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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News Network
January 15,2020

Jammu, Jan 15: Fresh landslides kept the Jammu-Srinagar National Highway shut for the third consecutive day on Wednesday, leaving over 5000 vehicles stranded.

"There were four fresh landslides in Digdol and Panthiyal belts on the highway in Ramban district. The traffic on the highway remained closed for the third day today", a police officer told PTI.

On Monday, heavy rains triggered shooting of stones in Moumpassi, Digdole and Panthiyal areas, forcing a suspension of the traffic, the official said.

Snowfall in Kashmir side of the highway, including Jawahar Tunnel, since Sunday has resulted in blockade of the highway.

"No fresh traffic was allowed from Nagrota in Jammu for Kashmir", he said.

As a result of the blockade of the highway, over 5000 vehicles remained stranded at various places en route from Lakhanpur in Kathua district to Banihal belt of Ramban district and also on the Kashmir side.

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Agencies
February 7,2020

Washington DC, Feb 7: United States on Thursday asked all countries to speak out against mistreatment of Muslims living in China especially in Xinjiang region by Chinese authorities.

Alice G. Wells, Principal Deputy Assistant Secretary for the Bureau of South and Central Asian Affairs, while talking to reporters appreciated the steps taken by Central Asian states to ensure that no ethnic Kazakh, Uighur, Kyrgyz is refouled to China and that the human rights of individuals who reach Central Asia are observed.

"As a matter of principle we urge all countries, not just Central Asian countries, to speak out against human rights abuses that are evident against Muslims in all of China but certainly in Xinjiang. And the countries of Central Asia, several of the countries of Central Asia have deep first-hand knowledge of those abuses given the direct impact it has on their own populations who have loved ones, family members, that are swept up in these detention centers," Wells said.

"We appreciate steps by Central Asian states to ensure that no ethnic Kazakh, Uighur, Kyrgyz is refouled to China, that the human rights of individuals who reach Central Asia are observed. And we also appreciate I think what countries like Kazakhstan can do to promote the free and safe travel of compatriots, ethnic compatriots across the border," she added.

China has been accused of oppressing the Uighurs by sending them to mass detention camps, interfering in their religious activities and sending the community to undergo some form of forceful re-education or indoctrination. However, Pakistan has stayed mum over this issue.

As many as 1 million people, or about 7 per cent of Xinjiang's Muslim population, have been incarcerated in a sprawling network of "political re-education" camps, according to US and UN studies.

In 2018, the New York-based Human Rights Watch released a report accusing Beijing of a "systematic campaign of human rights violations" against Uighur Muslims in Xinjiang.

Beijing says its camps in Xinjiang are "vocational training centres."

Last year, several documents leaked revealed details about Beijing's fears about religious extremism and its wholesale crackdown on Uighurs.

The US had called on the Chinese government to "immediately release all of those who are arbitrarily detained and to end its draconian policies that have terrorised its own citizens in Xinjiang."

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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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