March 28, 2024, 12:56:37 pm
Welcome,
Guest
. Please
login
or
register
.
1 Hour
1 Day
Forever
Login with username, password and session length
News
: 'Europe's oldest city' found in Cadiz
http://mathaba.net/rss/?x=566660
Home
Help
Arcade
Gallery
Links
Staff List
Calendar
Login
Register
Einstein's gravitational waves 'seen' from black holes
Atlantis Online
>
Forum
>
Science & Technology
>
Science, Physics & Technology
>
Einstein's gravitational waves 'seen' from black holes
Pages: [
1
]
Go Down
« previous
next »
Print
Author
Topic: Einstein's gravitational waves 'seen' from black holes (Read 464 times)
0 Members and 73 Guests are viewing this topic.
Raychel
Hero Member
Posts: 107
Einstein's gravitational waves 'seen' from black holes
«
on:
February 14, 2016, 10:04:23 pm »
Einstein's gravitational waves 'seen' from black holes
By Pallab Ghosh Science correspondent, BBC News
11 February 2016
From the section Science & Environment
Media captionPallab Ghosh explains the sound of the gravitational wave and a computer visualisation
Scientists are claiming a stunning discovery in their quest to fully understand gravity.
They have observed the warping of space-time generated by the collision of two black holes more than a billion light-years from Earth.
The international team says the first detection of these gravitational waves will usher in a new era for astronomy.
It is the culmination of decades of searching and could ultimately offer a window on the Big Bang.
The research, by the Ligo Collaboration, has been published today in the journal Physical Review Letters.The collaboration operates a number of labs around the world that fire lasers through long tunnels, trying to sense ripples in the fabric of space-time.
Gravitational waves: A triumph for big science
'Astonishing' waves: The numbers don't do them justice
Prof Norna Robertson: "We've finally done it"
WATCH: Five ways gravitational waves matter
The signals they detect are incredibly subtle and disturb the machines, known as interferometers, by just fractions of the width of an atom.
But this black hole merger was picked up almost simultaneously by two widely separated Ligo facilities in the US.
The merger radiated three times the mass of the sun in pure gravitational energy.
"We have detected gravitational waves," Prof David Reitze, executive director of the Ligo project, told journalists at a news conference in Washington DC.
"It's the first time the Universe has spoken to us through gravitational waves. Up until now, we've been deaf."
Report Spam
Logged
Raychel
Hero Member
Posts: 107
Re: Einstein's gravitational waves 'seen' from black holes
«
Reply #1
on:
February 14, 2016, 10:04:58 pm »
Ligo labs fire lasers through long tunnels, trying to sense ripples in the fabric of space-time
Prof Karsten Danzmann, from the Max Planck Institute for Gravitational Physics and Leibniz University in Hannover, Germany, is a European leader on the collaboration.
He said the detection was one of the most important developments in science since the discovery of the Higgs particle, and on a par with the determination of the structure of DNA.
"There is a Nobel Prize in it - there is no doubt," he told the BBC.
"It is the first ever direct detection of gravitational waves; it's the first ever direct detection of black holes and it is a confirmation of General Relativity because the property of these black holes agrees exactly with what Einstein predicted almost exactly 100 years ago."
Ripples in the fabric of space-time
Report Spam
Logged
Raychel
Hero Member
Posts: 107
Re: Einstein's gravitational waves 'seen' from black holes
«
Reply #2
on:
February 14, 2016, 10:05:25 pm »
Gravitational waves are prediction of the Theory of General Relativity
Their existence has been inferred by science but only now directly detected
They are ripples in the fabric of space and time produced by violent events
Accelerating masses will produce waves that propagate at the speed of light
Detectable sources ought to include merging black holes and neutron stars
Ligo fires lasers into long, L-shaped tunnels; the waves disturb the light
Detecting the waves opens up the Universe to completely new investigations
That view was reinforced by Prof Stephen Hawking, who is an expert on black holes. Speaking exclusively to BBC News, he said he believed that the detection marked a key moment in scientific history.
"Gravitational waves provide a completely new way at looking at the Universe. The ability to detect them has the potential to revolutionise astronomy. This discovery is the first detection of a black hole binary system and the first observation of black holes merging," he said.
Report Spam
Logged
Raychel
Hero Member
Posts: 107
Re: Einstein's gravitational waves 'seen' from black holes
«
Reply #3
on:
February 14, 2016, 10:05:40 pm »
"Apart from testing (Albert Einstein's theory of) General Relativity, we could hope to see black holes through the history of the Universe. We may even see relics of the very early Universe during the Big Bang at some of the most extreme energies possible."
