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Twinkling Black Holes Reveal an Invisible Cloud in Our Galaxy


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At first, Yuanming Wang was not excited. More relieved, maybe. The first -year astrophysics PhD student at the University of Sydney sat in front of her computer, looking at images in which she’d found the signs of radio waves from distant galaxies twinkling, just as she had hoped. But because Wang’s discovery relied more on scouring ones and zeros than peering through a telescope and the discovery itself was just plain
weird it took awhile for the moment to hit.
Radio wave “twinkling,” known as scintillation, happens when the radio signals from sources like stars and black holes get interrupted as they stream toward Earth. Detecting scintillation from distant galaxies is very rare. Only a tiny fraction of the night sky will yield these signals, and most telescopes are unable to capture variations on such fast timescales. But Wang found hallmarks of scintillation from six galaxies at once. And ....

New South Wales , Tara Murphy , University Of Sydney , Milky Way , Black Holes , Radio Telescopes , புதியது தெற்கு வேல்ஸ் , தாரா மர்பி , பல்கலைக்கழகம் ஆஃப் சிட்னி , பால் வழி , கருப்பு துளைகள் , வானொலி தொலைநோக்கிகள் ,

New study suggests supermassive black holes could form from dark matter

A new theoretical study has proposed a novel mechanism for the creation of supermassive black holes from dark matter. The international team find that rather than the conventional formation scenarios involving normal matter, supermassive black holes could instead form directly from dark matter in high density regions in the centres of galaxies. The result has key implications for cosmology in the early Universe, and is published in ....

Monthly Notices Of The Royal Astronomical Society , Monthly Notices , Royal Astronomical , Big Bang , Universidad Nacional De La Plata , Milky Way , Space Planetary Science , மாதாந்திர அறிவிப்புகள் ஆஃப் தி அரச வானியல் சமூகம் , மாதாந்திர அறிவிப்புகள் , அரச வானியல் , பெரியது இடி , யுனிவர்சிடாட் நேஸீயநல் டி லா பிளாட்டா , பால் வழி , இடம் கிரகங்கள் அறிவியல் ,

Parker Solar Probe offers stunning view of Venus


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IMAGE: When flying past Venus in July 2020, Parker Solar Probe s WISPR instrument, short for Wide-field Imager for Parker Solar Probe, detected a bright rim around the edge of the planet.
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Credit: NASA/Johns Hopkins APL/Naval Research Laboratory/Guillermo Stenborg and Brendan Gallagher
NASA s Parker Solar Probe captured stunning views of Venus during its close flyby of the planet in July 2020.
Though Parker Solar Probe s focus is the Sun, Venus plays a critical role in the mission: The spacecraft whips by Venus a total of seven times over the course of its seven-year mission, using the planet s gravity to bend the spacecraft s orbit. These Venus gravity assists allow Parker Solar Probe to fly closer and closer to the Sun on its mission to study the dynamics of the solar wind close to its source. ....

United States , Brian Wood , Naval Research Laboratory , District Of Columbia , Goddard Space Flight Center , Javier Peralta , Angelos Vourlidas , Johns Hopkins , Us Naval Research Laboratory , Science Mission Directorate , Johns Hopkins Applied Physics Laboratory , Solar Probe , Parker Solar Probe , Wide Field Imager , Aphrodite Terra , Venus Orbiting Akatsuki , Research Laboratory , Mission Directorate , Space Planetary Science , Planets Moons , Satellite Missions Shuttles , Stars The Sun , ஒன்றுபட்டது மாநிலங்களில் , பிரையன் மரம் , கடற்படை ஆராய்ச்சி ஆய்வகம் , மாவட்டம் ஆஃப் கொலம்பியா ,

ET phones home!


Credit: Hebrew University
A team of researchers from the Hebrew University of Jerusalem (HUJI) led by Dr. Assaf Horesh have discovered the first evidence of radio flares emitted only long after a star is destroyed by a black hole. Published in the periodical
Nature Astronomy, the discovery relied upon ultra-powerful radio telescopes to study these catastrophic cosmic events in distant galaxies called Tidal Disruption Events (TDE). While researchers had known that these events cause the release of radio flares, this latest discovery saw those flares being emitted months or even years after the stellar disruption. The team was led by Dr. Horesh from the Racah Institute of Physics at the Hebrew together with the NASA Swift space telescope director Professor Brad Cenko and Dr. Iair Arcavi from Tel-Aviv University. ....

Israel General , Assaf Horesh , Brad Cenko , Racah Institute Of Physics , Hebrew University Of Jerusalem , Aviv University , Hebrew University , Nature Astronomy , Tidal Disruption Events , Racah Institute , Professor Brad Cenko , Iair Arcavi , Space Planetary Science , Planets Moons , Stars The Sun , இஸ்ரேல் ஜநரல் , ஹீப்ரு பல்கலைக்கழகம் ஆஃப் ஏருசலேம் , அவிவ் பல்கலைக்கழகம் , ஹீப்ரு பல்கலைக்கழகம் , இயற்கை வானியல் , அலை இடையூறு நிகழ்வுகள் , இடம் கிரகங்கள் அறிவியல் , கிரகங்கள் நிலவுகள் , நட்சத்திரங்கள் தி சூரியன் ,

Scientists propose a new heavy particle similar to the Higgs boson


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IMAGE: Simulation of a collision in the Large Hadron Collider, producing the Higgs boson. © 1997-2021 CERN (License: CC-BY-SA-4.0)
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Credit: university of granada
Unlike the Higgs boson, discovered at CERN s Large Hadron Collider in 2012 after a 40-year quest, the new particle proposed by these researchers is so heavy that it could not be produced directly even in this collider
The University of Granada is among the participants in this major scientific advancement in Theoretical Physics, which could help unravel the mysteries of dark matter
Scientists from the University of Granada (UGR) and the Johannes Gutenberg University Mainz (Germany) have recently published a study in which they endeavour to extend the Standard Model of particle physics (the equivalent of the periodic table for particle physics) and answer some of the questions that this model is unable to answer. Such puzzles include: What is dark matter made of? Why ....

Theodor Kaluza , Oskar Klein , Matthias Neubert , Javier Castellano , Johannes Gutenberg University Mainz Germany , University Of Mainz , Department Of Theoretical Physics , University Of Granada , Hadron Collider , Theoretical Physics , Johannes Gutenberg University Mainz , Standard Model , Professor Matthias Neubert , Chemistry Physics Materials Sciences , Atomic Molecular Particle Physics , ஆஸ்கர் க்ளீன் , மத்தியாஸ் நியூபெர்ட் , ஜேவியர் காஸ்டெல்லனோ , துறை ஆஃப் கோட்பாட்டு இயற்பியல் , பல்கலைக்கழகம் ஆஃப் க்ரெநாட , ஹாட்ரான் மோதல் , கோட்பாட்டு இயற்பியல் , தரநிலை மாதிரி , ப்ரொஃபெஸர் மத்தியாஸ் நியூபெர்ட் , வேதியியல் இயற்பியல் பொருட்கள் அறிவியல் , அணு மூலக்கூறு துகள் இயற்பியல் ,