Jets of high-energy plasma shooting away from supermassive black holes resemble bell-bottom pants — starting out narrow but ending with a flare. The shape can help astrophysicists tease out how such jets are launched and reveal details of their black holes , researchers report in the July Monthly Notices of the Royal Astronomical Society .
"From studying this region where the geometric transition happens, we can understand the black hole better," says astrophysicist Yuri Kovalev of the Lebedev Physical Institute of the Russian Academy of Sciences in Moscow.
Other things to check out:
New Insight Into the Magnetic Properties of the Black Hole at the Center of Our Galaxy
Catching a good photo of the celestial beast will require a better understanding of what’s going on around it, which has proved challenging due to the vastly different scales involved.
The system in question spans seven orders of magnitude. The black hole’s event horizon, or envelope of no return, reaches around 4 to 8 million miles from its center. Meanwhile, the stars orbit around 20 trillion miles away, or about as far as the sun’s nearest neighboring star.
PHOTO OF THE DAY: Black Hole Bounty Captured in the Center of the Milky Way
(NASA) – Astronomers have discovered evidence for thousands of black holes located near the center of our Milky Way galaxy using data from NASA’s Chandra X-ray Observatory.
This black hole bounty consists of stellar-mass black holes, which typically weigh between five to 30 times the mass of our Sun.
These newly identified black holes were found within three light-years — a relatively short distance on cosmic scales — of the supermassive black hole at our Galaxy’s center known as Sagittarius A* (Sgr A*).
Bitcoin's Battle, Robinhood Tragedy, $2.1B Black Hole: Hodler's Digest, June 15–21
Bitcoin is at a pivotal point — and the next few weeks are likely to be critical in establishing a medium-term price trend. The resistance zones are still clear: $10,100 to $10,500. According to analyst Michaël van de Poppe, another test of this resistance zone should end in a breakout to the upside. The more often a resistance gets tested, the weaker it becomes, as sellers get exhausted.
Wirecard, which issues Crypto.com’s debit cards, has a black hole of $2.1 billion in its finances. The major fintech company’s stock price plummeted by almost 50% after the issue came to light. According to the Financial Times, Wirecard staff in Dubai and Dublin appear to have conspired to falsely inflate sales and profits for almost a decade. Aside from Crypto.com, Wirecard also issues debit cards for Wirex, TenX and Cryptopay.
While you're here, how about this:
Lola's Black Hole - Havana Times
HAVANA TIMES – I don't know what to talk to you about first: Lola or the black hole that surrounds her. I haven't been able to put my finger on which of the two interests me the most. Let's start with her, as I can see her eating a homemade colorless ice cream right now.
Sitting on the wall of Antonio's doorway, it looks as if she is waiting for somebody or something. She is already twenty years old, but it's as if Time, in one of its temper tantrums, has trapped her in her 13 years forever.
"Amazing!" – Black Hole's Heart Still Beating
A black hole including the heartbeat signal observed in 2007 and 2018. Credit: Dr Chichuan Jin, of the National Astronomical Observatories, Chinese Academy of Sciences and NASA/Goddard Space Flight Center Conceptual Image Lab
X-ray satellite observations spotted the repeated beat after its signal had been blocked by our Sun for a number of years.
The research, by National Astronomical Observatories of Chinese Academy of Sciences, China, and Durham University, UK, was published in the journal Monthly Notices of the Royal Astronomical Society .
This Week in History: The Black Hole of Calcutta - Nightlife - ABC Radio
Beyond the black hole of global university rankings: rediscovering the true value of knowledge
The authors do not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and have disclosed no relevant affiliations beyond their academic appointment.
* * *
Te Herenga Waka—Victoria University of Wellington provides funding as a member of The Conversation AU.
The recent release of global university rankings and the way these are reported raises important questions about the role and reputation of our tertiary institutions.
Happening on Twitter
Some active black holes are stuck in the '70s. https://t.co/QLClStyJaK ScienceNews (from Washington, DC) Sat Jun 20 21:00:00 +0000 2020
A study in Nature shows that the very high-energy gamma-ray emission from quasars is not concentrated in the region… https://t.co/YVFJjDojZX nature (from London) Sat Jun 20 17:27:01 +0000 2020
The change in shape might reflect a change in the forces on the jet – where the flare starts, plasma is less pushed… https://t.co/PFpwsMDyUp ScienceNews (from Washington, DC) Sun Jun 21 16:00:00 +0000 2020
Out of that sample, just 10 jets had the shape of flared pants. But surprisingly, all of them were extremely close… https://t.co/pkjhdO90o4 ScienceNews (from Washington, DC) Thu Jun 18 11:24:40 +0000 2020
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