Astronomers discover 83 supermassive black holes 13 billion light-years away

Agencies
March 15, 2019

Washington, Mar 15: Astronomers have discovered 83 quasars powered by supermassive black holes 13 billion light-years away from the Earth, from a time when the universe was less than 10 per cent of its present age.

“It is remarkable that such massive dense objects were able to form so soon after the Big Bang,” said Michael Strauss, a professor at Princeton University in the US.

“Understanding how black holes can form in the early universe, and just how common they are, is a challenge for our cosmological models,” Strauss said in a statement.

This finding, published in The Astrophysical Journal, increases the number of black holes known at that epoch  considerably, and reveals, for the first time, how common they are early in the universe’s history.

In addition, it provides new insight into the effect of black holes on the physical state of gas in the early universe in its first billion years.

Supermassive black holes, found at the centers of galaxies, can be millions or even billions of times more massive than the Sun.

While they are prevalent today, it is unclear when they first formed, and how many existed in the distant early universe.

A supermassive black hole becomes visible when gas accretes onto it, causing it to shine as a “quasar.” Previous studies have been sensitive only to the very rare, most luminous quasars, and thus the most massive black holes.

The new discoveries probe the population of fainter quasars, powered by black holes with masses comparable to most black holes seen in the present-day universe.

The team used data taken with “Hyper Suprime-Cam” (HSC) instrument, mounted on the Subaru Telescope of the National Astronomical Observatory of Japan, which is located on the summit of Maunakea in Hawaii.

The researchers selected distant quasar candidates from the sensitive HSC survey data.

They then carried out an intensive observational campaign to obtain spectra of those candidates, using three telescopes: the Subaru Telescope; the Gran Telescopio Canarias on the island of La Palma in the Canaries, Spain; and the Gemini South Telescope in Chile.

The survey revealed 83 previously unknown very distant quasars.

Comments

ABDUL AZIZ SHE…
 - 
Saturday, 16 Mar 2019

SUBHAANALLAH

 

 
ALLAH ALMIGHTY CREATED EVERTHING  INCLUDING WHOLE UNIVERSE AND WHAT IS IN IT,

HUMAN BEING CANNOT REACH TO UNDERSTAND IT,  HUMAN LIFE NOT SUFFEICENT TO REACH AND KNOW EVERYTHING.

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Agencies
May 10,2020

New Delhi, May 10: Congress leader Rahul Gandhi on Saturday demanded that Prime Minister Narendra Modi ensured audit of donations made to the PM-CARES Fund, and to share the details and the money spent with the people.

"The PM-CARES Fund has received huge contributions from PSUs and major public utilities like the Railways. It's important that the Prime Minister ensure the fund is audited and that the record of money received and spent is available to the public," he tweeted.

The #PmCares fund has received huge contributions from PSUs & major public utilities like the Railways.

It’s important that PM ensures the fund is audited & that the record of money received and spent is available to the public.

— Rahul Gandhi (@RahulGandhi) May 9, 2020
His remarks came amid reports that the central government is accumulating a huge sum of money in the Prime Minister's Citizen Assistance and Relief in Emergency Situations Fund set up as a corpus to fight novel coronavirus and that the amount spent will not be audited by the Comptroller and Auditor General.

The CAG office had clarified that since the fund is based on donations, it has no right to audit a charitable organisation.

On Friday, Rahul Gandhi told the media that the PM-CARES Fund should be audited and people of the country should know about the donors and the donations made.

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News Network
March 20,2020

New Delhi, Mar 20: The coronavirus pandemic will leave behind a global recession with small businesses, self-employed and daily wagers taking the worst hit, Mahindra Group Chairman Anand Mahindra said on thursday.

"The virus will eventually be conquered, but it will have left behind a global recession. The costs of that are incalculably high at this time. The most fearsome toll will be on small businesses, the self-employed & those whose lives depend on meagre daily wages," Mahindra said in a tweet.

Apart from the toll on lives, the legacy of Covid-19 may well be deaths due to stress, loss of livelihoods, a rise in homelessness and in extreme situations, civil unrest, he added.

"The only global experience that has lessons for us in the current situation is the last world war. In the aftermath of WW2, the US came up with the Marshall plan to revive Europe, effectively a giant fiscal pump-priming," Mahindra said.

In the US, the government dramatically dismantled regulations and opened up the economy to trade and these actions led to a boom-cycle that stretched to 1975, he added.

"This time, there will be no victors, only the vanquished. So every country will have to create its own post ‘virus war” marshall plan & take care of those in society who are hit the hardest. Perhaps we too can build the foundations of a sustained global growth cycle," Mahindra said.

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News Network
May 26,2020

Warangal, May 26: A 26-year-old man from Bihar was arrested here for murdering nine people by throwing them into a well to cover the murder of a woman, police said on Monday.

Dr Ravinder, Commissioner of Police (CP), Warangal, said that the bodies were recovered on May 21 and May 22 from the well. Investigation has revealed that the accused, Sanjay Kumar Yadav, killed all of them to cover up the murder of Rafiqa, with whom he had a relationship.

He said that Yadav got acquainted with a person named Maqsood and his sister-in-law Rafiqa. "Slowly, he came close to Rafiqa and started living together with her three children. Yadav tried to misbehave with Rafiqa's 15-year-old daughter. Rafiqa did not like this and threatened to lodge a complaint against him," Ravinder said.

"Then, Yadav planned to kill Rafiqa in order to live with her daughter. Yadav promised Rafiqa to marry. They boarded a train to West Bengal from March 7. Yadav mixed sleeping tablets in the food packet and later strangulated her, and threw her body outside the train," he said.

According to police, Yadav later came back to Warangal but Maqsood's wife Nisha started questioning him about the whereabouts of Rafiqa.

"Nisha threatened to lodge a police complaint against him. With a premeditated motive, from May 16 to May 20, he visited Maqsood's family who stayed in a gunny bag factory," he said.

Yadav purchased sleeping pills from Warangal and mixed in the food on the birthday of Maqsood's elder son on May 20, police said.

"Maqsood and his five family members were living there. Yadav mixed sleeping pills in the food and later they consumed it. Maqsood's family friend Shakeel was also there. Then, he went to the first floor of the factory where two labourers were staying. He mixed sleeping pills in their food too. He suspected that they may get up and create a problem. To cover up the murder of Rafiqa, he killed nine people," Ravinder said.

At around 12:30 am, Yadav woke up and saw that everyone is asleep, according to police.

"Then, he used the gunny bags to drag all the nine people into the well. He threw the gunny bag one by one into the well," Ravinder said.

According to the police, six teams were deployed to investigate the case.

"Yadav has been arrested now and will be taken to police custody. We will collect all evidence and ensure that he gets maximum punishment for this offence," Ravinder said.

 

Comments

abdullah
 - 
Thursday, 4 Jun 2020

Yadav will be released by court saying that he is mentally sick and he did not kill 10 people intentionally.  

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