of the disc is likely to drift away into space, while that in
    the inner regions has been shown to be subjected to drag from the surrounding gas. As a result,
    it tends to fall inwards into the star in a process known as “radial drift”.

    Now, however, a team led by Stefan Kraus from the University of Exeter in the UK has analysed data
    from ALMA and identified a large anomaly in the make-up of the disc.

    VIRGO
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    Is S0-2 a Binary Star?
    http://aasnova.org/2017/10/17/is-s0-2-a-binary-star/

    The most exciting discoveries in astronomy all have something in common: they let us marvel at the fact that nature obeys laws of physics.
    The star S0-2 is one of these exciting discoveries. S0-2 (also known as S2) is a fast-moving star that has been observed to follow a full
    elliptical, 16-year orbit around the Milky Way’s central supermassive black hole, precisely according to Kepler’s laws of planetary motion.
    Serving as a test-particle probe of the gravitational potential, S0-2 provides some of the best constraints on the black hole’s mass and
    distance yet. S0-2 is the brightest of the S-stars, a group of young main-sequence stars concentrated within the inner 1” (0.13 ly) of
    the nuclear star cluster.

    The next time S0-2 reaches its closest approach to the black hole, in 2018, there will exist a unique opportunity to detect a deviation from
    Keplerian motion — namely the relativistic redshift of S0-2’s radial (line-of-sight) velocity — in a direct measurement. In anticipation of
    this event, the authors of today’s paper investigate possible consequences of S0-2 being not a single star, but a spectroscopic binary, which
    would complicate this measurement.

    VIRGO
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    XCHAOS: Jasně, ale bylo na to uvaleno nejtvrdší informační embargo v letošním roce. I bonzák Krauss už ani nepíp... :))
    VIRGO
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    Microbes leave "fingerprints" on Martian rocks
    http://medienportal.univie.ac.at/...ailansicht/artikel/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. These microbes are capable of oxidizing and integrating metals into their metabolism. The original research was currently
    published in the journal "Frontiers in Microbiology".

    PANAAK
    PANAAK --- ---
    KATRIN is a German acronym (Karlsruhe Tritium Neutrino Experiment) for an undertaking to measure the mass of the electron antineutrino with sub-eV precision by examining the spectrum of electrons emitted from the beta decay of tritium. The core of the apparatus is a 200-ton spectrometer. In 2015, the commissioning measurements on this spectrometer were completed, successfully verifying its basic vacuum, transmission and background properties.[1] The experiment began running tests in October 2016, with measurements scheduled in 2017.[2]



    KATRIN - Wikipedia
    https://en.wikipedia.org/wiki/KATRIN

    // let's hunt those tiny bastards down with this little contraption!
    PANAAK
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    XCHAOS
    XCHAOS --- ---
    VIRGO: tohle je docela velký, podle všeho:
    Astronomers Strike Gravitational Gold In Colliding Neutron Stars - Slashdot
    https://science.slashdot.org/...206/astronomers-strike-gravitational-gold-in-colliding-neutron-stars
    A New Rosetta Stone for Astronomy - The Atlantic
    https://www.theatlantic.com/science/archive/2017/10/astronomers-have-seen-the-light/542907/

    ...ale nebyla o tom nějaká letmá zmínka už v tom srpnu?
    VIRGO
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    New Gravitational Wave Discovery (Press Conference and Online Q&A Session)
    https://www.youtube.com/watch?v=mtLPKYl4AHs
    VIRGO
    VIRGO --- ---
    ESO Telescopes Observe First Light from Gravitational Wave Source | ESO
    http://www.eso.org/public/news/eso1733/

    ESO’s fleet of telescopes in Chile have detected the first visible counterpart to a gravitational wave source.
    These historic observations suggest that this unique object is the result of the merger of two neutron stars.
    The cataclysmic aftermaths of this kind of merger — long-predicted events called kilonovae — disperse heavy
    elements such as gold and platinum throughout the Universe. This discovery, published in several papers in
    the journal Nature and elsewhere, also provides the strongest evidence yet that short-duration gamma-ray
    bursts are caused by mergers of neutron stars.

    ESOcast 133: ESO Telescopes Observe First Light from Gravitational Wave Source
    https://www.youtube.com/watch?v=WucRHOPTpD4
    VIRGO
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    https://www.nasa.gov/press-release/nasa-missions-catch-first-light-from-a-gravitational-wave-event

    For the first time, NASA scientists have detected light tied to a gravitational-wave event, thanks to two merging neutron stars in the galaxy
    NGC 4993, located about 130 million light-years from Earth in the constellation Hydra.

    Shortly after 8:41 a.m. EDT on Aug. 17, NASA's Fermi Gamma-ray Space Telescope picked up a pulse of high-energy light from a powerful explosion,
    which was immediately reported to astronomers around the globe as a short gamma-ray burst. The scientists at the National Science Foundation’s
    Laser Interferometer Gravitational-wave Observatory (LIGO) detected gravitational waves dubbed GW170817 from a pair of smashing stars tied to
    the gamma-ray burst, encouraging astronomers to look for the aftermath of the explosion. Shortly thereafter, the burst was detected as part of
    a follow-up analysis by ESA’s (European Space Agency’s) INTEGRAL satellite.

    NASA's Swift, Hubble, Chandra and Spitzer missions, along with dozens of ground-based observatories, including the NASA-funded Pan-STARRS survey,
    later captured the fading glow of the blast's expanding debris.

    VIRGO
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    VIRGO
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    The Remarkable Jet of the Quasar 4C+19.44su201739 | www.cfa.harvard.edu/
    https://www.cfa.harvard.edu/news/su201739

    Quasars are galaxies with massive black holes at their cores. So much energy is being radiated from near the nucleus of a quasar
    that it is much brighter than the rest of the entire galaxy. Much of that radiation is at radio wavelengths, produced by electrons
    ejected from the core at speeds very close to that of light, often in narrow, bipolar jets that are hundreds of thousands of light-
    years long. The fast-moving charged particles can also scatter photons of light, kicking them up in energy into the X-ray range.
    Even after more than two decades of study, however, there is still no clear conclusion as to the physical mechanism actually
    responsible for the X-ray emission. In more powerful quasars, it does appear that this scattering process dominates. In lower power
    jets, however, the emission characteristics suggest that the X-ray emission is dominated by magnetic field effects, not scattering.

    VIRGO
    VIRGO --- ---
    Astronomers See Light Show Associated With Gravitational Waves2017-30 | www.cfa.harvard.edu/
    https://www.cfa.harvard.edu/news/2017-30

    Marking the beginning of a new era in astrophysics, scientists have detected gravitational waves and electromagnetic radiation,
    or light, from the same event for the first time. This historic discovery reveals the merger of two neutron stars, the dense cores
    of dead stars, and resolves the debate about how the heaviest elements such as platinum and gold were created in the Universe.

    To achieve this remarkable result, thousands of scientists around the world have worked feverishly using data from telescopes on
    the ground and in space. Researchers at the Harvard-Smithsonian Center for Astrophysics (CfA) in Cambridge, Mass., have played
    a pivotal role. A series of eight papers led by CfA astronomers and their colleagues detail the complete story of the aftermath
    of this event and examine clues about its origin.

    VIRGO
    VIRGO --- ---
    A 3D step towards sorting out the Gamma-Ray Bursts zoo — English
    http://www.inaf.it/en/inaf-news/gold-grb

    A powerful tool for characterizing and classifying gamma-ray bursts (GRBs) to allow their use as tracers of the expansion
    history of the universe has recently been presented by an international team of researchers led by Dr. Maria Dainotti

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