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
May 27,2020

New Delhi, May 27: As per the prediction from the IMD, severe heatwave conditions continued in several parts of north India with Delhi recording the country’s second-highest temperature at 47.6 degrees Celsius. On the other hand, Churu in Rajasthan sizzled at 50 degrees Celsius, reporting the highest temperature in the country. Also Read - Delhi Temperature: Heatwave to Continue, IMD Issues Alert, Mercury Rises to 46 Degrees

In Delhi, the mercury soared to 47.6 degrees Celsius in Palam area and most places recorded their maximum temperatures six notches above normal. The Safdarjung Observatory, which provides representative figures for the city, recorded a maximum of 46 degrees Celsius.

The last time when the mercury at the Safdarjung weather station touched the 46-degrees-Celsius mark was on May 19, 2002.

The IMD said the weather stations at Lodhi Road and Aya Nagar recorded their respective maximum at 45.4 degrees and 46.8 degrees Celsius.

In its earlier forecast, the IMD has said that dust storm and thunderstorm with winds gusting up to 60 kilometres per hour is likely over the National Capital Region on Friday and Saturday.

On the other hand, severe heatwave conditions prevailed in several parts of Rajasthan on Tuesday, with the mercury touching 50 degrees Celsius in Churu district.

The IMD said this is the second-highest maximum temperature recorded in Churu district in the month of May in the last 10 years.

Other areas such as Bikaner, Gangangar, Kota and Jaipur recorded maximum temperatures of 47.4 degrees Celsius, 47 degrees Celsius, 46.5 degrees Celsius and 45 degrees Celsius, respectively.

In the adjoining areas of Chandigarh, the severe heatwave condition continued in Haryana, Punjab with Hisar being the hottest place in the region at 48 degrees Celsius.

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News Network
February 12,2020

New Delhi, Feb 12: The Centre on Wednesday said the NRC data in Assam is safe even though some technical issues were visible and that will be resolved soon.

The Union Home Ministry clarification came in view of reports that data of the final list of the National Register of Citizens has been made offline from its official website.

"The NRC data is safe. Some technical issues are in visibility on cloud. These are being resolved soon," a home ministry spokesperson said.

The data was not available for a couple of days and it created panic in the public, mostly among the people excluded from the list as the rejection certificates were yet to be issued.

NRC State Coordinator Hitesh Dev Sarma accepted that the data has been made offline, but refuted the allegation of any "malafide" intent in it.

The cloud service for the huge set of data was provided by IT firm Wipro and their contract was till October 19 last year. However, this was not renewed by the previous coordinator.

So, the data got offline from December 15 after it was suspended by Wipro, Sarma said.

He said the state coordination committee had decided to do necessary formalities in its meeting on January 30 and wrote to the Wipro during the first week of February.

"Once Wipro makes the data live, it will be available for public. We hope people will be able to access it in the next 2-3 days," Sarma said.

The complete detail of exclusion and inclusion of bonafide Indian citizens in the NRC was uploaded on its official website http://www.nrcassam.nic.in after the final list was published on August 31, 2019.

The final NRC was published by excluding 19,06,657 persons. A total of 3,11,21,004 names were included out of 3,30,27,661 applicants.

After the earlier NRC State Coordinator Prateek Hajela relinquished the charge on November 11 following his transfer to home state Madhya Pradesh on a direction from the Supreme Court, Sarma was appointed in his place on November 9.

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News Network
February 26,2020

Feb 26: Looking out over the world’s largest cricket stadium, the seats jammed with more than 100,000 people, India’s prime minister heaped praise on his American visitor.

“The leadership of President Trump has served humanity,” Prime Minister Narendra Modi said Monday, highlighting Trump’s fight against terrorism and calling his 36-hour visit to India a watershed in India-U.S. relations.

The crowds cheered. Trump beamed.

“The ties between India and the U.S. are no longer just any other partnership,” Modi said. “It is a far greater and closer relationship.”

