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
June 23,2020

New Delhi, Jun 23: In an unexpected development, the pump price of diesel is all set to surpass the petrol price in the capital, making it the most expensive transport fuel for the first time in a long time.

Globally, diesel is priced slightly above petrol prices due to the very nature of the product that has a higher cost of production. But in India, due to the lopsided taxation structure, diesel attracts lesser of the tax between the two auto fuels keeping its prices lower than petrol for last several years.

Diesel is currently priced at Rs 79.40 a litre in the Capital, just 36 paise short of petrol price that is being retailed at Rs 79.76 a litre. Going by the trend of price movement in the two products for the last few days where diesel prices have consistently increased by 50-60 paise per litre while the daily increase in petrol prices have fallen to just 20 paise on Tuesday, it is set to surpass petrol prices in next few days.

"Diesel price movement is sharper in international market and if oil companies follow the global price trend, diesel prices will surpass that of petrol later this week. It will be after many years that this would happen and is expected to sustain for some time unless government changes the tax structure of the petroleum products again," said an oil sector expert from one of the big four audit and advisory firms asking not to be named.

Interestingly, even in India the base price of diesel is expensive than petrol. According to the Indian Oil Corporation (IOC), while the base price of petrol in Delhi currently comes to Rs 22.11 per litre, the same for diesel is higher at Rs 22.93 per litre (effective from June 16, 2020). This has been the case for a long time, but retail price of petrol can be higher than diesel due to central and state taxes.

What has now brought diesel prices to a whisker of petrol prices in the capital is the Delhi government's decision early May to increase the Value Added Tax on diesel from 16.75 per cent to 30 per cent and on petrol from 27 per cent to 30 per cent. This increased the retail price of diesel and petrol in Delhi by Rs 7.10 and Rs 1.67 a litre respectively. With Central taxes on the two products already reaching identical levels, the Delhi governments move hastened price parity between petrol and diesel.

Currently, the Central excise on petrol is Rs 32.98 a litre while that on diesel it is Rs 31.83 a litre. The VAT on petrol in Delhi is Rs 17.71 a litre and that on diesel is Rs 17.60 a litre.

While the movement of retail pricing is being seen with a sigh of relief by vehicle owners whose cars run on petrol, those buying the relatively expensive diesel cars are now repenting on their decision. The development is also being seen with caution by automobile companies who have spent millions to ramp up their facilities for diesel run vehicles. The expectation is that demand for such cars will now fall, causing more damage to companies where sales are already impacted due to persistent economic slowdown and now the spread of COVID-19 pandemic.

"The pricing development would push automobile companies to strategies being followed by companies in the western markets where diesel run cars are not sold on fuel pricing differential, but on overall make and quality that puts them ahead of petrol run cars," the expert quoted earlier.

Yes, but for commercial vehicle sector the rising price of diesel had not been welcomed. In fact, the commercial transport sector had time an again threatened strike against the move to raise fuel prices.

With petrol and diesel retail prices closing, the case for adultering fuel has also gone down much to the relief of vehicle owners.

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News Network
January 31,2020

Wuhan, Jan 31: The World Health Organization declared a global emergency over the new coronavirus, as China reported Friday the death toll had climbed to 213 with nearly 10,000 infections.

The UN health agency based in Geneva had initially downplayed the threat posed by the disease, but revised its risk assessment after crisis talks.

suspended or reduced service to China include British Airways, German flag carrier Lufthansa, American Airlines, KLM and United.

Chinese efforts to halt the virus have included the suspension of classes nationwide and an extension of the Lunar New Year holiday.

All football matches across the country also will be postponed, the Chinese Football Association said on Thursday, including games in the top-tier Chinese Super League.

World stock markets tumbled again Thursday on fears that trouble in the "world's factory" would upset global supply chains and dent profits.

Toyota, IKEA, Starbucks, Tesla, McDonald's and tech giant Foxconn were among the corporate giants temporarily freezing production or closing large numbers of outlets in China.

Volkswagen announced Thursday its China joint-venture plants would not start production again before February 9.

US Federal Reserve Chairman Jerome Powell said the coronavirus posed a fresh risk to the world economy.

Throughout China, signs of paranoia multiplied, with residents of some Beijing residential compounds erecting makeshift barriers to their premises.

In one of many similar photos posted online, a man wearing a surgical mask and brandishing a traditional martial arts weapon squatted on a barricade outside a Chinese village, near a sign saying: "Outsiders forbidden from entering".

The crisis has caused food prices to spike, and the central government on Thursday blamed this partly on overzealous preventive measures, issuing a directive banning any roadblocks or other hindrances to food shipments.

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News Network
February 21,2020

Washington, Feb 21: Days ahead of his India visit, US President Donald Trump on Thursday said the two countries could make a "tremendous" trade deal.

"We're going to India, and we may make a tremendous deal there," Trump said in his commencement address at the Hope for Prisoners Graduation Ceremony in Las Vegas.

Trump, accompanied by First Lady Melania Trump, is scheduled to travel to Ahmedabad, Agra and New Delhi on February 24 and 25.

Ahead of the visit, there have been talks about India and the United States agreeing on a trade package as a precursor to a major trade deal.

During his commencement address, Trump indicated that the talks on this might slowdown if he did not get a good deal.

"Maybe we'll slow down. We'll do it after the election. I think that could happen too. So, we'll see what happens," he said.

"But we're only making deals if they're good deals because we're putting America first. Whether people like it or not, we're putting America first," Trump said.

Bilateral India-US trade in goods and services is about three per cent of the US' world trade.

In a recent report, the Congressional Research Service (CRS) said the trading relationship is more consequential for India -- in 2018 the United States was its second largest goods export market (16.0 per cent share) after the European Union (EU, 17.8 per cent), and third largest goods import supplier (6.3 per cent) after China (14.6 per cent) and the EU 28 (10.2 per cent).

"The Trump Administration takes issue with the US trade deficit with India, and has criticised India for a range of 'unfair' trading practices," the CRS said.

"Indian Prime Minister Modi's first term fell short of many observers' expectations, as India did not move forward with anticipated market opening reforms, and instead increased tariffs and trade restrictions," it said.

"Modi's strong electoral mandate may embolden the Indian government to press ahead with its reform agenda with greater vigour. Slowing economic growth in India raises concerns about its business environment," CRS said.

As per a fact sheet issued by the Council on Foreign Relations (CFR), trade in goods and services between the two countries from 1999 to 2018 surged from $16 billion to $142 billion.

India is now the United States' eighth-largest trading partner in goods and services and is among the world's largest economies.

India's trade with the United States now resembles, in terms of volume, the US' trade with South Korea ($167 billion in 2018) or France ($129 billion), said Alyssa Ayres from CFR.

"The United States for two years now has set out in stone pretty clearly the things that they wanted to see to try to get an agreement, and it's basically then on India's doorstep on whether they want to take those steps," Rick Rossow, Wadhwani Chair in US-India Policy Studies at the Center for Strategic and International Studies think-tank told reporters during a conference call.

"The list of US asks has been pretty static all throughout. Not to say that any of these things are easy for India to do, but the United States to my knowledge didn't change the goalposts just because we now consider India to be a middle-income country. The things that we wanted to see happen to get this trade agreement have been pretty static all throughout, no matter how difficult they are," he said in response to a question.

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