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 29,2020

New Delhi, Jan 29: Badminton champion Saina Nehwal joined the ruling BJP today and is likely to campaign for the party ahead of the February 8 Delhi election.

"I have won medals for the country. I am a very hardworking and I love hardworking persons. I can see Prime Minister Narendra Modi does so much for the country, I want to do something for the country with him," the shuttler said, wearing the BJP scarf.

"I draw a lot of inspiration from Narendra sir".

Haryana-born Saina Nehwal, 29, is a major acquisition for the party in the middle of the Delhi poll campaign; she is one of the most popular sportspersons in India with a huge fan following and brand value. She is preparing for the 2020 Tokyo Olympics.

A former world number 1, she has been honoured with the country's top sporting awards like the Rajiv Gandhi Khel Ratna and Arjuna Award. She was also awarded the Padma Bhushan in 2016.

The Badminton player has won over 24 international titles. In the London Olympics, she won a bronze. She was world number two in 2009 and number one in 2015.

With her tweets praising Prime Minister Narendra Modi, Saina Nehwal was widely seen to lean towards the BJP.

One of her tweets became controversial when it was found to be identical to several others in praise of a PM Modi speech last year. Saina was trolled on Twitter with screenshots of the identical tweets. She was also among the sportswomen who put up identical tweets on Diwali thanking PM Modi for his initiative to empower women, with the hashtag #bharatkilaxmi.

The BJP roped in many famous personalities last year, including cricketer Gautam Gambhir, who was elected MP from Delhi in the national election, and wrestler Babita Phogat. Just before the Haryana assembly polls, the party roped in wrestler Sushil Kumar, Babita Phogat and former Hockey team captain Sandeep Singh. Sandeep Singh won the election and was appointed minister.

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News Network
February 14,2020

Washington, Feb 14: The United States has called for making Jamaat-ud-Dawa (JuD) chief Hafiz Saeed accountable for his involvement in the planning of "numerous acts of terrorism, including 2008 Mumbai attacks". "We continue to call for Hafiz Saeed to be held accountable for his involvement in the planning of numerous acts of terrorism, including 2008 Mumbai attacks that killed 166 innocent people, including 6 Americans," US State Department spokesperson said on Thursday (February 13, 2020).

US State Department spokesperson said this while commenting on the Saeed`s conviction in terror financing cases.

The spokesperson said Hafiz Saeed`s conviction on terror financing is a step towards curtailing the operation of a terrorist group that threatens peace and stability in South Asia.

"We urge Pakistan to continue to take appropriate legal action against individuals who commit acts of terrorism, raise funds for, or advocate for terrorism," the official said.

On Wednesday, Alice Wells, Principal Deputy Assistant Secretary of US for South and Central Asian Affairs had termed the conviction of 26/11 Mumbai terror attack mastermind Hafiz Saeed as an "important step forward" towards holding terrorist organisation LeT "accountable for its crimes".

"Today`s conviction of Hafiz Saeed and his associate is an important step forward - both toward holding LeT accountable for its crimes and for #Pakistan in meeting its international commitments to combat terrorist financing," she tweeted.

"And as @ImranKhanPTI has said, it is in the interest of #Pakistan`s future that it not allow non-state actors to operate from its soil," she said in another tweet.

An anti-terrorism court in Lahore, Pakistan on Wednesday sentenced Mumbai terror attack mastermind and chief of the banned Jamaat-ud -Dawa (JuD) Hafiz Saeed to five-and-a-half years in prison each in two terror financing cases.

Pakistan based Dawn reported that he was slapped with a prison sentence of five-and-a-half years and a fine of Rs15,000 in each case and the sentences of both cases will run concurrently.

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News Network
May 14,2020

London, May 14: Fugitive liquor baron Vijay Mallya on Thursday urged the Central government to accept his offer to repay 100 per cent of his loan dues and close the case against him.

While congratulating the Centre for introducing Rs 20 lakh crore relief package to boost the economy amid the coronavirus lockdown, Mallya, lamented that his repeated attempts to pay back his dues have been ignored by the Indian government.

"Congratulations to the Government for a Covid 19 relief package. They can print as much currency as they want BUT should a small contributor like me who offers 100% payback of State-owned Bank loans be constantly ignored? Please take my money unconditionally and close," he tweeted.

Earlier this month, Mallya had sought permission to appeal against a ruling ordering his extradition to India in Britain's highest court the UK Supreme Court.

The application comes two weeks after the High Court in London - the UK's second-highest court - dismissed Mallya's appeal against a lower court ruling that he be sent to India to face charges of defrauding a consortium of Indian banks of more than Rs 9,000 crores relating to the collapse of Kingfisher Airlines in 2012.

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