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
November 21,2024

modiadani.jpg

After the US prosecutors charged Gautam Adani with bribery and fraud, Congress reiterated its call for a Joint Parliamentary Committee (JPC) probe into the transactions of the Adani group, and hit out at Prime Minister Narendra Modi, alleging an "internal nexus" between him and "his favourite businessman."

Senior Congress leader Jairam Ramesh said the indictment of Gautam Adani and others by the US Securities and Exchange Commission validates his party’s call for a Joint Parliamentary Committee investigation.

The Congress has been pushing for the probe since January 2023, raising concerns over alleged irregularities involving Adani and his business dealings, said Ramesh.

Ramesh referred to the party’s “Hum Adani ke Hain” series, where 100 questions were raised about the alleged scams and the links between Prime Minister Narendra Modi and Gautam Adani.
He noted that the questions remain unanswered, reiterating the need for accountability in the matter.

The US prosecutors have charged Adani with deceiving investors by concealing information about his firm's solar energy project in India, which allegedly involved bribery.

Adani has been charged with securities fraud and conspiracy, according to an indictment unsealed on Wednesday. The case focusses on an agreement between Adani Green Energy Ltd. and another organisation to supply 12 gigawatts of solar power to the Indian government.

'BETRAYAL OF INDIAN INVESTORS'

Congress leader Pawan Khera described the allegations against Gautam Adani and his conglomerate as a “betrayal of Indian investors.”

Taking to X, Khera outlined the US charges, including claims that Adani’s group bribed Indian government officials between 2020 and 2024 to secure contracts. Citing media reports, he also pointed out that Gautam Adani personally met a government official to advance the scheme.

Khera referred to a March 2024 incident where the Adani Group allegedly misled the Bombay Stock Exchange and the National Stock Exchange, calling it a “grave violation of investor trust.”

He further highlighted a March 2023 FBI raid on the premises of Sagar Adani, Gautam Adani’s nephew, where electronic devices were seized as part of the investigation.

'SEBI NOT ABLE TO PROVE ANY CHARGES AGAINST ADANI'

Shiv Sena (UBT) leader Priyanka Chaturvedi criticised central probe agencies following US charges against Gautam Adani and others in an alleged bribery case linked to solar energy contracts.

Chaturvedi raised concerns about corporate governance and regulatory oversight in the country. “They talk about corporate governance, responsibility, and accountability. The industrialists should be asked to follow the rules and regulations, but even the agencies were defending him. The SEBI has not yet been able to prove charges against him,” she said, pointing to what she viewed as failures in ensuring accountability.

'BROUGHT DISREPUTE TO INDIA'

On US charges against Gautam Adani, AAP leader Sanjay Singh called for a probe against the industrialist. He said that the probe should be conducted by an investigation agency under the Supreme Court.

"Adani Group has brought disrepute to India. This is a very serious matter. The PM of India should come forward and answer this. All the pending matters against Adani should be probed by an investigation agency under Supreme Court monitoring, and all the corruption done by him, within and outside the country, should come out before the country and action should be taken against him," he said.

BJP DFENDS

BJP IT cell chief Amit Malviya responded sharply to the Opposition’s criticism regarding allegations involving Adani Green Energy and US-based Azure Power. He pointed out that the charges in the indictment are only allegations and emphasised, “The defendants are presumed innocent unless and until proven guilty.”

Malviya argued that the crux of the case concerns agreements to supply 12 GW of power to the Solar Energy Corporation of India (SECI), contingent on SECI securing power purchase agreements with state electricity distribution companies (SDCs).

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
November 10,2024

Bengaluru: The Karnataka government has warned that disciplinary action will be taken against those officials who change the land mutation records and serve eviction notices to farmers under the Waqf Act.

In a letter, the Revenue Department Principal Secretary Rajender Kumar Kataria reminded all regional commissioners and deputy commissioners in the districts that Chief Minister Siddaramaiah recently had a meeting following complaints about certain land properties being made in favour of the Karnataka Board of Waqfs.

In the meeting it was decided that all the directions issued previously by any government office or authority to change the mutation records has been withdrawn, the letter said.

It added that all the notices served in the past have also been withdrawn and no action should be taken against the farmers who are cultivating on the said land.

On the directions of the chief minister, the previous letters and the latest reminders served on November 7 to the farmers and land owners have been withdraw, the letter said.

"The officials who served reminder-2 despite the chief minister's direction will face appropriate disciplinary action," Kataria said in his letter.

He said he has been instructed to strictly implement the chief minister's direction.

The fresh direction was issued in poll-bound Karnataka, where bypolls to three crucial assembly segments are due on November 13.

Some farmers in Honwad village in Vijayapura in north Karnataka had alleged last month that they were served eviction notices as the Waqf Board claimed rights over it.

Subsequently, complaints started in pouring in from some other parts of the state.

BJP leader Tejasvi Surya on October 25 alleged that Karnataka Waqf Minister B Z Zameer Ahmed Khan directed the deputy commissioners and revenue officials to register lands in favour of the Waqf Board within 15 days, which resulted in confusion.

On Surya's request, the Chairman of the Joint Committee of Parliament on the Waqf (Amendment) Bill, Jagdambika Pal visited Karnataka on November 7 and met farmers in Hubballi, Vijayapura and Belagavi districts who had alleged that their lands were marked as Waqf properties.

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
November 18,2024

Advisors to US President-elect Donald Trump have instructed his allies and associates to refrain from using the inflammatory language they previously employed when discussing issues related to migrants and the deportation of asylum seekers, in a bid to avoid “looking like Nazis.”

US media reports said that Trump’s associates had been asked to stop using the word “camps” to describe potential facilities that would be used to accommodate migrants rounded up in deportation operations across the country.

The reports said the US president-elect’s allies had been ordered to stave off such charged terms as they would bring to mind “Nazis,” and be used against Trump.

“I have received some guidance to avoid terms, like ‘camps,’ that can be twisted and used against the president, yes,” one Trump ally told American monthly magazine Rolling Stone.

“Apparently, some people think it makes us look like Nazis.”

The presidential advisers also cautioned surrogates and allies to keep racist terms, which have dogged Trump’s campaign, out of their remarks.

They said with Trump’s heated rhetoric that used to compare undocumented immigrants to “animals” and his slight that they are “poisoning the blood of our country,” detractors did not need to reach too far to find parallels to Nazi Germany.

Stephen Miller, who Trump tapped to be his deputy chief of staff of policy, specifically used the word “camps” to describe holding facilities that he hoped the military could put together for immigrants.

Tom Homan, who served as the acting director of Immigration and Customs Enforcement and is chosen by Trump to be in charge of the US borders, was no stranger to such language.

“It’s not gonna be a mass sweep of neighborhoods,” he said in an interview earlier this week. “It’s not gonna be building concentration camps. I’ve read it all. It’s ridiculous.”

Becoming a little more forthright about the new government’s aggressive deportation plans, Homan likened the early days of the Trump administration to the initial invasion of Iraq in 2003.

“I got three words for them – shock and awe,” he said. “You’re going to see us take this country back.”

Trump made immigration a central element of his 2024 presidential campaign but unlike his first run, which was mainly focused on building a border wall, he has shifted his attention to interior enforcement and the removal of undocumented immigrants already in the United States.

People close to the US president and his aides are laying the groundwork for expanding detention facilities to fulfill his mass deportation campaign promise.

The businessman-turned-politician deported more than 1.5 million people during his first term.

The figure do not include the millions of people turned away at the border under a Covid-era policy enacted by Trump and used during most of Biden’s term.

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.