Cosmic explosions offer new clue to how stars become Black Holes

Asia's Tech News Daily

Cosmic explosions offer new clue to how stars become Black Holes

Scientists have witnessed for the first time exactly what happens to the most massive stars at the end of their lives.

Most very large stars explode in a fiery supernova explosion that leaves behind a neutron star in a process frequently witnessed by Earth’s most powerful telescopes.

But some – the most massive, 30 times the size of the Sun or more – are believed to undergo a less visible metamorphosis and transform into black holes without the same cosmic fireworks produced by smaller stars.

Now, a group of astronomers have described what may be one of these in detail, by detecting unusual behaviour in the explosion of a star within a galaxy 1.2 billion light years from Earth.

Big surprise
“Normally, when a massive star dies, almost the entire star is blown apart by the explosion” explains Dr Daniel Perley, an astrophysicist at Liverpool John Moores University and lead author on a paper accepted for publication in the Astrophysical Journal.

“What we witnessed in this case is something quite different: a much briefer explosion caused by collisions between a small amount of material exiting the star at extremely high speeds with other material that had built up in its vicinity before it collapsed.”

While collisions of this nature are not entirely unusual, the big surprise was what happened next.

“Once the collisions were over, we had expected to see signs of the bulk of the star dissipating into space after being blown apart. But we saw no sign of this – suggesting only a tiny fraction of the star was released in the explosion. We infer that the rest of it collapsed inward to produce a massive black hole.”

‘Death throes’
Although this explosion was very unusual, the team, which includes scientists from Weizmann Institute of Science in Israel, the Oskar Klein Institute in Sweden, and Caltech and Berkeley in the US, believes this scenario may actually be quite common.

They say that as a very massive star enters its “death throes”, it starts shedding material at high speeds in dense “winds” or in much smaller eruptions. The result is that the space around the star is filled with enriched gas in the months or even years before the final explosion. However, the amount of material released varies from star to star.

In this case, telescopes got lucky because there was a particularly large amount of pre-existing material around the star, which made the explosion very bright and easy to find.

“The same scenario could happen far more frequently and not produce enough light for us to be able to detect most of the time,” added Dr Perley, who is based at the LJMU Astrophysics Research Institute and collaborated on the research with Professor Chris Copperwheat.

“In fact, if a similar explosion occurred without an environment rich in gas, we might never know it even happened.”

Liverpool Telescope’s role
The explosion was discovered by the Zwicky Transient Facility at Palomar, California and tracked by the Liverpool Telescope on La Palma – a robotic scope which reacts immediately to events in the night-sky – the Hubble Space Telescope, the Nordic Optical Telescope, the Keck Observatory and NASA’s Neil Gehrels Swift Observatory.

Research Report: “The Type Icn SN 2021csp: Implications for the Origins of the Fastest Supernovae and the Fates of Wolf-Rayet Stars”

Internet Explorer Channel Network
Asia's Tech News Daily
News Related

OTHER NEWS

Deciphering conditions around the Sun five million years ago

Using high-resolution data obtained from the Space Telescope Imaging Spectrograph aboard the Hubble Space Telescope, Wesleyan University Professor of Astronomy Seth Redfield can show the conditions the Sun encountered traveling ... Read more »

Researchers Observe Massive CME on Distant, Sun-Like Star

EK Draconis illuminates an unimagined picture of how superflares may affect interplanetary space through coronal mass ejections Welcome to the New Year! While Earth celebrated 2022’s arrival with displays of ... Read more »

North Pole solar eclipse excited auroras on the other side of the world

A solar eclipse over the Arctic created changes in auroras in both of Earth’s hemispheres due to connections through the planet’s magnetic field, according to a new study. The new ... Read more »

Increased space missions risk extraterrestrial contamination

The days of the U.S.-Soviet Space Race are over, and the domain of space exploration is expanding daily to include more countries than ever before. With the advent of private ... Read more »

Planet to launch 44 SuperDove satellites on SpaceX's Falcon 9

Planet Labs PBC reports announced that the launch of their Flock 4x, consisting of 44 SuperDove satellites, will take place on Thursday, January 13th on SpaceX’s Falcon 9 Transporter-3 SSO. ... Read more »