Team member Prof Gabriela González, from Louisiana State University, said: "We have discovered gravitational waves from the merger of black holes. It's been a very long road, but this is just the beginning.
"Now that we have the detectors to see these systems, now that we know binary black holes are out there - we'll begin listening to the Universe. "
Report Spam
Logged
Raychel
Hero Member
Posts: 107
Re: Einstein's gravitational waves 'seen' from black holes
«
Reply #4
on:
February 14, 2016, 10:05:57 pm »
Report Spam
Logged
Raychel
Hero Member
Posts: 107
Re: Einstein's gravitational waves 'seen' from black holes
«
Reply #5
on:
February 14, 2016, 10:06:18 pm »
The Ligo laser interferometers in Hanford, in Washington, and Livingston, in Louisiana, were only recently refurbished and had just come back online when they sensed the signal from the collision. This occurred at 10.51 GMT on 14 September last year.
On a graph, the data looks like a symmetrical, wiggly line that gradually increases in height and then suddenly fades away.
"We found a beautiful signature of the merger of two black holes and it agrees exactly - fantastically - with the numerical solutions to Einstein equations... it looked too beautiful to be true," said Prof Danzmann.
Media captionProf Stephen Hawking: "This provides a completely new way of looking at the universe."
Prof Sheila Rowan, who is one of the lead UK researchers involved in the project, said that the first detection of gravitational waves was just the start of a "terrifically exciting" journey.
"The fact that we are sitting here on Earth feeling the actual fabric of the Universe stretch and compress slightly due to the merger of black holes that occurred just over a billion years ago - I think that's phenomenal. It's amazing that when we first turned on our detectors, the Universe was ready and waiting to say 'hello'," the Glasgow University scientist told the BBC.
Being able to detect gravitational waves enables astronomers finally to probe what they call "dark" Universe - the majority part of the cosmos that is invisible to the light telescopes in use today.
Report Spam
Logged
Raychel
Hero Member
Posts: 107
Re: Einstein's gravitational waves 'seen' from black holes
«
Reply #6
on:
February 14, 2016, 10:06:34 pm »
Perfect probe
Not only will they be able to investigate black holes and strange objects known as neutron stars (giant suns that have collapsed to the size of cities), they should also be able to "look" much deeper into the Universe - and thus farther back in time. It may even be possible eventually to sense the moment of the Big Bang.
"Gravitational waves go through everything. They are hardly affected by what they pass through, and that means that they are perfect messengers," said Prof Bernard Schutz, from Cardiff University, UK.
"The information carried on the gravitational wave is exactly the same as when the system sent it out; and that is unusual in astronomy. We can't see light from whole regions of our own galaxy because of the dust that is in the way, and we can't see the early part of the Big Bang because the Universe was opaque to light earlier than a certain time.
Report Spam
Logged
Raychel
Hero Member
Posts: 107
Re: Einstein's gravitational waves 'seen' from black holes
«
Reply #7
on:
February 14, 2016, 10:06:56 pm »
"With gravitational waves, we do expect eventually to see the Big Bang itself," he told the BBC.
In addition, the study of gravitational waves may ultimately help scientists in their quest to solve some of the biggest problems in physics, such as the unification of forces, linking quantum theory with gravity.
At the moment, General Relativity describes the cosmos on the largest scales tremendously well, but it is to quantum ideas that we resort when talking about the smallest interactions. Being able to study places in the Universe where gravity is really extreme, such as at black holes, may open a path to new, more complete thinking on these issues.
Report Spam
Logged
Raychel
Hero Member
Posts: 107
Re: Einstein's gravitational waves 'seen' from black holes
«
Reply #8
on:
February 14, 2016, 10:07:37 pm »
Report Spam
Logged
Raychel
Hero Member
Posts: 107
Re: Einstein's gravitational waves 'seen' from black holes
«
Reply #9
on:
February 14, 2016, 10:07:57 pm »
A laser is fed into the machine and its beam is split along two paths
The separate paths bounce back and forth between damped mirrors
Eventually, the two light parts are recombined and sent to a detector
Gravitational waves passing through the lab should disturb the set-up
Theory holds they should very subtly stretch and squeeze its space
This ought to show itself as a change in the lengths of the light arms (green)
The photodetector captures this signal in the recombined beam
Scientists have sought experimental evidence for gravitational waves for more than 40 years.
