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
June 5,2020

New Delhi, Jun 5: On World Environment Day, Prime Minister Narendra Modi on Friday urged citizens to ensure that the flora and fauna thrive and take a pledge to preserve our planet's rich biodiversity.

"On #WorldEnvironmentDay, we reiterate our pledge to preserve our planet's rich biodiversity. Let us collectively do whatever possible to ensure the flora and fauna with whom we share the Earth thrive. May we leave an even better planet for the coming generations," the Prime Minister tweeted.

He also shared a clip from his last 'Mann Ki Baat' programme where he mentioned about conservation of rainwater and protecting the rich diversity of nature.

"On June 5, the entire world will celebrate 'World Environment Day'. The theme for this year's 'World Environment Day' is bio-diversity. This theme is especially pertinent in the current circumstances. During lockdown in the last few weeks the pace of life may have slowed down a bit but it has also given us an opportunity to introspect upon the rich diversity of nature or biodiversity around us," the Prime Minister had said.

"Much of the avian fauna had sort of disappeared due to sound and air pollution, and now after years people can once again listen to their melodic chirping in their homes," he said.

The Prime Minister also said that water conservation, in particular the conservation of rainwater, is essential and exhorted everyone to strive for saving rainwater in the upcoming monsoons.

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coastaldigest.com news network
June 17,2020

Prime Minister Narendra Modi, who had maintained silence on Chinese aggression and massacre of Indian in eastern Ladakh, now issued a statement saying ‘India wants peace’. He added that India is capable of giving a befitting reply if provoked. 

The prime minister started his meeting with chief ministers on the Covid-19 with a two-minute silence as a tribute to the 20 soldiers who were killed in action in Galwan Valley this week. As he spoke, it became clear that the message was aimed not just at reassuring the nation but also delivering a sharp message to Beijing.

“I would like to assure the nation that the sacrifice of our jawans will not be in vain. For us, the unity and sovereignty of the country is the most important,” PM Modi said. Home minister Amit Shah and defence minister Rajnath Singh were also present in the meeting.

Over twenty Indian soldiers were killed in the violent face-off which took place in Eastern Ladakh on Monday. The troops fought each other with fists and rocks. After the clash, the two sides “disengaged” from the area where the fighting happened, the Indian army statement said. A news agency quoting sources said four Indian soldiers are in critical condition after the face-off.

Defence minister Rajnath Singh mourned the death of 20 Indian soldiers. “The loss of soldiers in Galwan is deeply disturbing and painful. Our soldiers displayed exemplary courage and valour in the line of duty and sacrificed their lives in the highest traditions of the Indian Army,” he said in a statement.

“The Nation will never forget their bravery and sacrifice. My heart goes out to the families of the fallen soldiers. The nation stand shoulder to shoulder with them in this difficult hour. We are proud of the bravery and courage of India’s bravehearts,” the minister further said in the statement posted on Twitter.

These are the first Indian casualties in a border skirmish with PLA since October 1975 when Chinese troops ambushed an Indian patrol in Arunachal Pradesh’s Tulung La sector and shot four soldiers dead.

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Agencies
June 22,2020

New delhi, Jun 22: As consumer sentiment runs high amid growing chorus for boycotting Chinese goods in the country, the fluid market situation offers new opportunities for various smartphone makers, especially the non-Chinese ones like Samsung, Apple, Nokia, Asus and others, to realign their strategies and regain the lost market share in the face of fierce Chinese competition.

The challenge here would be not to look "opportunistic" and leverage the current explosive situation on just riding on the anti-Chinese sentiment but to offer real challenges in the form of top-end devices with solid internals at affordable price points, feel industry experts.

"The current market conditions in India are fluid and open up new opportunities for smartphone original equipment manufacturers (OEMs) to focus and leverage," Prabhu Ram, Head-Industry Intelligence Group, CyberMedia Research (CMR), told IANS.

In the first quarter (January-March) this year, Samsung's shipments were driven by its upgraded A and M series (A51, A20s, A30s, and M30s).

According to Counterpoint Research, Samsung managed to hold third position in Q1 2020 due to launches across several price tiers, especially in the affordable premium segment (S10 Lite, Note 10 Lite).

The South Korean smartphone maker last week announced a Rs 4,000 price drop on its popular Galaxy Note10 Lite smartphone that will now cost Rs 37,999 (6GB variant).

Earlier this month, Samsung launched two new smartphones, Galaxy M11 and Galaxy M01, with powerful batteries under Rs 15,000 in India.

Galaxy M11 comes in two variants. The 3GB+32GB will be priced at Rs 10,999 while the higher 4GB+64GB variant will be available for Rs 12,999.

Samsung has also launched an affordable Galaxy A21s smartphone with quad-camera system and 5,000mAh battery at a starting price of Rs 16,499.

Also read: Boycott China? OnePlus 8 Pro sold out within minutes of going on sale

On the other hand, Apple grew a strong 78 per cent YoY driven by strong shipments of iPhone 11 and multiple discounts on platforms like Flipkart and Amazon in Q1, according to Counterpoint.

Apple has also brought its cheapest yet powerful new iPhone SE that costs Rs 38,900 (64GB) in India with a special offer from HDFC Bank. The new iPhone SE is powered by the Apple-designed A13 Bionic, the fastest chip in a smartphone and features the best single-camera system ever in an iPhone.

According to Tarun Pathak, Associate Director, Counterpoint Research, consumer sentiments are running high and a section of users will look for alternatives, benefitting global and Indian brands.

"However, we do not think non-Chinese brands will run aggressive campaigns based on the situation as it might look like being opportunistic," Pathak told media.

It may actually let brands of Chinese origin try to run aggressive campaigns on their presence and scale.

"Some of these Chinese brands have been active in scaling up local value addition, creating jobs and investing in research and development," Pathak noted.

On Saturday, market leader Xiaomi said that it is "more Indian" than any other smartphone brand.

The company's India head Manu Kumar Jain said that the company's mobile phone R&D centre and product team is in India, it employs 50,000 people in the country, the entire leadership team is Indian and that the company pays its taxes in India.

Earlier, Realme India CEO Madhav Sheth who is also very active on social media said that Realme is an Indian startup.

In his latest episode of Ask Madhav' series on YouTube, Sheth said: "I can proudly say Realme is an Indian startup, which is now a global MNC (multinational corporation)".

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