India, it seems, loves Donald Trump. It seemed obvious from the thousands who turned out to wave as his motorcade snaked through the city of Ahmedabad, and from the tens of thousands who filled the city’s new stadium. It seemed obvious from the hug that Modi gave Trump after he descended from Air Force One, and from the hundreds of billboards proclaiming Trump’s visit.

But it’s not so simple.

Because while Trump is genuinely popular in India, his clamorous and carefully choreographed welcome was also about Asian geopolitics, China’s growing power and a masterful Indian politician who gave his American visitor exactly what he wanted.

Modi “is doing this not necessarily because he loves Trump,” said Tanvi Madan, the director of the India Project at the Brookings Institution in Washington, D.C. “It’s very much about Trump as the leader of the U.S. and recognizing what it is that Trump himself likes.”

Trump likes crowds — big crowds — and the foot soldiers of India’s political parties have long known how to corral enough people to make any politician look popular. In a city like Ahmedabad, the capital of Modi’s home state of Gujarat and the center of his power base, it wouldn’t take much effort to fill a cavernous sports stadium. It was more surprising that a handful of seats remained empty, and that some in the stands had left even before Trump had finished his speech.

For India, good relations with the U.S. are deeply important: They signal that India is a serious global player, an issue that has long been important to New Delhi, and help cement an alliance that both nations see as a counterweight to China’s rise.

“For both countries, their biggest rival is China,” said John Echeverri-Gent, a professor at the University of Virginia whose research often focuses on India. “China is rapidly expanding its presence in the Indian Ocean, which India has long considered its backyard and its exclusive realm for security concerns.”

“It’s very clearly a major concern for both India and the United States,” he said.

Trump isn’t the first U.S. president that Modi has courted. In 2015, then-President Barack Obama was the first American chief guest at India’s Republic Day parade, a powerful symbolic gesture. Obama also got a Modi hug, and the media in both countries were soon writing about the two leaders’ “bromance.”

Trump is popular in India, even if some of that is simply because he’s the U.S. president. A 2019 Pew Research Center poll showed that 56% of Indians had confidence in Trump’s abilities in world affairs, one of only a handful of countries where he has that level of approval. But Obama was also popular: Before he left office, he had 58% approval in world affairs among Indians.

The Pew poll also indicated that Trump’s support was higher among supporters of Modi’s Hindu nationalist party.

That’s not surprising. Both men have fired up their nationalist bases with anti-Muslim rhetoric and government policies, from Trump’s travel bans to Modi’s crackdown in Kashmir, India’s only Muslim-majority state.

And Trump’s Indian support is far from universal. Protests against his trip roiled cities from New Delhi to Hyderabad to the far northeastern city of Gauhati, although those demonstrations were mostly overshadowed by protests over a new Indian citizenship law that Modi backs.

Modi, who is widely popular in India, has faced weeks of protests over the law, which provides fast track naturalization for some foreign-born religious minorities — but not Muslims. While Trump talked about ties with India on Tuesday, Hindus and Muslims fought in violent clashes that left at least 10 people dead over two days.

In some ways, Modi and Trump are powerful echoes of each other.

They have overlapping political styles. Both are populists who see themselves as brash, rule-breaking outsiders who disdain their countries’ traditional elites. Both are seen by their critics as having authoritarian leanings. Both surround themselves with officials who rarely question their decisions.

But are they friends?

Trump says yes. “Really, we feel very strongly about each other,” he said at a New Delhi press briefing.

But many observers aren’t so sure.

“The question is how much of this is real chemistry, as opposed to what I’d call planned chemistry” orchestrated for diplomatic reasons, said Madan. “It’s so hard to know if you’re not in the room.”

Certainly, Modi understands America’s importance to India. While the two countries continue to bicker about trade issues, the prime minister organized a welcome that impressed even India’s news media, which have watched countless choreographed mass political rallies.

“There is no other country for whose leader India would hold such an event, and for which an Indian prime minister would lavish such rhetoric,” the Hindustan Times said in an editorial.

“The spectacle and the sound were worth a thousand agreements.”

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