Mangata Networks announces funding for satellite edge computing network

Mangata Networks has closed a $33 million Series A round led by US-based venture capital firm Playground Global to continue its mission to transform the way the world interacts with ... Read more »

Advances in Space Transportation Systems Transforming Space Coast

From a seaside perch overlooking the hustle and bustle of ships coming and going at Port Canaveral on Florida’s east coast, Dale Ketcham reflects on decades of history with nostalgia. ... Read more »

Indian Space Agency tests cryogenic engine for its first-ever manned mission

India’s flagship human spaceflight mission, Gaganyaan, has completed the design and testing phases. The Indian Space Research Organisation (ISRO) plans to launch two uncrewed missions ahead of the final mission ... Read more »

Manufacturing revenues for Earth observation to grow to $76.1 billion by 2030

Euroconsult, the leading space consulting and market intelligence firm, has released its eagerly awaited ”Earth Observation Satellite Systems Market” report, providing a sweeping review analysis of the Earth Observation (EO) ... Read more »

NASA's new IXPE mission begins science operations

NASA’s newest X-ray eyes are open and ready for discovery! Having spent just over a month in space, the Imaging X-ray Polarimetry Explorer (IXPE) is working and already zeroing in ... Read more »

Ride into space on Vega-C secured for FLEX and Altius

A contract signed with Arianespace secures the joint launch for two satellites that will further knowledge of our home planet. Scheduled to lift off on a new class of rocket, ... Read more »

The Incredible ASIM: Distant galaxy edition

The Atmosphere-Space Interactions Monitor, or ASIM for short, is a first-of-its-kind complement of instruments on the International Space Station. Dubbed the ‘space storm hunter’, ASIM measures electric events in Earth’s ... Read more »

From dust to planet: how gas giants form

Gas giants are made of a massive solid core surrounded by an even larger mass of helium and hydrogen. But even though these planets are quite common in the Universe, ... Read more »

SDSS-V robots turn their eyes to the sky

After twenty-one years of observers loading heavy aluminum plates night after night, the Sloan Digital Sky Survey (SDSS) is now seeing the cosmos through robotic eyes. Following more than five ... Read more »

Cheops reveals a rugby ball-shaped exoplanet

ESA’s exoplanet mission Cheops has revealed that an exoplanet orbiting its host star within a day has a deformed shape more like that of a rugby ball than a sphere. ... Read more »

Advertising plays key role in satellite TV success, study shows

The pay television market in the United States was dominated by a handful of cable operators until the early 1990s with the entry of satellite TV, which has grown consistently ... Read more »

Elusive atmospheric molecule produced in a lab for the 1st time by UH

The previously elusive methanediol molecule of importance to the organic, atmospheric science and astrochemistry communities has been synthetically produced for the first time by University of Hawai?i at Manoa researchers. ... Read more »

Astroscale U.S. and Orbit Fab sign first on-orbit satellite fuel sale agreement

Orbit Fab, the Gas Stations in Space refueling service provider and Astroscale U.S. Inc., the U.S. subsidiary of Astroscale Holdings Inc. and market leader in securing long-term orbital sustainability, has ... Read more »

ASU instrument captures breathtaking 'first light' images

ASU scientists and engineers building the Europa Thermal Emission Imaging System (E-THEMIS) for NASA’s Europa Clipper passed a major hurdle recently by capturing the first successful test images from this ... Read more »

Astronomers identify potential clue to reinonization of universe

About 400,000 years after the universe was created began a period called “The Epoch of Reionization.” During this time, the once hotter universe began to cool and matter clumped together, ... Read more »

Mini monster black hole could hold clues to giant's growth

The discovery of a supermassive black hole in a relatively small galaxy could help astronomers unravel the mystery surrounding how the very biggest black holes grow. Researchers used NASA’s Chandra ... Read more »

Simulated Image Shows How NASA's Roman Could Expand on Hubble's Deepest View

A team of astrophysicists has created a simulated image that shows how the Nancy Grace Roman Space Telescope could conduct a mega-exposure similar to but far larger than Hubble’s celebrated ... Read more »

Ocean Physics Explain Cyclones on Jupiter

Hurtling around Jupiter and its 79 moons is the Juno spacecraft, a NASA-funded satellite that sends images from the largest planet in our solar system back to researchers on Earth. ... Read more »

