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
January 17,2020

New Delhi, Jan 17: E-commerce major Amazon on Friday said it plans to create one million new jobs in India over the next five years through investments in technology, infrastructure and its logistics network.

These jobs are in addition to the seven lakh jobs Amazon's investments have enabled over the last six years in the country.

"Amazon plans to create one million new jobs in India by 2025," the company said in a statement, adding that the jobs - created both directly and indirectly - will be across industries, including information technology, skill development, content creation, retail, logistics, and manufacturing.

Amazon.com Inc chief Jeff Bezos had on Wednesday announced USD 1 billion (over Rs 7,000 crore) investment in India to help bring small and medium businesses online and committed to exporting USD 10 billion worth of India-made goods by 2025.

"We are investing to create a million new jobs here in India over the next five years," Bezos said.

"We’ve seen huge contributions from our employees, extraordinary creativity from the small businesses we've partnered with, and great enthusiasm from the customers who shop with us—and we’re excited about what lies ahead," Bezos added.

India has prioritised job creation and skilling initiatives – including the training of more than 400 million people by 2022 – in rural and urban areas.

"Amazon’s job creation commitment and investment in traders and micro, small and medium enterprises (MSMEs) complement this social inclusion and social mobility efforts by creating more opportunities for people in India to find employment, build skills, and expand entrepreneurship opportunities," the statement said.

The new investments will help to hire talent to fill roles across Amazon in India, including software development engineering, cloud computing, content creation, and customer support.

Since 2014, Amazon has grown its employee base more than four times, and last year inaugurated its new campus building in Hyderabad – Amazon’s first fully-owned campus outside the United States and the largest building globally in terms of employees (15,000) and space (9.5 acres).

The investments will also help in expanding growth opportunities for the more than 5,50,000 traders and micro, small, and medium-sized businesses – including local shops – through programs like Saheli, Karigar, and “I Have Space”.

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News Network
January 30,2020

New Delhi, Jan 30: Tension spiralled in Jamia Nagar on Thursday after a man fired a pistol at a group of anti-CAA protesters, injuring a Jamia Millia Islamia student before walking away while waving the firearm above his head and shouting "Yeh lo aazadi" amid heavy police presence in the area.

Massive protests erupted in the area after the incident with hundreds of agitated people gathering near the university, breaking barricades and clashing with police personnel.

The man, who identified himself as "Rambhakt Gopal", was subsequently overpowered by police and detained. He was taken into custody and was being interrogated, police said.

The entire drama, which triggered panic in the area, was captured by television cameras that showed the man in light coloured pants and a dark jacket, walking away on an empty road barricaded by police, turning around and shouting at the protesters in Hindi, "Here, take this freedom."

The gunman went live on Facebook before the brandishing the gun. Police said they were verifying whether it is his real name.

Before the attack, the man also put out messages on Facebook stating "Shaheen Bhag Khel Khatam" (Run Shaheen, the game is over). Another message stated, "Please wrap me in saffron in my last journey with slogans of Jai Shri Ram". His Facebook profile was deleted after screenshots of his posts were circulated widely on social media platforms.

Several students recapped how their peaceful march on Gandhi's death anniversary became violent.

"We were moving towards the Holy Family Hospital where the police had raised barricades. Suddenly, a gun-wielding man came out and opened fire. One bullet hit my friend's hand," Aamna Asif, a student of economics at the university, told PTI.

She said her friend, Shadab Farooq, a mass communication student, was trying to calm the attacker but he shot at him injuring his left hand.

Farooq, who belongs to Kashmir, was taken to the AIIMS Trauma Centre.

Ragibh Naushad, an LLB student at the university, said, "The Jamia Coordination Committee organised a march to pay homage to Gandhi ji on his death anniversary. It started at 12 noon from Gate number 7, but police denied the permission and stopped the march near the Holy Family hospital.

"A man named Gopal, came there and started brandishing a weapon and later shot a round. He was also chanting pro-CAA slogans."

The incident led to panic in the area.

Khalid Hassan, a JMI alumnus, said initially many were not sure whether it was a gunshot or a tyre burst.

There was heavy police and media presence when the incident took place.

The students were heading from Jamia to Mahatma Gandhi's memorial Rajghat. The march was stopped at the Holy Family Hospital near the university.

Chinmoy Biswal, DCP (southeast), said the students wanted to take out a march from Jamia to Rajghat but were denied permission.

"They were being repeatedly told that the protest should be carried out peacefully. We had barricaded the road just before the Holy Family hospital. Meanwhile, a person was seen in the crowd who waved something which appeared to be a weapon."

"We have detained him and are interrogating him. One person has also been injured," Biswal said.

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News Network
January 28,2020

Mumbai, Jan 28: Flag carrier Air India has kept one of its 423-seater jumbo planes ready in Mumbai for the evacuation of Indian citizens from Wuhan in China in the wake of the coronavirus outbreak in that country, an official source said on Tuesday.

The airline is awaiting necessary approvals from the ministries of external affairs and health to operate the special flight, the source said. The health ministry's nod is required because the operating crew has to fly in a virus outbreak territory.

"We have kept a Boeing 747-400 ready in Mumbai to operate an evacuation flight to China whenever we get a go ahead from the government," the source said.

Some 250 Indians are to be evacuated.

At a meeting of top secretaries called by the cabinet secretary on Monday, the government decided to be prepared for possible evacuation of Indian nationals in Wuhan.

Accordingly, Ministry of External Affairs will make a request to the Chinese authorities for evacuation of Indian nationals, mostly students, stuck in Wuhan city. The Ministry of Civil Aviation and Ministry of Health will make arrangements for transport and quarantine facilities respectively, an official release said on Monday.

Wuhan along 12 other cities have been completely sealed by the Chinese authorities to stop the virus from spreading. The death toll climbed to 80 with 2,744 confirmed cases.

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