Einstein himself actually thought a detection might be beyond the reach of technology.
His theory of General Relativity suggests that objects such as stars and planets can warp space around them - in the same way that a billiard ball creates a dip when placed on a thin, stretched, rubber sheet.
Gravity is a consequence of that distortion - objects will be attracted to the warped space in the same way that a pea will fall in to the dip created by the billiard ball.
Inspirational moment
Einstein predicted that if the gravity in an area was changed suddenly - by an exploding star, say - waves of gravitational energy would ripple across the Universe at light-speed, stretching and squeezing space as they travelled.
Although a fantastically small effect, modern technology has now risen to the challenge.
Much of the R&D work for the Washington and Louisiana machines was done at Europe's smaller GEO600 interferometer in Hannover.
"I think it's phenomenal to be able to build an instrument capable of measuring [gravitational waves]," said Prof Rowan.
"It is hugely exciting for a whole generation of young people coming along, because these kinds of observations and this real pushing back of the frontiers is really what inspires a lot of young people to get into science and engineering."
Report Spam
Logged
Raychel
Hero Member
Posts: 107
Re: Einstein's gravitational waves 'seen' from black holes
«
Reply #10
on:
February 14, 2016, 10:08:25 pm »
Much of the R&D work necessary for the breakthrough was done at Europe's GEO600 laser interferometer
Report Spam
Logged
Raychel
Hero Member
Posts: 107
Re: Einstein's gravitational waves 'seen' from black holes
«
Reply #11
on:
February 14, 2016, 10:08:43 pm »
http://www.bbc.com/news/science-environment-35524440
Report Spam
Logged
Raychel
Hero Member
Posts: 107
Re: Einstein's gravitational waves 'seen' from black holes
«
Reply #12
on:
February 14, 2016, 10:08:58 pm »
Report Spam
Logged
Raychel
Hero Member
Posts: 107
Re: Einstein's gravitational waves 'seen' from black holes
«
Reply #13
on:
February 14, 2016, 10:09:46 pm »
The major discovery is likely to usher in a whole new era of astronomy over the next few decades.
Recent rumors about the first ever detection of gravitational waves have turned out to be true as scientists have today announced one of the most significant astronomical discoveries in years.
Researchers at the Advanced Laser Interferometer Gravitational-Wave Observatory (LIGO) have revealed that they have for the first time observed the warping of space-time generated by the collision of two black holes situated more than one billion light years from the Earth.
"We have detected gravitational waves," said LIGO executive director David Reitze. "It's the first time the Universe has spoken to us through gravitational waves. Up until now, we've been deaf."
First proposed by Albert Einstein as a consequence of his General Theory of Relativity back in 1916, gravitational waves are ripples in the fabric of space-time that carry energy across the universe.
"It is the first ever direct detection of gravitational waves; it's the first ever direct detection of black holes and it is a confirmation of General Relativity because the property of these black holes agrees exactly with what Einstein predicted almost exactly 100 years ago," said Prof Karsten Danzmann.
Report Spam
Logged
Raychel
Hero Member
Posts: 107
Re: Einstein's gravitational waves 'seen' from black holes
«
Reply #14
on:
February 14, 2016, 10:10:13 pm »
http://www.bbc.co.uk/news/science-environment-35524440
Report Spam
Logged
Pages: [
1
]
Go Up
Print
« previous
next »
Jump to:
Please select a destination:
-----------------------------
Atlantis Online - Messages
-----------------------------
=> Messages
=> Administrative Messages
=> Commemorating Dates in History
=> Alerts & Warnings
=> Upcoming Events, Releases & Ads
=> Television: Shows & Events
-----------------------------
the Coffee Shop
-----------------------------
=> the Coffee Shop
=> Atlantis: Polls & News
=> Poltical Alerts
=> Causes & Activism
-----------------------------
Videos, Documentaries & Online Movies
-----------------------------
=> Ancient History & Lost Civilizations
=> Ghosts, UFOs & the Esoteric
=> Music, Entertainment & the Arts
=> Conspiracies & Suppressed Knowledge
=> Documentary & Videos
-----------------------------
