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
July 1,2020

Washington, Jul 1: The United States has approved four coronavirus vaccine candidates for clinical trials, Food and Drug Administration (FDA) head Stephen Hahn told reporters.

"Four vaccines have been approved for moving into clinical trials... and another six are in the pipeline for us to review," Hahn said during a press briefing on Tuesday.

The US Administration launched in May Operation Warp Speed, a joint project of Health and Defense Departments, which aims to deliver 300 million doses of a vaccine for COVID-19 by January 2021.

The country's top pandemics expert Anthony Fauci warned on Tuesday, however, that there is no certainty the United States will be able to develop a vaccine against COVID-19 that works and will be safe.

Data on vaccine effectiveness, he added, may be available in the winter or early next year.

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News Network
January 1,2020

New Delhi, Jan 1: Union Minister Prakash Javadekar launched a scathing attack on the Aam Aadmi Party and the Congress for allegedly inciting violence in Delhi against the Citizenship (Amendment) Act. Mr Javadekar said the violence over the amended citizenship law that broke out in areas like Jamia Nagar, Seelampur and Jama Masjid "cannot be forgiven".

"In Jamia, the Congress' Asib Khan and AAP's Amanatullah Khan delivered inciting speeches. They spread disinformation. The law is to give citizenship to people and not take citizenship away," Mr Javadekar told reporters.

He said the people of India understand the plans of the Congress and the AAP and both parties should apologise.

"We will bring out the truth. The fight is between anarchists and those who oppose them. Our agenda would be wholesome development of Delhi. The AAP strangulated municipal corporations' attempt on development. Rs 900 crore was not given. Today, the people of Delhi are surprised that the AAP slept through all these 4.5 years and in the remaining six months they have launched schemes," Mr Javadekar said.

"The work is done by someone else and the credit is taken by a different individual," the Union Minister said, referring to allegations that the government led by Chief Minister Arvind Kejriwal took credit for work done by BJP-ruled municipal agencies.

"Who did fogging in dengue season? Our corporations organised an awareness drive against water accumulation and dengue cases went down. During corporation polls, Kejriwal said don't choose BJP as dengue will claim lives. Now he is also claiming credit for decrease in dengue cases because of the work done by these corporations," Mr Javadekar said.

"I am an environment minister. We worked on pollution control. There is no limit to their (AAP's) lies. About unauthorised colonies, the AAP says we have not regularised it. We made a law signed by the President, yet they spread lies," Mr Javadekar said.

The election in Delhi will be held before the end of February.

Comments

Angry Indian
 - 
Wednesday, 1 Jan 2020

Wash you face with cow urine !!!

sorry sorry with DOG URINE...

you will be enlightened...

 

get lost moron...from wher u came....rat hole or A@@ hole

Fairman
 - 
Wednesday, 1 Jan 2020

Don’t pollute Delhi. Leave them alone.

Every citizen including your own BJP minded people all are very happy with Kerjrival and Aam Admi Party.

 

Every citizen in Delhi are very very happy.

For God sake leave alone, don’t disturb them as spoiled in other parts of the country.

 

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News Network
February 17,2020

New Delhi, Feb 17: Four death row convicts in the 2012 Nirbhaya gang rape and murder will be hanged on March 3 at 6 am a Delhi court said on Monday.

The Patiala House Court on Monday issued fresh death warrants against four convicts while hearing a petition by the state and Nirbhaya's parents.

Earlier, Delhi High Court on February 5 granted a week's time to the four convicts to avail of all legal remedies available to them and said that the convicts cannot be hanged separately since they were convicted for the same crime.

A Delhi Court had earlier issued a death warrant against the four convicts -- Vinay Sharma, Akshay Thakur, Pawan Gupta, and Mukesh Singh -- on January 7 and they were scheduled to be executed on January 22 at Tihar Jail. Later, the execution was suspended indefinitely by a Delhi court.

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