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.

Add new comment

  • Coastaldigest.com reserves the right to delete or block any comments.
  • Coastaldigset.com is not responsible for its readers’ comments.
  • Comments that are abusive, incendiary or irrelevant are strictly prohibited.
  • Please use a genuine email ID and provide your name to avoid reject.
News Network
May 24,2020

New Delhi, May 24: The Indian economy is likely to slip into recession in the third quarter of this fiscal as loss in income and jobs and cautiousness among consumers will delay recovery in consumer demand even after the pandemic, says a report.

According to Dun & Bradstreet's latest Economic Observer, the country's economic recovery will depend on the efficacy and duration of implementation of the government's stimulus package.

"The multiplier effect of the stimulus measures on the economy will depend on three key aspects i.e. the time taken for effecting the withdrawal of the lockdown, the efficacy of implementation and duration of execution of the measures announced," Dun & Bradstreet India Chief Economist Arun Singh said.

The report noted that the government's larger-than-expected stimulus package is likely to re-start economic activities.

Besides, measures taken by the Reserve Bank of India like reducing the repo rate by a further 40 basis points to 4 per cent, extending the moratorium period by three months and facilitating working capital financing will also help stimulate the momentum.

Singh said while the measures announced by the government are "positive", most of them have been directed towards strengthening the supply side of the economy, and "it is to be noted that supply needs to be matched with demand", he said.

Besides, "in the absence of cash-in-hand benefits under the government's stimulus package, demand for goods and services is expected to remain depressed", he added.

He further said the loss in income and employment opportunities, and cautiousness among consumers, will lead to a delayed recovery in consumer demand, even after the pandemic. As debt and bad loan levels increase, the banking sector might face challenges.

The report further noted that even as the monetary stimulus is expected to inject liquidity and stimulate demand for a wider section of the economy, the channelisation of funds from the financial institutions will be subjected to several constraints.

The foremost concern being increase in risk averseness, as the balance sheets of firms, households, and banks/NBFCs have weakened considerably and low demand for funds by firms as production activities have been on a standstill during the lockdown period, Singh said.

India has been under lockdown since March 25 to contain the spread of the coronavirus, resulting in supply disruptions and demand compression.

Prime Minister Narendra Modi imposed a nationwide lockdown to control the spread of coronavirus on March 25. It has been extended thrice, with some relaxations. The fourth phase of the lockdown is set to expire on May 31. 

Comments

Add new comment

  • Coastaldigest.com reserves the right to delete or block any comments.
  • Coastaldigset.com is not responsible for its readers’ comments.
  • Comments that are abusive, incendiary or irrelevant are strictly prohibited.
  • Please use a genuine email ID and provide your name to avoid reject.
News Network
January 1,2020

New Delhi, Jan 1: The new Army chief Lieutenant General MM Naravane on Wednesday said that India needs to pay more attention to its border along China and asserted that the force is capable of dealing with any security challenge.

"We have been giving attention to our western front in the past. The northern front now also requires an equal amount of attention... The Army is capable of tackling any dangers to the country," General Naravane told reporters after receiving the first Guard of Honour as the Army chief.

"In that context, we are now going in for capability development and enhancement of our capacities even in our northern borders which includes the northeastern part of our country," he said.

On the border dispute with China, the Army chief said that continuing peace along the border will pave the way for a solution.

He said: "We have been able to maintain peace and tranquility along borders and I'm sure that situation will prevail. By maintaining this, we will be able to set the stage for the eventual solution."

General Naravane said that operational readiness and modernisation will be among the top priorities of the Army under his leadership.

"Our priority will be to be ready to meet any challenge and to be operationally prepared at all times. This will happen as a result of modernisation. We will continue to build our capability especially in the North and Northeast region of our country," he said.

He said that the Indian Army will pay special attention to respect human rights. "We will also pay special emphasis on raising security awareness among ranks and file and pay special attention to respect human rights," the Army chief said.

Assuring the country on security, he said, "All three services — the Army, the Navy and the Air Force — are ready to defend the country."

He extended wishes to people in the new year and hoped that the country will make huge progress in this decade.

General Naravane took over as the 28th Chief of the Army Staff (COAS) on Tuesday, succeeding General Bipin Rawat who has become India's first Chief of Defence Staff (CDS).

General Naravane was previously the Vice Chief of Army Staff.

Comments

Add new comment

  • Coastaldigest.com reserves the right to delete or block any comments.
  • Coastaldigset.com is not responsible for its readers’ comments.
  • Comments that are abusive, incendiary or irrelevant are strictly prohibited.
  • Please use a genuine email ID and provide your name to avoid reject.
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.

Comments

Add new comment

  • Coastaldigest.com reserves the right to delete or block any comments.
  • Coastaldigset.com is not responsible for its readers’ comments.
  • Comments that are abusive, incendiary or irrelevant are strictly prohibited.
  • Please use a genuine email ID and provide your name to avoid reject.