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.

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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
July 16,2020

Mumbai, Jul 16: Poet-activist Varavara Rao has tested positive for Covid-19. The 80-year old, named as accused in the Elgar Parishad case, was shifted to state-run JJ Hospital from Taloja central jail where he was lodged after he complained of dizziness. The hospital conducted tests including one for Covid-19 the results for which confirmed that he is positive.

Dr Ranjit Mankeshwar, the dean of JJ Hospital said, “He has shown no symptoms of Covid-19 so far. He has no breathing difficulty and is stable. We will soon shift him to a Covid hospital.” Rao is likely to be shifted to St George hospital.

Last week, Rao’s family had held a press conference after receiving a call from him from prison. His family had then said that his condition was deteriorating and he should be provided immediate medical aid. He was earlier shifted to the hospital when he fell unconscious in jail in May but was discharged within three days. The family had said that he was not provided proper medical treatment.

Last month, a special court had rejected his interim bail plea where he had cited his susceptibility to the virus due to his age and other medical conditions. The court, however, had said the superintendent of prison has been directed to take appropriate measures in such cases where medical attention is required. Before he was shifted to the hospital on Tuesday, Rao was admitted to the hospital ward of the jail and as he had been unable to do basic chores without depending on other inmates.

An appeal against the special court’s order is pending before the Bombay High Court. The plea is likely to be heard tomorrow.

Comments

Naresh
 - 
Thursday, 16 Jul 2020

Real criminals got bail or they r free from jail becoz of corona. Varavara rao and other innocents under custody.

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News Network
March 12,2020

Mar 12: Three women were arrested for allegedly administrating fake coronavirus vaccines to villagers in Maharashtra's Jalna district, police said on Thursday.

The police on Wednesday arrested Beed residents Radha Ramnath Saamse, Seema Krishna Andhale and Sangeeta Rajendra Avhad, who allegedly posed as doctors and healthcare workers, an official said.

The trio met villagers of Pipalgoan in Ambad tehsil, informed them about a vaccine that could protect them from coronavirus and administered it to gullible locals, he said.

Some villagers informed Dr Mahadev Munde, a medical officer at a rural health centre, about this, after which a complaint was lodged, the official said.

Fake vaccines and bottles, which were seized from the accused, have been sent to the state health department, he said, adding that a case of cheating has been registered against the trio.

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Agencies
July 13,2020

New Delhi, Jul 13: Google CEO Sundar Pichai on Monday announced an investment of Rs 75,000 crore or approximately US$10 billion into India over the next five to seven years through 'Google for India Digistation Fund'.

This move is significant as it comes in the middle of the COVID-19 pandemic and as multinational companies across the world look at alternative investment destinations.

"Excited to announce Google for India Digitisation Fund. Through it, we will invest Rs 75,000 crore or approx US$10 Billon into India over the next 5-7 yrs. We'll do this through a mix of equity investments, partnerships and operational infrastructure in ecosystem investments," said Pichai.

Pichai along with Union Minister Ravi Shankar Prasad virtually attended the sixth annual edition of Google for India.

"This is a reflection of our confidence in the future of India and its digital economy," said Pichai.
He added that the investments will focus on four areas important to India's digitisation.

Listing out the areas, Pichai elaborated, "First enabling affordable access and information to every Indian in their own language. Second, building new products and services that are deeply relevant to India's unique needs. Third, empowering businesses as they continue or embark on the digital transformation. Fourth, leveraging technology in AI for social good in areas like health, education and agriculture."

"When I was young, every piece of technology brought new opportunities to learn and grow but I always had to wait for it to arrive from some places. Today people in India no more have to wait for technology to come to you. A whole new generation of technologies is happening in India first," said Pichai.

Earlier today Prime Minister Narendra Modi interacted with Pichai and discussed a range of subjects like a new work culture in coronavirus times, data security and cyber safety.

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