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
February 3,2020

Mumbai, Feb 3: Maharashtra Chief Minister Uddhav Thackeray, whose party severed ties with the BJP after the state elections, on Monday said that if somebody breaks a promise, "pain and anger is obvious".

"No, I did not get any shock," Thackeray said in an interview with Shiv Sena mouthpiece Saamana while talking about forming an alliance with NCP and Congress, and becoming the Maharashtra Chief Minister.

"I am a son of Shiv Sena Pramukh (Balasaheb Thackeray), several people tried to give a shock to me but they didn't succeed. This is a field where you have to accept in the beginning that there will be a bit pushing and pulling," Thackeray said.

He added that accepting the Chief Minister's post was not a shock for him and neither was it his "dream at any point of time".

"But I can say one thing for sure that I had decided to go to any level to fulfil the promise which I made to Balasaheb Thackeray. I want to further clear it that me becoming Chief Minister is not the fulfilling of the promise made to Shiv Sena Pramukh but it's just a step towards that. I will fulfil every promise which I made to my father," Uddhav Thackeray said.

"There are several types of shock. Did people like it or not, it is the important part. I have spoken on this issue (alliance with NCP and Congress) several times and even people have understood this. Making promises and keeping them are two different things. If someone breaks a promise, pain and anger is obvious," he added.

The Chief Minister said that he does not know if BJP "has come out their shock till now or not."

"But I have to say if they had kept their promise what would have happened, what a big deal had I asked for? Did I ask for stars and moon? I only asked for what was decided before Lok Sabha polls, when we decided seat distribution," he said.

He further said, "Maharashtra and the country are watching (who betrayed/shocked whom), I don't need to say much on this."

Soon after the Assembly election results, Shiv Sena demanded rotation of the chief minister's post and equal power-sharing in the state government, which was rejected by then ally BJP. The weeks of political stalemate led to the imposition of President's rule on November 13.

Firm on its demands, Sena, the second-largest party in the state, did not hesitate to cobble up with the ideological opponents -- NCP and Congress -- and was given the chief minister's post.

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Agencies
February 26,2020

Unnao, Feb 26: Ever heard of someone wishing a 'bright future' for the dead? In a bizarre incident in Uttar Pradesh's Unnao district, a village head issued a death certificate with the wish for an elderly man who had died last month.

The incident took place in the Sirwariya village in Asoha block where an elderly person Laxmi Shankar died after a prolonged illness on January 22.

His son went to the village head Babulal and requested him to issue a death certificate that he needed for some financial transactions.

Babulal not only issued the death certificate, but also 'wished' 'a bright future for the deceased' on the document.

The village head wrote in the death certificate -- "Main inke ujjwal bhavishya ki kaamna karta hoon (I wish him a bright future)."

The letter went viral on the social media on Monday after which the village head apologised for the error and issued a new death certificate.

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News Network
February 3,2020

New Delhi, Feb 3: In the third such incident inside of a week, two unidentified persons opened fire outside Gate No. 5 of Jamia Millia Islamia on Sunday night, the Jamia Coordination Committee (JCC) said.

A statement issued by the committee, a group comprising students and alumni of the university formed to protest against the Citizenship Amendment Act, said the attackers were on a red Rcooty.

No one was injured in the attack. One of the miscreants was wearing a red jacket, the statement said.

"Firing has taken place at Gate No.5 of Jamia Millia Islamia right now by two unidentified persons. As per report, one of them was wearing a red jacket and driving a red Scooty having vehicle no. 1532 or 1534," the statement said.

Police said they were verifying the JCC's claims.

Asim Mohammed Khan, former Congress MLA from Okhla, said the incident occurred around 11.30 pm. "We heard the gunshot. That is when we stepped out to see and the two men left on a Scooty," a student said.

"We have taken down the vehicle number and called police," he added.

This is the third firing incident in the Jamia Nagar area in a week.

On Thursday, a minor fired at anti-CAA protesters marching towards Rajghat, injuring a student.

Two days later, a 25-year-old fired two rounds in air in Shaheen Bagh in Jamia Nagar. No one was hurt in the incident.

The incident on Sunday night triggered panic in the area. A police vehicle had reached the spot after the incident but was chased away by angry students.

Hundreds of students and locals gathered outside the university.

Many raised slogans against the Delhi Police. They also staged a dharna outside the Jamia Nagar police station.

Shezad Ahmed, a JMI student and resident of Zakir Nagar, said they were not even allowed to protest peacefully.

"We are not going to be deterred by such incidents. We will continue with our protest," he added.

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