Ages of the Earth
-----------------------------
=> The Early Earth, Geology & Fossils
=> Dinosaurs
=> Catastrophes & Mass Extinctions
=> Ice Age
=> Humanity's Origins & Civilization's First Steps
-----------------------------
Mythology & Heroic Sagas of Culture & Myth
-----------------------------
=> Mythology
=> Greek Mythology
=> Arthurian Myth
=> Quest for King Arthur
-----------------------------
Atlantis
-----------------------------
=> Atlantis & the Atlantic Ocean
=> Atlantis: Theories & Speculation
=> Plato's Atlantis
=> the Scientific Atlantis
=> Geology & Atlantis
=> Atlantis & the New Age
=> Atlantis in the Media
-----------------------------
Satellite Discoveries & Alternate Archaeology
-----------------------------
=> Alternate Archaeology
=> Satellite Discoveries & Aerial Archaeology
=> the Bock Saga
-----------------------------
Maps, Explorers & Adventurers
-----------------------------
=> the Oceans
=> Islands
=> the Bahamas, Bermuda, Cuba & the West Indies
=> Explorers & Adventurers
=> Maps, Cartographers & Cartography
-----------------------------
Egypt & the Pyramids
-----------------------------
=> Gods of Egypt
=> Egypt & the Pyramids
=> the Giza Complex
=> the Dynasties of Egypt
=> Egypt: Latest Discoveries
-----------------------------
the Guanches, Basques, Berbers & Sea People
-----------------------------
=> Guanches, Basques & Berbers
=> Pirates, Phantom Islands & Stories of the Sea
=> the Sea People
-----------------------------
the Ancient World
-----------------------------
=> Neolithic Europe
=> Stonehenge & the Druids
=> the Library of Alexandria, Ancient Historians & Philosophers
=> Ancient Warfare
=> the Spartans
-----------------------------
the Dawn of Civilization
-----------------------------
=> Africa, the Cradle of Life
=> China & the Asian Empires
=> Eastern Mysticism, India, & the Ancient Far East
=> Zoroastrianism, Arabia & the Near East
=> the Sumerians
=> Ancient Asia Minor
=> Hawaii, Australia, Alaska & the Pacific Rim
-----------------------------
Ancient Mediterranean Cultures
-----------------------------
=> Minoan Crete
=> Phoenicians & Carthage
=> Mediterranean Islands
=> Israelities & the Kabbalah
=> Etruscans
=> Ancient Greece
=> Rome: Empire & Republic
-----------------------------
Ancient European Cultures
-----------------------------
=> The Picts & Celts
=> Ireland: History & Myths
=> Balkan History
=> Italy & Magna Graecia
=> the Vikings & Scandinavia
=> Germanic History
-----------------------------
Timelines of Ancient Europe
-----------------------------
=> History of Britain
=> Scotland: in History & Lore
=> Continental Europe: Past & Present
=> the Dark Ages
=> the Medieval World
=> The Renaissance
-----------------------------
the Ancient Americas
-----------------------------
=> the Ancient Americas
=> Peru: Mysteries & Prehistory
=> Mesoamerican & South American Cultures
===> Aztec
===> Incan
===> Olmec
===> Toltec & Teotihuacan
=> Mayan
=> Native American
=> Canada: Past & Present
-----------------------------
The Crusades, Templars & the Holy Grail
-----------------------------
=> the Crusades
=> the Knights Templar
=> The Holy Grail & Christian artifacts
=> The Sacred Feminine, the Cathars & Gnosticism
=> the Da Vinci Code
-----------------------------
Ancient Mysteries
-----------------------------
=> Philosophy
=> Ancient Mysteries
=> Lemuria, Mu & other sunken civilizations
=> Easter Island
=> Oak Island
-----------------------------
Archaeology & Anthropology
-----------------------------
=> Museums & Universities
=> Archaeology
=> Ancient Languages
=> Archaeological News
=> Underwater Archaeology
-----------------------------
Ancient Knowledge, Mysticism & Sacred Beliefs
-----------------------------
=> Ley Lines, Ancient Astronomy & Archeoastronomy
=> Prophecy, 2012, End Times & the End of the World
=> Sacred Symbols
=> The Ancient Arts: Astrology, Alchemy, the Tarot, Arcane Recondite Practices & the I Ching
-----------------------------
Search for the Sacred
-----------------------------
=> Angels & Angelology
=> Goddess Worship
=> Search for the Sacred
=> World Religions
=> the Urantia Book
=> Wicca, Witchcraft, Paganism & Ritual Magic
-----------------------------
Health & Healing
-----------------------------
=> Health, Healing & Medical News
=> Human Biology
=> Love & Relationships
=> Women's Studies
