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
June 4,2020

Jun 4: Mahatma Gandhi’s statue outside the Indian Embassy in Washington DC was vandalised with graffiti and spray painting by unknown persons allegedly involved in the ongoing protests in the US against the custodial killing of African-American George Floyd.

This has prompted the mission officials to register a complaint with the local law enforcement agencies.

The incident is reported to have taken place on the intervening night of June 2 and 3 in Washington DC.

The Indian embassy has informed the State Department and registered a complaint with local law enforcement agencies, which are now conducting an investigation into the incident.

On Wednesday, a team of officials from Metropolitan Police in consultation with the Diplomatic Security Service and National Park Police visited the site and are conducting inquiries.

Efforts are on to clean up the site at the earliest.

Vandalism of the statue of the apostle of peace comes during the week of nationwide protests against the custodial killing of African-American George Floyd in Minneapolis on May 25.

Several of these protests have turned violent which many times has resulted in damage of some of the most prestigious and sacred American monuments.

In Washington DC, protestors this week burnt a historic church and damaged some of the prime properties and historic places like the national monument and Lincoln Memorial.

One of the few statues of a foreign leader on a federal land in Washington DC, the statue of Mahatma Gandhi was dedicated by the then Prime Minister Atal Bihari Vajpayee, in the presence of the then US president Bill Clinton on September 16, 2000, during his state visit to the US.

In October 1998, the US Congress had authorised the government of India to establish and maintain a memorial “to honour Mahatma Gandhi on Federal land in the District of Columbia."

According to the Indian Embassy website, the sculpture of Mahatma Gandhi is cast in bronze as a statue to a height of 8 feet 8 inches. It shows Gandhi in stride, as a leader and man of action evoking memories of his 1930 protest march against salt-tax, and the many padyatras (long marches) he undertook throughout the length and breadth of the Indian sub-continent.

The statue, the design of which was created by Gautam Pal, is a gift from the Indian Council for Cultural Relations (ICCR). The pedestal for the statue of Mahatma Gandhi is a block of new Imperial Red also known as Ruby Red a block originally weighing 25 tonnes reduced to a size of 9'x7'x3'4". It now weighs 16 tonnes.

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News Network
February 18,2020

Ayodhya, Feb 18: A senior Supreme Court lawyer has written to the Ram temple trust on behalf of a group of Muslims in Ayodhya, asking that five acres of land around the demolished Babri Masjid where a graveyard is situated be spared for the sake of 'sanatan dharma'.

The letter, written by advocate M R Shamshad, is addressed to all 10 trustees of Shri Ram Janmabhoomi Teertha Kshetra.

Shamshad said according to Muslims, there is a graveyard known as 'Ganj Shahidan' around the demolished Babri Masjid where 75 Muslims who lost their lives in the 1885 riots in Ayodhya were buried.

"There is a mention of this in Faizabad Gazetteer also," he said.

"The central government has not considered the issue not using the grave-yard of Muslims for constructing the grand temple of Lord Ram. It has violated 'dharma'," the letter stated.

"In view of religious scriptures of 'sanatan dharma', you need to consider whether the temple of Lord Ram can have foundation on the graves of Muslims? This is a decision that the management of the trust has to take," it said.

"With all humility and respect to Lord Ram, I request you, not to use the land of about four to five acres in which the graves of Muslims are there around the demolished mosque," the letter added.

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News Network
March 9,2020

Mumbai, Mar 9: India's Yes Bank will not be merged with State Bank of India, which is set to infuse funds in the beleaguered lender, the newly appointed administrator leading the rescue plan said in a television interview on Monday.

"There is absolutely no question of a merger," Prashant Kumar, the administrator, told the CNBC TV18 channel.

The Reserve Bank of India (RBI) on Thursday took control of Yes Bank, after the lender - which is laden with bad debts - failed to raise the capital it needs to stay above mandated regulatory requirements.

Placing Yes Bank under a 30-day moratorium, the central bank imposed limits on withdrawals to protect depositors and said it would work on a revival plan. The move spooked depositors, who rushed to withdraw funds from the bank.

Kumar, a former finance chief at SBI, assured depositors their money was safe and that the moratorium on Yes Bank might be lifted much before the deadline on April 3 and normal banking operations might resume as early as Friday.

He also mentioned that the withdrawal limit of Yes Bank may be removed by March 15, 2020.

SBI Chairman Rajnish Kumar said on Saturday the state-run bank would need to invest up to 24.5 billion rupees ($331 million) to buy a 49% stake in Yes Bank as part of the initial phase of the rescue deal, adding that the survival of troubled lender was a "must".

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