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Seeing quadruple

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IMAGE: Four of the newfound quadruply imaged quasars are shown here: From top left and moving clockwise, the objects are: GraL J1537-3010 or Wolf s Paw; GraL J0659+1629 or Gemini s Crossbow; GraL.
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Credit: The GraL Collaboration
With the help of machine-learning techniques, a team of astronomers has discovered a dozen quasars that have been warped by a naturally occurring cosmic lens and split into four similar images. Quasars are extremely luminous cores of distant galaxies that are powered by supermassive black holes.
Over the past four decades, astronomers had found about 50 of these quadruply imaged quasars, or quads for short, which occur when the gravity of a massive galaxy that happens to sit in front of a quasar splits its single image into four. The latest study, which spanned only a year and a half, increases the number of known quads by about 25 percent and demonstrates the power of machine learning to assist ....

United States , George Djorgovski , Daniel Stern , Propulsion Laboratory , Swiss Army , European Space Agency Gaia , National Science Foundation , Technology Telescope , Paulo Research Foundation , European Southern Observatory New Technology Telescope , European Research Council , Jet Propulsion Laboratory , Astrophysical Journal , European Space Agency , Infrared Survey Explorer , Keck Observatory , Palomar Observatory , European Southern Observatory , New Technology Telescope , Gemini South , Dragon Kite , Machines Working , Centauru Victory , Alberto Krone Martins , Augmented Intelligence , Artificial Intelligence ,

Caltech: Seeing Quadruple

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Machine-learning methods lead to discovery of rare “quadruply imaged quasars” that can help solve cosmological puzzles
With the help of machine-learning techniques, a team of astronomers has discovered a dozen quasars that have been warped by a naturally occurring cosmic “lens” and split into four similar images. Quasars are extremely luminous cores of distant galaxies that are powered by supermassive black holes.
Over the past four decades, astronomers had found about 50 of these “quadruply imaged quasars,” or quads for short, which occur when the gravity of a massive galaxy that happens to sit in front of a quasar splits its single image into four. The latest study, which spanned only a year and a half, increases the number of known quads by about 25 percent and demonstrates the power of machine learning to assist astronomers in their search for these cosmic oddities. ....

United States , George Djorgovski , Daniel Stern , Swiss Army , Propulsion Laboratory , European Southern Observatory New Technology Telescope , European Space Agency Gaia , Technology Telescope , Jet Propulsion Laboratory , Astrophysical Journal , European Space Agency , Infrared Survey Explorer , Keck Observatory , Palomar Observatory , European Southern Observatory , New Technology Telescope , Gemini South , Dragon Kite , Machines Working , Centauru Victory , Alberto Krone Martins , Augmented Intelligence , Artificial Intelligence , ஒன்றுபட்டது மாநிலங்களில் , டேனியல் கடுமையான , சுவிஸ் இராணுவம் ,

Seeing Quadruple

Date Time
Seeing Quadruple
With the help of machine-learning techniques, a team of astronomers has discovered a dozen quasars that have been warped by a naturally occurring cosmic “lens” and split into four similar images. Quasars are extremely luminous cores of distant galaxies that are powered by supermassive black holes.
Over the past four decades, astronomers had found about 50 of these “quadruply imaged quasars,” or quads for short, which occur when the gravity of a massive galaxy that happens to sit in front of a quasar splits its single image into four. The latest study, which spanned only a year and a half, increases the number of known quads by about 25 percent and demonstrates the power of machine learning to assist astronomers in their search for these cosmic oddities. ....

United States , George Djorgovski , Daniel Stern , Propulsion Laboratory , Swiss Army , European Space Agency Gaia , National Science Foundation , Technology Telescope , Paulo Research Foundation , European Southern Observatory New Technology Telescope , European Research Council , Jet Propulsion Laboratory , Astrophysical Journal , European Space Agency , Infrared Survey Explorer , Keck Observatory , Palomar Observatory , European Southern Observatory , New Technology Telescope , Gemini South , Dragon Kite , Machines Working , Centauru Victory , Alberto Krone Martins , Augmented Intelligence , Artificial Intelligence ,

Pictures from space! Our image of the day

Pictures from space! Our image of the day
Space
16/02/2021
Space.com Staff
© Provided by Space
Valentine Island in northern Western Australia is a swirling mix of blues and reddish browns, as seen from space by the Copernicus Sentinel-2 mission. The mission, which is made up of two satellites, imaged the tiny island for Valentine s Day. Valentine Island is just about 1 mile (1.60 kilometers) long and 0.15 miles (250 meters) wide and can be found in the King Sound, a large gulf that has one of the highest tides in all of Australia.
Space can be a wondrous place, and we ve got the pictures to prove it! Take a look at our favorite pictures from space here, and if you re wondering what happened today in space history don t miss our On This Day in Space video show here! ....

New Zealand , Amazon River , Brazil General , Sagar Island , West Bengal , New York , United States , Banks Peninsula , New Zealand General , Nile Delta , Egypt General , San Francisco , Arkhangel Skaya Oblast , Long Island , Andaman And Nicobar Islands , Mount Sharp , World Trade Center , United Arab Emirates , French Guiana , Fripp Island , South Carolina , New Jersey , Launch Complex , Macedonia General , King Sound , Western Australia ,

Pictures from space! Our image of the day

Pictures from space! Our image of the day
Space
2/5/2021
Space.com Staff
© Provided by Space
The European Space Agency s Copernicus Sentinel-2 mission snapped this chilly photo of New York City on Feb. 4, 2021 showing the city blanketed in snow. This recent snow storm was classified as major and affected a majority of the Northeast United States, with New York declaring a state of emergency for both the immense snowfall and blistering winds. Copernicus Sentinel-2 is an Earth-observing mission made up of two satellites: Sentinel-2A and Sentinel-2B. The pair monitor and image our planet, orbiting it from space.
Space can be a wondrous place, and we ve got the pictures to prove it! Take a look at our favorite pictures from space here, and if you re wondering what happened today in space history don t miss our On This Day in Space video show here! ....

Amazon River , Brazil General , Sagar Island , West Bengal , New York , United States , Banks Peninsula , New Zealand General , New Zealand , Nile Delta , Egypt General , San Francisco , Arkhangel Skaya Oblast , Long Island , Andaman And Nicobar Islands , Mount Sharp , World Trade Center , United Arab Emirates , French Guiana , Fripp Island , South Carolina , New Jersey , Launch Complex , Macedonia General , Red Sea , Djibouti General ,