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 1,2020

Feb 1: The Congress on Saturday expressed hope that the Union Budget would provide relief to the salaried class through tax cuts and invest in rural India besides providing a healing touch to the common man and industry facing “hardship” since demonetisation.

Congress chief spokesperson Randeep Surjewala said the last budget led to crashing consumption levels, soaring unemployment and falling GDP. “Budget 2019= Consumption crashed, Unemployment soared, Farm distress surged, Incomes declined, Investments slumped, Public spending fell, GDP nose dived!,” Surjewala tweeted. “Yet, Modiji gave Corporate Tax Cuts of Rs 1,45,000 crore. Let Budget 2020 give tax cuts to Salaried Class and invest in Rural India,” he said

Rajasthan Chief Minister Ashok Gehlot hoped the budget fulfils expectations of the common people. “Budget 2020 is the time for NDA government to provide a healing touch to common people and industries facing hardships since noteban. Hope the budget fulfils expectations of common people and provide relief across sections,” Gehlot said.

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News Network
May 10,2020

New Delhi, May 10: The Delhi government has asked district magistrates to release 2,446 Tablighi Jamaat members from quarantine centres and ensure that they do not stay in any other place except their homes.

The district magistrates will explore the possibility of sending those Tablighi members, who belong to other states, in buses to their designated places in accordance with social distancing norms and other protocols, DDMA Special CEO K S Meena said in a letter to deputy commissioners (administration).

As man as 567 foreign attendees of the congregation held in Delhi's Nizamuddin area in March, will be handed over to the police, Meena said.

"They (foreign Jamaat attendees) will be handed over to police in connection with several violations like visa violation," a government official said on Saturday.

Delhi Home Minister Satyendar Jain had recently ordered the release of Tablighi members who have completed their required quarantine period in centres and tested negative for COVID-19.

"Out of such people belonging to Delhi, who could be released as per prescribed guidelines should be issued passes to travel from the quarantine centres.

"Under no circumstances, the aforesaid persons should be allowed to stay in any other places including mosques," Meena said in the letter.

In respect of those Tablighi members belonging to other states, it should be ensured by the nodal officer and the area ACP that such people reach their place of residence, he also said.

"The DC should also inform the respective resident commissioner of their states in respect of each and every movement of such persons from Delhi," the Delhi Disaster Management Authority (DDMA) Special CEO said.

Thousands of Tablighi Jamaat members had been taken out of its Markaz (centre) in Nizamuddin, where they had gathered for a religious congregation, and quarantined as the area became a major hotspot after a number of members tested positive for coronavirus.

On March 31, the Delhi Police's Crime Branch had lodged an FIR against seven people, including Maulana Saad Kandhalvi, on a complaint by Station House Officer, Nizamuddin, for holding the congregation.

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News Network
February 2,2020

New Delhi, Feb 2: The Congress on Sunday released its manifesto for Delhi polls, promising to implement unemployment allowance of Rs 5,000-7,500 per month and cashback schemes for water and power consumers, if voted to power.

Presenting the manifesto, Delhi Congress chief Subhash Chopra said the party will provide free power up to 300 unit per month.

The manifesto also committed to spend 25 per cent budget each year on fighting pollution and improving transport facilities.

An unemployment allowance of Rs 5,000 for graduates and Rs 7,500 for post graduates per month will be provided under the Yuva Swabhiman Yojna, he said.

The Congress will launch flagship cashback schemes for power and water supply to benefit consumers saving these resources. The party, if voted to power, will open 100 Indira Canteens to provide subsidised meals at Rs 15, Chopra said.

The Congress will challenge the Citizenship Amendment Act (CAA) in the Supreme Court and demand the Centre to withdraw the law. The party will also not implement the National Register of Citizens (NRC) and the existing form of the National Population Register (NPR), if voted to power in Delhi.

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