-----------------------------
Science & Technology
-----------------------------
=> Science, Physics & Technology
=> History of Science
=> Evolution vs. Intelligent Design
=> Human Genetics
-----------------------------
Earth Changes
-----------------------------
=> Earth Changes
=> Global Warming
=> Botany & Plant Life
===> Plants of the Americas that Changed the World
=> Antarctica & the Arctic
-----------------------------
Space
-----------------------------
=> NASA
=> Mars, the Red Planet
=> Life on Other Worlds
=> the Universe
=> Images from Space
-----------------------------
UFOs, Aliens & Future Science
-----------------------------
=> UFO's
=> Aliens & Alien Abduction
=> UFO Evidence & in the Media
=> Alternate History & Multiverses
=> Future Science
=> Time Travel
-----------------------------
the Occult
-----------------------------
=> Ghosts & Apparitions
=> Communicating with the Dead
=> Paranormal Events, Reincarnation & Near Death Experiences
=> the Enchanted World
=> the Supernatural
=> the Occult
-----------------------------
the Unexplained
-----------------------------
=> Cryptozoology
=> Bigfoot Sightings
=> the Unexplained
=> the Hollow Earth, Crop Circles, Strange Structures & Devices
=> Vanishings & Unsolved Murders
-----------------------------
Science Fiction & Fantasy
-----------------------------
=> Lord of the Rings
=> Science Fiction
=> King Kong, Gigantopithecus & the Mountain Gorilla
=> Godzilla, King of Monsters
=> Comic Books
===> Comic Book Creators
===> Videogames & Toys
-----------------------------
Halloween & Seasonal
-----------------------------
=> Halloween
=> Seasonal
=> Monsters of Myth, Movies & Folklore
=> Ghost Stories
=> the Zombie Apocalypse
-----------------------------
Genres of Film & Literature
-----------------------------
=> Universal Horror
=> H. P. Lovecraft
=> Horror
=> Dark Shadows
=> Twin Peaks
=> Online Horror Movies Sci-Fi & TV Series
-----------------------------
Arts & Literature
-----------------------------
=> Online Books & Research Papers
=> Classical Literature & Book Reviews
=> Art History
=> Architecture
=> Sculpture & Statuary
=> the Great Masters
=> Music
-----------------------------
Media & Film
-----------------------------
=> Cinema
=> the History of Film
=> Marilyn Monroe
=> Actresses & Models
=> Entertainment News
-----------------------------
Modern Historical Mysteries
-----------------------------
=> American History
===> Presidents of the United States
=> the World Wars
===> the Great Depression
=> the Holocaust
=> the Middle East: Past & Present
=> Modern History
===> the Industrial Age
===> Civil Rights
=> Great Cities of the World
=> the Kennedys: Their History & Assasinations
=> New York City: Then & Now
-----------------------------
September 11th, 2001
-----------------------------
=> September 11th: Conspiracies, Cover-ups & Remembrance
=> The World Trade Center Remembered
===> Life of the Twin Towers
=> Modern Warfare
=> Environmental Disasters & Mass Tragedies
-----------------------------
Suppressed Knowledge
-----------------------------
=> New World Order
=> Conspiracies
=> Suppressed Knowledge
=> Media Matters
-----------------------------
Politics
-----------------------------
=> the Barack Obama Administration
=> Conservatives, Trump, & Republican Politics
=> Joe Biden, Democratic Politics & News
=> Tea Party, Constitution, Libertarian Parties & Ron Paul
=> Politics & News
-----------------------------
Current Events
-----------------------------
=> Current Events & Odd Stories
=> The World Today
=> Financial News & the Economy
===> The History of Labor
=> Breaking News
-----------------------------
General Category
-----------------------------
=> Opinions & Editorials
=> Cartoons, Humor & Comic Strips
=> Ecology, Pets & the Animal Kingdom
=> General & Miscellaneous
=> Sports
=> Computers & the Internet
-----------------------------
Art, Graphics & Creative Writing
-----------------------------
=> Fantasy Art & Graphics
=> Creative Writing
===> Horror Fiction
=> Poetry
=> Photography & Models
=> Earth Images
-----------------------------
Past Events
-----------------------------
=> Case for Bush Impeachment/War Crimes
===> Bush Administration Torture Scandal
=> Campaign 2008
=> Atlantis Online - Memorial & Biography
===> Atlantis Online - Old Posts
Powered by
EzPortal
Loading...