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
March 5,2020

New Delhi, Mar 5: Union Health Minister Harsh Vardhan assuring that the government has the coronavirus crisis under control, is like the Titanic captain telling passengers not to panic as his ship was unsinkable, Congress leader Rahul Gandhi said on Thursday.

Gandhi's remarks came after Vardhan's assurance in Parliament that the government is taking all necessary measures to prevent the spread of COVID-19 (coronavirus disease) in India.

“The health minister saying that the Indian government has the coronavirus crisis under control, is like the Captain of the Titanic telling passengers not to panic as his ship was unsinkable,” Gandhi said in a tweet.

“It's time the government made public an action plan backed by solid resources to tackle this crisis,” he said.

RMS Titanic was a British passenger liner that sank in the North Atlantic Ocean in the early morning hours of April 15, 1912, after striking an iceberg during her maiden voyage from Southampton to New York.

Gandhi has been raising concerns over the coronavirus infection since long. In a February 12 tweet, he had said coronavirus is an extremely serious threat to “our people and our economy”.

“My sense is the government is not taking this threat seriously. Timely action is critical,” he had said.

Earlier this week, Gandhi had hit out at Prime Minister Narendra Modi over the detection of fresh coronavirus cases in the country, saying he should quit wasting India's time “playing the clown” with his social media accounts when India is facing an emergency.

With the message of “Here's how it's done”, Gandhi had also tweeted a video of Singaporean Prime Minister Lee Hsien Loong addressing Singaporeans on how to deal with the coronavirus.

The number of coronavirus cases in India is 29, including 16 Italians, the government had said on Wednesday, adding all international passengers will now be screened at airports, amid growing concern over the spread of the respiratory infection.

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News Network
March 16,2020

New Delhi, Mar 16: Reliance Group Chairman Anil Ambani has been summoned by the ED in connection with its money laundering probe against Yes Bank promoter Rana Kapoor and others, officials said on Monday.

They said Ambani was asked to depose at the Enforcement Directorate office in Mumbai on Monday as his group companies are among the big entities whose loans went bad after borrowing from the crisis-hit bank.

The officials said Ambani, 60, has sought exemption from appearance on some personal grounds and he may be issued a new date.

Ambani's group companies are stated to have taken loans of about Rs 12,800 crore from the bank that turned NPAs.

Finance Minister Nirmala Sitharaman had said in a March 6 press conference that the Anil Ambani Group, Essel, ILFS, DHFL and Vodafone were among the stressed corporates Yes Bank had exposure to.

Officials said promoters of all the big companies who had taken large loans from the beleaguered bank which later turned bad are being summoned for questioning in the case to take investigation forward.

Ambani's statement will be recorded under the Prevention of Money Laundering Act (PMLA) upon deposition, they said.

Kapoor, 62, is at present in ED custody after he was arrested by the central probe agency early this month.

The ED has accused Kapoor, his family members and others of laundering "proceeds of crime" worth Rs 4,300 crore by receiving alleged kickbacks in lieu of extending big loans through their bank that later turned NPA.

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News Network
January 20,2020

Langkawi, Jan 20: Malaysia will not take retaliatory trade action against India over its boycott of palm oil purchases amid a political row between the two countries, Prime Minister Mahathir Mohamad said on Monday.

India, the world’s largest edible oil buyer, this month effectively halted imports from its largest supplier and the world’s second-biggest producer in response to comments from Mahathir attacking India’s domestic policies.

“We are too small to take retaliatory action,” Mahathir told reporters in Langkawi, a resort island off the western coast of Malaysia. “We have to find ways and means to overcome that,” he added.

The 94-year-old premier of Muslim-majority Malaysia has criticised New Delhi’s new religion-based citizenship law and also accused India of invading the disputed region of Kashmir.

Mahathir again criticised India’s citizenship law on Monday, saying he believed it was “grossly unfair”.

India has been Malaysia’s largest palm oil market for the past five years, presenting the Southeast Asian country with a major challenge in finding new buyers for its palm oil.

Benchmark Malaysian palm futures fell nearly 10% last week, their biggest weekly decline in more than 11 years.

New Delhi is also unhappy with Malaysia’s refusal to revoke permanent resident status for controversial Indian Islamic preacher Zakir Naik, who has lived in Malaysia for about three years and faces charges of money laundering and hate speech in India.

Mahathir said even if the Indian government guarantees a fair trial, Naik faces the real threat of vigilante action and that Malaysia will only relocate the preacher if it can find a third country where he would be safe.

“If we can find a place for him, we will send him out.”

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