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 30,2020

New Delhi, May 30: As the NDA government completes one year of its second term, Prime Minister Narendra Modi listed several achievements and initiatives taken by his government in the past year in an audio message addressed to the people of the country.

PM Modi said, "This day last year began a golden chapter in the history of Indian democracy. It was after several decades that the people of the country voted back a full-term government with a full majority."

"Your role has played a pivotal role in creating this chapter. In such a situation, this day is an opportunity for me to bow to the citizens of the country and the democratic ethos of our nation," said PM Modi.

"Had the situation been normal, I would have got the chance to meet you. Your affection and active support in the past year have given me new energy and inspiration. During this period, the way you have shown the collective powers of democracy, they have become an example for the whole world," he added.

PM Modi talked about several important initiatives taken by his government in 2014 as well as India's demonstration of its mettle through the surgical strike and airstrike.

"Six years ago in 2014, the people of this country voted to bring a major change in the country. You voted to change the country's policy and manner. During that tenure where surgical strike and airstrike took place, one rank one pension, one nation one tax GST, and better MSP for farmers were also fulfilled. That period was dedicated to fulfilling many needs of the country."

He further said that in these years the country has seen systems coming out of the quagmire of inertia and corruption. The country has seen governance change to make life easier for the poor.

"During that period, India's stature in the world increased. By opening bank accounts of poor people, by giving them gas connections, by providing free electricity connections, by building washrooms, by building houses, the dignity of the poor has also been increased," said PM Modi.

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Agencies
August 2,2020

New Delhi, Aug 2: India's COVID-19 tally crossed the 17 lakh mark with 54,736 positive cases and 853 deaths reported in the last 24 hours.

"The total COVID-19 cases stand at 17,50,724 including 5,67,730 active cases, 11,45,630 cured/discharged/migrated and 37,364 deaths," said the Union Health and Family Welfare Ministry.

As per the data provided by the Health Ministry, Maharashtra -- the worst affected state from the infection -- has a total of 1,49,214 active cases and 15,316 deaths. A total of 4,31,719 coronavirus cases have been recorded in the state up to Saturday, as per the state health department.

Tamil Nadu has a total of 60,580 active cases and 4,034 deaths.

In Delhi, the total cases rose to 1,36,716, including 1,22,131 recovered/discharged/migrated cases and 3,989 deaths. There are 10,596 active cases in the national capital.

The total number of COVID-19 samples tested up to August 1 is 1,98,21,831 including 4,63,172 samples tested yesterday, said the Indian Council of Medical Research (ICMR) on Sunday.

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News Network
February 5,2020

Mumbai, Feb 5: Maharashtra Chief Minister Uddhav Thackeray on Wednesday said there was no need to fear the Citizenship Amendment Act, but asserted his government will not allow the proposed National Register of Citizens to be implemented as it would "impact people of all religions".

Throwing out Bangladeshi and Pakistani migrants out of the country was an old demand of the Shiv Sena, the chief minister said in the third and concluding part of his interview to party mouthpiece 'Saamana'.

"I can confidentally say the Citizenship (Amendment) Act (CAA) is not meant to throw Indian citizens out of the country. But, the National Register of Citizens (NRC) is going to impact Hindus as well," the Sena president said.

India has the right to know the number of minorities from neighbouring nations who applied for Indian citizenship after being persecuted in their home countries, he said.

"When they come here, will they get homes under the 'Pradhan Mantri Awas Yojana'? What about employment and education of their children? All these issues are important and we have the right to know," hesaid in the interview to Saamana's executive editor and Sena MP Sanjay Raut.

"As chief minister, I should know where will these people be relocated in my state. Our own people don't have adequate housing. Will these people go to Delhi, Bengaluru or Kashmir, since Article 370 is now scrapped?" he wondered.

Several Kashmiri Pandit families are staying like refugees in their own country. The CAA is not to throw citizens out of the country, Thackeray said.

"However, the NRC will impact Hindus and Muslims and the state government will not allow it to be implemented," he asserted.

Under the NRC, all citizens will have to prove their citizenship. In Assam, 19 lakh people could not prove their citizenship. Of these, 14 lakh are Hindus, Thackeray claimed.

In a veiled attack on his cousin and MNS chief Raj Thackeray, who will lead a rally in support of the CAA and NRC in Mumbai on February 9, the chief minister said the NRC is not yet a reality and there is no need for a 'morcha' in support of or against it.

"If the NRC is enforced, those who are supporting it will also be affected," he said.

Under the NRC, even Hindus will have to prove their citizenship. "I will not allow the law to be enacted. Whether I am chief minister or not, I will not allow injustice to anybody," he said.

The chief minister also took a veiled dig at the Centre's decision to give the Padma Shri award to Pakistani-origin musician Adnan Sami.

"A migrant is a migrant. You can't honour him with the Padma award. Throwing out illegal migrants was the stand of (late Shiv Sena supremo) Balasaheb Thackeray," he said without naming anyone.

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