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
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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News Network
June 19,2020

Kolkata, Jun 19: The nationwide clamour for boycott of Chinese goods is getting louder amid the Ladakh face-off, with traders urging the Centre to direct e-commerce firms to restrict the sale of items from the Dragonland, which imports products worth USD 74 billion to India annually.

Of the total import from China, retail traders sell goods worth around USD 17 billion, mostly comprising toys, household items, mobiles, electric and electronic goods and cosmetics among other things, which could possibly be replaced by Indian products, a national trading body said.

"We, at 'Federation of All India Vyapar Mandal', are advising our members to clear their stocks of Chinese products and refrain from placing fresh orders. We are also requesting the government to restrict e-commerce companies from selling Chinese products," V K Bansal, the association's general secretary, told PTI.

Sushil Poddar, the president of the Confederation of West Bengal Traders Association, said its members have been told to shun trading in Chinese goods as much as possible.

Another national traders' body, The Confederation of All India Traders (CAIT), has decided to step up its movement against the boycott of Chinese goods, under its campaign 'Bhartiya Samaan-Hamara Abhimaan'.

It released a list of over 450 broad categories of commodities, comprising 3,000 Chinese products.

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News Network
June 26,2020

New Delhi, Jun 26: With the highest single-day spike of 17,296 COVID-19 cases reported in the last 24 hours, India's COVID-19 count reached 4,90,401 on Friday, said the Union Ministry of Health and Family Welfare (MoHFW).

The country also saw 407 deaths in the last 24 hours, which pushed the death toll to 15,301.

The total number of cases includes 1,89,463 active cases, 2,85,637cured/discharged/migrated cases, as per the MoHFW.

According to the Indian Council of Medical Research (ICMR), the total number of samples tested up to June 25 is 77,76,228; the number of samples tested on 25 June is 2,15,446.

Maharashtra remains the worst-affected state in the country with 1,47,741 cases. The active cases in the state are 63,357. The number of people cured or discharged stands at 77,453 while the death toll is at 6,931.

Delhi has so far reported 73,780 cases. The active cases in the national capital stood at 26,586. While the cured and discharged numbers stood at 44,765. The death toll in the city is 2,429.

Tamil Nadu has so far reported 70,977. With active cases at 30,067 and the number of cured or discharged at 39,999, while the death toll stood at 911.

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