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.

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News Network
June 25,2020

Ottawa, Jun 25: Prime Minister Justin Trudeau took his son out for ice cream on Wednesday in his first family outing since Canada started easing out of its pandemic lockdown.

It was also Saint-Jean-Baptiste Day in Quebec province.

Wearing masks, the Canadian leader and his six-year-old son Hadrien were cheered at Chocolats Favoris in Gatineau, Quebec.

According to a pool report, Trudeau said the shop tapped into a federal emergency wage subsidy and business loan in order to weather the pandemic, and "avoid being frozen out of the frozen treat market."

Hadrien is said to have bounced with excitement, settling on a vanilla cone with a cookie topping while dad bought a vanilla cone dipped in chocolate for himself.

Father and son then headed out to the patio, where they doffed their masks to eat their cones.

Canada's provinces and territories declared states of emergency mid-March, closing schools and non-essential businesses in response to the pandemic.

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January 12,2020

Patna, Jan 12: Prashant Kishor, national vice-president of the Janata Dal (United), a key ally of the BJP-led NDA, has thanked Congress general secretary Priyanka Gandhi and former AICC chief Rahul Gandhi for their support in opposing CAA (Citizenship Amendment Act) and NRC (National Register of Citizens).

Perceived as one of the closest associates of Bihar Chief Minister Nitish Kumar, who is also the party’s national president, PK (as Prashant is fondly called) also assured the two top Congress leaders that the contentious legislation would not be implemented in Bihar where JD (U) is ruling the State with the support of the BJP.

“I join my voice with all to thank #Congress leadership for their formal and unequivocal rejection of #CAA_NRC. Both @rahulgandhi and @priyankagandhi deserve special thanks for their efforts on this count….also would like to reassure to all – CAA/NRC won’t be implemented in Bihar,” tweeted PK on Sunday.

The development assumes significance as a day back, the Congress Working Committee (CWC) meeting, chaired by Sonia Gandhi, had strongly opposed CAA/NRC/NPR as it was aimed at “sinister design of the present regime to divide Indian people into religious lines.”

The latest tweet by PK is also being seen as a rebuff to the BJP, which again recently reiterated that “the BJP should project its own chief ministerial candidate during the 2020 Bihar Assembly elections.”

The JD (U) had taken umbrage over such provocative statements by BJP leaders and asked the saffron camp to rein in its ‘loudmouths’ as BJP chief Amit Shah had already made it clear that the next Assembly polls in Bihar would be fought under the leadership of Nitish.

Of late, PK has been quite vocal about his opposition to the Centre’s policies, particularly the contentious issues of NRC and CAA. Besides, he even dubbed senior BJP leader Sushil Modi as the man who became Bihar’s Deputy Chief Minister due to ‘circumstances’ as the BJP was decisively decimated during the 2015 Assembly elections.

Nitish never reprimanded PK for his jibe against Modi, thereby giving rise to speculations whether Bihar was again heading for a political churning ahead of Assembly polls slated for October this year.

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January 12,2020

Ahmedabad, Jan 12: Union Home Minister Amit Shah on Saturday unveiled over 5.5 lakh postcards written by Ahmedabad residents to Prime Minister Narendra Modi, thanking him for the Citizenship (Amendment) Act.

The postcards were stacked on the dais as Shah addressed a gathering of BJP workers who formed letters `C A A’ in front of him.

The state BJP claimed that the party’s “largest awareness campaign” in support of the CAA had found a place in Limca Book of Records and World Record of India.

“It is not just words but a letter of thanks written from the heart. Our public outreach programme is a reply to the lies being spread against the CAA,” Shah said addressing BJP workers from his former Assembly constituency Naranpura.

The BJP had promised to enact the CAA in its manifesto, he said, asking why the Congress did not oppose it then.

Targeting Rajasthan Chief Minister Ashok Gehlot, Shah said, “Congress has a government in Rajasthan. The Congress party in that state had promised that Hindus and Sikhs from Pakistan would be given citizenship.

“Why do you oppose it when we fulfill the promise made by you?” the Union home minister asked.

“In 2006 and 2009, Ashok Gehlot wrote a letter for the same. We covered Hindus, Sikhs, Parsis, Christians, all of them under the Act, you had only mentioned Hindus and Sikhs,” Shah claimed.

Saying that Prime Minister Narendra Modi, by bringing in the CAA, granted “human rights to lakhs of people”, he asked why opposition was against it.

He challenged “Rahul Baba” (Congress leader Rahul Gandhi), Mamata Banerjee and Arvind Kejriwal to show if any provision of the CAA took away the citizenship of Indian Muslims.

“There is no such provision. Lakhs and crores of people have come to India from Pakistan, Bangladesh to save their religion, their self-respect, to save themselves. Where else will they go?” he asked.

“From the first prime minister of the country Jawaharlal Nehru to the first home minister, first president of the country, and Mahatma Gandhi himself had said that whoever comes to India from Pakistan will be granted citizenship. Hindus, Sikhs, Buddhists and Jains coming from Pakistan have nowhere else to go,” he said.

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sompady
 - 
Sunday, 12 Jan 2020

From this figure its clear that most of BJP mebers are aganst CAA, Becuase its below 0.5% from Indian population.

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