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Study of supergiant star Betelgeuse unveils the cause of its pulsations

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IMAGE: Stellar pulsation causes the star s brightness to vary, but the large dip in brightness in early 2020 is unprecedented. A comparison of direct images of the surface of Betelgeuse between.
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Credit: ESO/M. Montargès et al.
Betelgeuse is normally one of the brightest, most recognizable stars of the winter sky, marking the left shoulder of the constellation Orion. But lately, it has been behaving strangely: an unprecedentedly large drop in its brightness has been observed in early 2020 (Figure 1), which has prompted speculation that Betelgeuse may be about to explode.
To find out more, an international team of scientists, including Ken ichi Nomoto at the Kavli Institute for the Physics and Mathematics of the Universe (Kavli IPMU), conducted a rigorous examination of Betelgeuse. They concluded that the star is in the early core helium-burning phase (which is more than 100,000 years before an explosion happens) and has smaller mas ....

United States , United Kingdom , Australian Capital Territory , Meridith Joyce , Kenichi Nomoto , Chiaki Kobayashi , John Amari , Shing Chi Leung , Institute Of Physics , Research School Of Astronomy , Walter Burke Institute For Theoretical Physics , University Of Hertfordshire , University Of Tokyo Institutes For Advanced Study , Department Of Physics , Australian National University , Astrophysics Research , Research Center , Research Network , Kavli Institute For The Physics , Earth Sciences , California Institute Of Technology , University Of Tokyo , Field Cosmology Research Group , Kavli Institute , California Institute , Konkoly Observatory ,

Rare blast's remains discovered in Milky Way's center

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IMAGE: This composite image of X-ray data from Chandra (blue) and radio emission from the Very Large Array (red) contains the first evidence for a rare type of supernova in the.
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Credit: X-ray: NASA/CXC/Nanjing Univ./P. Zhou et al. Radio: NSF/NRAO/VLA
Astronomers may have found our galaxy s first example of an unusual kind of stellar explosion. This discovery, made with NASA s Chandra X-ray Observatory, adds to the understanding of how some stars shatter and seed the universe with elements critical for life on Earth.
This intriguing object, located near the center of the Milky Way, is a supernova remnant called Sagittarius A East, or Sgr A East for short. Based on Chandra data, astronomers previously classified the object as the remains of a massive star that exploded as a supernova, one of many kinds of exploded stars that scientists have catalogued. ....

Ping Zhou , United States , Noord Holland , Yang Chen , Kenichi Nomoto , Jacco Vink , Shing Chi Leung , Zhiyuan Li , Smithsonian Astrophysical Observatory Chandrax Ray Center , University Of Tokyo , University Of Amsterdam , Marshall Space Flight Center , X Ray Observatory , Milky Way , Type Ias , Type Iax , Nanjing University , Astrophysical Journal , Space Flight Center , Smithsonian Astrophysical Observatory , Chandrax Ray Center , Cambridge Massachusetts , Space Planetary Science , Satellite Missions Shuttles , Stars The Sun , பிங் ஜூ ,

Super-Earth, three gas giants discovered by high school students using TESS data- Technology News, Firstpost

Super-Earth, three gas giants discovered by high school students using TESS data
The mentorship program the students were part of, connects high schoolers interested in research with real-world scientists at Harvard and MIT.
Feb 02, 2021 09:33:14 IST
Two highschoolers from Massachusetts have helped discover four new exoplanets, according to new reports. The high school students, 12-year-old Kartik Pingle and 18-year-old Jasmine Wright are the second and third authors on the paper describing the discovery that was published on 25 January in
release by Harvard, the two participated in the research which detailed the discovery of four new exoplanets about 200-light years away from Earth through the Student Research Mentoring Program (SRMP) at the Center for Astrophysics at Harvard & Smithsonian (CfA). ....

United States , Kartik Pingle , Tansu Daylan , Clara Sousa Silva , Jasmine Wright , Kavli Institute For Astrophysics , Space Research , Student Research Mentoring Program , Milky Way , Mit Kavli Institute For Astrophysics And Space Research , Multiplanetary System , Sci Tech , Toi 1233 , ஒன்றுபட்டது மாநிலங்களில் , கார்த்திக் பிங்கிள் , டான்சு பகல் , கிளாரா சொசா சில்வா , மல்லிகை ரைட் , கவிளி நிறுவனம் க்கு வானியற்பியல் , இடம் ஆராய்ச்சி , மாணவர் ஆராய்ச்சி வழிகாட்டுதல் ப்ரோக்ர்யாம் , பால் வழி , மீட் கவிளி நிறுவனம் க்கு வானியற்பியல் மற்றும் இடம் ஆராய்ச்சி , அறிவியல் தொழில்நுட்பம் ,

Solving complex physics problems at lightning speed

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IMAGE: Physicists have developed a new method that enables emulation of complex calculations at lightning speed. This could yield new insights about the quantum properties of strongly interacting matter such as.
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Credit: Illustration: Andreas Ekström and Yen Strandqvist/Chalmers University of Technology
A calculation so complex that it takes twenty years to complete on a powerful desktop computer can now be done in one hour on a regular laptop. Physicist Andreas Ekström at Chalmers University of Technology, together with international research colleagues, has designed a new method to calculate the properties of atomic nuclei incredibly quickly. ....

United States , Achim Schwenk , Kai Hebeler , Gaute Hagen , Andreas Ekstr , Global Sensitivity Analysis Of Bulk Properties , Michigan State University , Oak Ridge National Laboratory , Department Of Physics At Chalmers , Chalmers University Of Technology , European Research Council , Carolina State University , Darmstadt University Of Technology , Chalmers University , Associate Professor , Dean Lee , North Carolina State University , Darmstadt University , Sensitivity Analysis , Bulk Properties , Physical Review Letters , Chemistry Physics Materials Sciences , Atomic Molecular Particle Physics , Nuclear Physics , Mathematics Statistics , Algorithms Models ,

Meeting the Milky Way

Meeting the Milky Way
The road to ESO’s La Silla Observatory in the Chilean Atacama Desert appears to curve around the mountain and collide with the downward slope of the Milky Way in this Picture of the Week. Small yellow bulbs light up the road at regular intervals; it is prohibited to use headlights on these roads between dusk and dawn, as even dim lights can interfere significantly with telescope observations. The site enjoys some of the darkest night skies on Earth.
The darkness, high altitude, and resulting dry air at La Silla make it an exceptional location for astronomy. In the foreground of this image, the Danish 1.54-metre telescope is performing its nightly observations. Its instruments have allowed astronomers to achieve several “firsts”. In 2005, for example, astronomers observed the afterglows of short gamma-ray bursts and showed that the bursts are likely caused by the dramatic collision of two neutron stars, while in 2006 the telescope was part of a g ....

Milky Way , Magallanesy Antaica Chilena , La Silla , Beta Centauri , Silla Observatory , Chilean Atacama Desert , Southern Cross Credit , Eso Org , பால் வழி , லா சில்லா , பீட்டா செண்ட Au ரி , சில்லா கண்காணிப்பு , தெற்கு குறுக்கு கடன் , எஸொ ஒர்க் ,