Gilmour Space fires up for 2022 with Australia's largest rocket engine test

Rocket engineers at Gilmour Space Technologies have greeted the new year with a successful 110-kilonewton test fire of the most powerful rocket engine ever developed in Australia. The 75-second test ... Read more »

Prestwick Spaceport Files Planning Application Notice

South Ayrshire Council has started the process of submitting a formal planning application for the Prestwick Spaceport development. The Proposal of Application Notice (POAN) is the first step in the ... Read more »

Life could be thriving in the clouds of Venus

by Eric Verbeten for WISC News Is there life on Venus? For more than a century, scientists have pondered this question. Now, there is renewed interest in Venus as a ... Read more »

How the Earth's tilt creates short, cold January days

As the Earth orbits the sun, it spins around an axis – picture a stick going through the Earth, from the North Pole to the South Pole. During the 24 ... Read more »

NASA's newest astronaut class begins training in Houston

NASA swore in 10 new astronaut candidates Monday at Johnson Space Center in Houston — six men and four women — who someday may walk on the moon or Mars. ... Read more »

Shouzhou XIII crew finishes cargo spacecraft, space station docking test

The Shenzhou XIII astronauts in China’s space station core module have completed the manual rendezvous and docking experiment with the Tianzhou 2 cargo craft, the China Manned Space Agency (CMSA) ... Read more »

Take-Two to buy 'Farmville' creator Zynga for $12.7 bn

Video game publisher Take-Two announced Monday it reached a deal to acquire “Farmville” creator Zynga for $12.7 billion, in a major mobile gaming push by the maker of “Grand Theft ... Read more »

Hubble sees cosmic clues in a galactic duo

This spectacular image from the NASA/ESA Hubble Space Telescope captures the spiral galaxy NGC 105, which lies roughly 215 million light-years away in the constellation Pisces. While it looks like ... Read more »

Eccentric exoplanet discovered

Led by the University of Bern, an international research team has discovered a sub-Neptune exoplanet orbiting a red dwarf star. The discovery was also made thanks to observations performed by ... Read more »

Real-time alert system heralds new era in fast radio burst research

McGill University scientists have developed a new system for sharing the enormous amount of data being generated by the CHIME radio telescope in its search for fast radio bursts (FRBs), ... Read more »

NASA to host coverage for Webb Telescope's final unfolding

NASA will provide live coverage and host a media briefing Saturday, Jan. 8, for the conclusion of the James Webb Space Telescope’s major spacecraft deployments. Beginning no earlier than 9 ... Read more »

Loft Orbital extends production agreement with LeoStella

Loft Orbital Solutions, Inc. (Loft Orbital), a leading space infrastructure-as-a-service provider, and LeoStella, Inc., a specialized satellite constellation design and manufacturing company, have extended their production agreement to secure multiple ... Read more »

Asteroid with a refreshed surface

How did our Solar System form and evolve? Various models for the creation of our system of planets have been proposed, but the planets themselves provide unfortunately little information as ... Read more »

Arianespace consolidates leadership in commercial market with 15 Ariane, Soyuz and Vega launches in 2021

Arianespace confirmed its strong performance in 2021, with 15 successful launches – five more than in 2020 – and 305 satellites sent into orbit using its three launchers, Ariane, Soyuz ... Read more »

Debris from failed Russian rocket falls into sea near French Polynesia

The upper stage of a failed Russian Angara A5 rocket plummeted uncontrolled to Earth, crashing into open sea near French Polynesia. The U.S. 18th Space Control Squadron confirmed the 4 ... Read more »

Metaverse gets touch of reality at CES

A jacket equipped with sensors that let wearers feel hugs or even punches in virtual reality was among the innovations giving the metaverse a more realistic edge at the Consumer ... Read more »

Webb Secondary Mirror Deployment Confirmed

The Webb teams has deployed the observatory’s secondary mirror support structure. When light from the distant universe hits Webb’s iconic 18 gold primary mirrors, it will reflect off and hit ... Read more »
On free-english-test.com you will find lots of free English exam practice materials to help you improve your English skills: grammar, listening, reading, writing, ielts, toeic