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 17,2020
New Delhi, Jul 17:  Congress leader Rahul Gandhi on Friday said that as India's COVID-19 tally has crossed 10,00,000 mark and issued a warning that by August 10, more than 20,00,000 people may be infected in the country. He called on the government to take concrete steps to control the pandemic.
 
Taking to Twitter, Gandhi marked his earlier tweet from July 14 that stated: "This week the figure will cross 10,00,000 in our country."
"The tally has crossed 10,00,000 mark. If COVID-19 continues to spread at the same speed, by August 10, more than 20,00,000 people will be infected in the country.
 
The government must take concrete, planned steps to stop the epidemic," he tweeted today.
With the highest single-day spike of 32,695 cases and 606 deaths, India's COVID-19 tally on Thursday reached 9,68,876, informed the Union Ministry of Health and Family Welfare on Thursday.
 
The total number of COVID-19 cases includes 3,31,146 active cases, 6,12,815 cured/discharged/migrated and 24,915 deaths. 

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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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News Network
January 30,2020

New Delhi, Jan 30: In a major shift of strategy ahead of the Delhi assembly polls, the Bharatiya Janata Party (BJP) has decided to rope in its senior leaders for massive public rallies.

Its star campaigners like Prime Minister Narendra Modi, Union Home Minister Amit Shah, BJP chief JP Nadda, Uttar Pradesh Chief Minister Yogi Adityanath, and other union ministers would now be addressing massive public rallies in addition to ongoing neighbourhood meetings.

"The big rallies would begin from February 1. While 'Nukkad' meetings will take place till the last day of campaigning, there would be big rallies of the top leadership of the party, " informed a senior party leader.

Sources said the BJP has changed its strategy after the success of its grassroots contact programme as the party wants to consolidate its gains.

"As part of the reworked strategy the BJP has asked its various Mandals to organise public meetings of 10,000-15,000 people in each assembly segment to reach out to the masses," sources added.

While there are two planned for Prime Minister Modi, two have been planned for JDU chief and Bihar Chief Minister Nitish Kumar along with Nadda and Amit Shah. Yogi Aadityanath too would be addressing 12 rallies.

The party is leaving no stone unturned to secure massive gains, which it feels can be converted to victory in the forthcoming polls.

Party sources feel that the relentless campaigning under the guidance of Amit Shah and Nadda has ensured that the morale of party cadre is at an all-time high.

"The neighbourhood meetings have ensured that we have been able to make the people of Delhi aware of the lack of work under the Arvind Kejriwal led Aam Aadmi Party government. They have also been apprised about the anti-national views of the opponents and we think that this is expected to turn the polls into our favour," sources added.

Delhi is scheduled for assembly polls on February 8 and the results for the 70 constituencies will be declared on February 11.

As part of the new strategy, senior leaders like JP Nadda, Amit Shah, Uttar Pradesh chief minister Yogi Adityanath, ministers like Rajnath Singh and Smriti Irani would be holding public rallies in various parts of the city. Several other chief ministers from various BJP ruled states are also expected to be roped in for the campaign.

The strategy for reach out to the masses is an attempt at weakening the hold of AAP on Delhi. With positive feedback coming after the success of the neighbourhood meetings in the past week, the BJP is now looking to increase its potential reach with polls just days away.

Till now the party had deployed 70 union ministers to hold at least one public meeting and one 'padayatra' each as part of the campaign.

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