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
February 21,2020

New Delhi, Feb 21: Global terror financing watchdog FATF on Friday decided continuation of Pakistan in the "Grey List" and warned the country that stern action will be taken if it fails to check flow of money to terror groups like the LeT and the JeM, sources said.

The decision has been taken at the Financial Action Task Force's plenary in Paris.

The FATF decided to continue Pakistani in the "Grey List". The FATF also warned Pakistan that if it doesn't complete a full action plan by June, it could lead to consequences on its businesses, a source said.

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Agencies
January 9,2020

Kashmir, Jan 9: US Ambassador to India Kenneth I Juster along with envoys from 15 other countries arrived in Srinagar on a two-day visit to Jammu and Kashmir on Thursday, the first visit by diplomats since the abrogation of the erstwhile state's special status in August last year.

The Delhi-based envoys arrived in Srinagar by a special chartered flight at Srinagar's technical airport where top officials from the newly carved out union territory received them, officials said.

Later in the day, they would be going to Jammu, the winter capital of the newly created Union Territory, for an overnight stay. They will meet Lt Governor G C Murmu as well as civil society members, they said.

Besides the US, the delegation will include diplomats from Bangladesh, Vietnam, Norway, Maldives, South Korea, Morocco, and Nigeria, among others.

Brazil's envoy Andre Aranha Correa do Lago was also scheduled to visit Jammu and Kashmir. However, he backed out because of his preoccupation here, the officials said on Wednesday.

Envoys from the European Union (EU) countries are understood to have conveyed that they will visit the union territory on a different date and are also believed to have stressed on meeting the three former chief ministers -- Farooq Abdullah, Omar Abdullah and Mehbooba Mufti -- who are under detention.

Officials said envoys of several countries had requested the government for a visit to Kashmir to get a first-hand account of the situation in the Valley following the August 5 decision to abrogate provisions of Article 370 and bifurcate it into two union territories, Jammu and Kashmir, and Ladakh.

This is the second visit of a foreign delegation to Jammu and Kashmir since August 5. Earlier, Delhi-based think tank International Institute for Non-Aligned Studies, a Delhi-based think tank took 23 EU MPs on a two-day visit to assess the situation in the union territory.

The government had distanced itself from the visit with Minister of State for Home G Kishan Reddy informing Parliament that the European parliamentarians were on a "private visit".

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News Network
May 9,2020

May 9: Union Home Minister Amit Shah has said the West Bengal government is not allowing trains with migrant workers to reach the state that may further create hardship for the labourers.

In a letter to West Bengal Chief Minister Mamata Banerjee, Shah said not allowing trains to reach West Bengal is "injustice" to the migrant workers from the state.

Referring to the 'Shramik Special' trains being run by the central government to facilitate transport of migrant workers from different parts of the country to various destinations, the home minister said in the letter that the Centre has facilitated more than two lakh migrants workers to reach home.

Shah said migrant workers from West Bengal are also eager to reach home and the central government is also facilitating the train services.

"But we are not getting expected support from the West Bengal. The state government of West Bengal is not allowing the trains reaching to West Bengal. This is injustice with West Bengal migrant labourers. This will create further hardship for them," Shah wrote.

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