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
May 11,2020

May 11: Congress leader Rahul Gandhi on Monday said many states were amending labour laws, but the fight against the novel coronavirus pandemic cannot be an excuse to exploit workers, suppress their voice and crush their human rights.

Gandhi said there cannot be any compromise on the basic principles by allowing unsafe workplaces.

"Many states are amending labour laws. We are together fighting against corona, but this cannot be an excuse to crush human rights, allow unsafe workplaces, exploit workers and suppress their voice," he said.

"There cannot be any compromise on these basic principles," he added.

Congress leader Jairam Ramesh also said it would be dangerous and disastrous to loosen labour, land and environment laws in the name of economic revival and stimulus.

"In the name of economic revival and stimulus, it will be dangerous and disastrous to loosen labour, land and environmental laws and regulations as the Modi govt is planning.

"The first steps have already been taken. This is a quack remedy like demonetisation," Ramesh tweeted.

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News Network
January 22,2020

Davos, Jan 22: President Donald Trump has said that the US is watching the developments between India and Pakistan over Kashmir "very closely" and repeated his offer to "help" resolve the longstanding dispute between the two neighbours as he met Prime Minister Imran Khan on the sidelines of the World Economic Forum here in the Swiss ski resort.

Addressing the media with the Pakistan Prime Minister prior to their private meeting on Tuesday, President Trump asserted that trade and borders were both critical points for discussion, while Khan said that for him, Afghanistan was the top priority.

Trump told Khan, whom he referred to as "my friend", that he would speak to Prime Minister Narendra Modi about the ongoing Kashmir issue. The US president is expected to visit India in the coming weeks, marking his first visit after taking up his post in the White House.

"What's going on between Pakistan and India … if we can help, we certainly will be willing to. We have been watching it very closely and it's an honour to be here with my friend," he said.

"The Pakistan-India conflict is a very big issue for us in Pakistan and we expect the US to always play its part in deescalating the tensions, because no other country can," Khan said.

President Trump has repeatedly offered to mediate following India's August 5 decision to revoke the special status to Jammu and Kashmir and bifurcate the state into two Union Territories, evoking strong reaction from Pakistan which has been trying to internationalise the Kashmir issue.

New Delhi has defended the move, saying Jammu and Kashmir is an integral part of India and the issue was strictly internal to the country, and the special status provisions only gave rise to terrorism in Jammu and Kashmir.

"The country took the decision of abrogation of Article 370, which had only given separatism and terrorism to that state," Prime Minister Narendra Modi said at a function in October last year.

This is the third meeting between Trump and Khan since Pakistan premier assumed office in 2018 and it came against the backdrop of Pakistan Foreign Minister Shah Mehmood Qureshi's recent trip to the US, amid reports that the US and Afghan Taliban were close to striking a peace deal.

"There are issues we want to talk about. The main issue is Afghanistan because it concerns the US and Pakistan. Fortunately, we are on the same page. Both of us are interested in peace there and an orderly transition in Afghanistan with talks with Taliban and the government," Khan said.

When a reporter asked Trump if he would visit Pakistan considering he was already set to visit India, the US president said he was meeting the Pakistan premier in Davos.

"Well, we're visiting right now. So we don't really have to. I wanted to say that from a relationship standpoint, we got a great relationship. From the standpoint our two countries, we're getting along very well. I would say we've never been closer with Pakistan the way we're right now. And this is a big statement," Trump said.

Khan left for Switzerland to attend the World Economic Forum and meet the world leaders, including President Trump, on the sidelines of the annual event which kicked off at the ski resort town of Davos on Tuesday.

The four-day summit marks the 50th anniversary of the forum.

A total of 53 heads of State are on the guest list. Nearly 3,000 participants from 118 countries are expected to attend the event during which political leaders, business executives, heads of international organisations and civil society representatives are set to deliberate on contemporary economic, geopolitical, social and environmental issues.

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News Network
June 8,2020

New Delhi, Jun 8: Places of worship on Monday across the country reopened after staying shut since March due to the COVID-19 induced lockdown.

Scores of temples, mosques and gurudwaras were seen opening up keeping in view the Standard Operating Procedure (SOP) issued by Union Home Ministry to prevent coronavirus spread.

As per Ministry of Health guidelines, touching of idols/holy books, choir/singing groups, etc are not allowed.

In Delhi, people gathered at Gauri Shankar Temple in Chandni Chowk to offer prayers. With national capital seeing a rise in coronavirus cases, the devotees were seen wearing masks and taking precautions. People were also seen offering prayers at Kalka Ji Temple.

Several people arrived at Sri Bangla Sahib Gurudwara to offer prayers. Devotees were made to pass through the disinfectant tunnel before entering the Gurdwara in order to prevent the virus.

In Uttar Pradesh, Chief Minister Yogi Adityanath offered prayers at Gorakhnath Temple after state government allowed re-opening of places of worship from today.

Devotees were seen offering prayers at Eidgah Mosque in Lucknow.

Devotees also offered prayers at Shree Dodda Ganapathi Temple in Basavanagudi, Bengaluru.

Hanuman Garhi Temple in Ayodhya also reopened on Monday.

Prayers were offered at Durga Mata Mandir near Jagraon Bridge in Ludhiana, as the government has allowed reopening of places of worship.

Although religious places have opened in most of the states, however, there are some states which are yet to do so.

Preparations related to Yatra of Char Dhams including Badrinath have been completed, however, local representative of the areas from where the routes of this yatra pass have requested the government to not allow the commencement of the Yatra.

Based on the assessment of the situation, the Odisha Government ordered that all religious places/places of worship for the public will continue to remain closed till June 30.

Earlier, the Union Ministry of Home Affairs (MHA) said that religious places and places of worship for public, hotels, restaurants and other hospitality services along with shopping malls will be permitted to open from June 8.

However, these facilities will not be able to resume operations inside containment zones designated by authorities in states.

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