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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Agencies
March 1,2020

Washington, Mar 1: Beginning April 1, Indians wishing to immigrate to America will now have to pay an additional $50,000 for the EB-5 or the US investor visa, a media report said.

Although, this additional tax would impact all visa categories, it will predominantly create a barrier for people investing in the EB-5 visa programme, the American Bazaar daily said in the report on Friday.

In 2019, the EB-5 investor visa programme, for the first time since the 1990's, increased the minimum investment amount to $900,000.

With this increase in minimum investment, the new 5 per cent additional tax would mean that applicants would have to pay the extra $50,000, when they move money to an escrow account in the US to fulfil their application criterion.

"The changes to the tax on remittances is a reminder to Indians to carefully plan their tax position before making the move to the US," the American Bazaar quoted Mark Davies, Global Chairman, Davies & Associates LLC, as saying.

"People seeking to emigrate who do not wish to pay this tax at source and rather account for it later may wish to move their money ahead of the new rules coming into effect.

"It is possible to pre-emptively move money into an escrow account in the US until such a time as they are ready to proceed with emigration process," he added.

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News Network
January 10,2020

Mumbai, Jan 10: India’s oil demand growth is set to overtake China by mid-2020s, priming the country for more refinery investment but making it more vulnerable to supply disruption in the Middle East, the International Energy Agency (IEA) said on Friday.

India’s oil demand is expected to reach 6 million barrels per day (bpd) by 2024 from 4.4 million bpd in 2017, but its domestic production is expected to rise only marginally, making the country more reliant on crude imports and more vulnerable to supply disruption in the Middle East, the agency said.

China’s demand growth is likely to be slightly lower than that of India by the mid-2020s, as per IEA’s China estimates given in November, but the gap would slowly become bigger thereafter.

“Indian economy is and will become even more exposed to risks of supply disruptions, geopolitical uncertainties and the volatility of oil prices,” the IEA said in a report on India’s energy policies.

Brent crude prices topped USD 70 a barrel on rising geopolitical tensions in the Middle East, putting pressure on emerging markets such as India. Like the rest of Asia, India is highly dependent on Middle East oil supplies with Iraq being its largest crude supplier.

India, which ranks No 3 in terms of global oil consumption after China and the United States, ships in over 80 per cent of its oil needs, of which 65 per cent is from the Middle East through the Strait of Hormuz, the IEA said.

The IEA, which coordinates release of strategic petroleum reserves (SPR) among developed countries in times of emergency, said it is important for India to expand its reserves.

REFINERY INVESTMENTS

India is the world’s fourth largest oil refiner and a net exporter of refined fuel, mainly gasoline and diesel.

India has drawn plans to lift its refining capacity to about 8 million bpd by 2025 from the current about 5 million bpd.

The IEA, however, forecasts India’s refining capacity to rise to 5.7 million bpd by 2024.

This would make “India a very attractive market for refinery investment,” IEA said.

Drawn to India’s higher fuel demand potential, global oil majors like Saudi Aramco, BP, Abu Dhabi National Oil Co and Total are looking at investing in India’s oil sector.

Saudi Aramco and ADNOC aim to own a 50 per cent stake in a planned 1.2-million bpd refinery in western Maharashtra state, for which land is yet to be acquired.

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coastaldigest.com web desk
June 16,2020

New Delhi, Jun 16: Despite Prime Minister Narendra Modi led government’s attempt to downplay the border dispute with China, matters have heated up unprecedentedly along the Line of Actual Control (LAC)- the effective Sino-India border in Eastern Ladakh. 

The country has lost three precious lives – an army officer and two soldiers. The last time blood was spilled on the LAC, before the latest episode, was 45 years ago when the Chinese ambushed an Assam Rifles patrol in Tulung La.

India had lost four soldiers on October 20, 1975 in Tulung La, the last time bullets were fired on the India-China border though both the countries witnessed bitter stand-offs later at Sumdorong Chu valley in 1987, Depsang in 2013, Chumar in 2014 and Doklam in 2017.

Between 1962 and 1975, the biggest clash between India and China took place in Nathu La pass in 1967 when reports suggest that around 80 Indian soldiers were killed and many more Chinese personnel.

While three soldiers, including a Commanding Officer, were killed in the latest episode in Galwan Valley, the government describes it as a "violent clash" and does not mention opening fire.

New Delhi described the locality where the 1975 incident took place as "well within" its territory only to be rebuffed by Beijing as "sheer reversal of black and white and confusion of right and wrong".

The Ministry of External Affairs had then said that the Chinese had crossed the LAC and ambushed the soldiers while Beijing claimed the Indians entered their territory and did not return despite warnings.

The Indian government maintained that the ambush on the Assam Rifles' patrol in 1975 took place "500 metres south of Tulung" on the border between India and Tibet and "therefore in Indian territory". It said Chinese soldiers "penetrating" Indian territory implied a "change in China's position" on the border question but the Chinese denied this and blamed India for the incident.

The US diplomatic cables quoted an Indian military intelligence officer saying that the Chinese had erected stone walls on the Indian side of Tulung La and from these positions fired several hundred rounds at the Indian patrol.

"Four of the Indians had gone into a leading position while two (the ones who escaped) remained behind. The senior military intelligence officer emphasised that the soldiers on the Indian patrol were from the area and had patrolled that same region many times before," the cable said.

One of the US cables showed that former US Secretary of State and National Security Adviser Henry Kissinger sought details of the October 1975 clash "without approaching the host governments on actual location of October 20 incident". He also wanted to know what ground rules were followed regarding the proximity of LAC by border patrols.

A cable sent from the US mission in India on November 4, 1975 appeared to have doubts about the Chinese account saying it was "highly defensive".

"Given the unsettled situation on the sub-continent, particularly in Bangladesh, both Chinese and Indian authorities have authorised stepped up patrols along the disputed border. The clash may well have ensued when two such patrols unexpectedly encountered each other," it said.

Another cable from China on the same day quoted another October 1974 cable, which spoke about Chinese officials being concerned for long that "some hotheaded person on the PRC (People's Republic of China) might provoke an incident that could lead to renewed Sino-Indian hostilities. It went on to say that this clash suggested that "such concerns and apprehensions are not unwarranted".

According to the United States diplomatic cables, Chinese Foreign Ministry on November 3, 1975 disputed the statement of the MEA spokesperson, who said the incident took place inside Indian territory.

The Chinese had said "sheer reversal of black and white and confusion of right and wrong". In its version of the 1975 incident, they said Indian troops crossed the LAC at 1:30 PM at Tulung Pass on the Eastern Sector and "intruded" into their territory when personnel at the Civilian Checkpost at Chuna in Tibet warned them to withdraw.

Ignoring this, they claimed, Indian soldiers made "continual provocation and even opened fire at the Chinese civilian checkpost personnel, posing a grave threat to the life of the latter. The Chinese civilian checkpost personnel were obliged to fire back in self defence."

The Chinese Foreign Ministry spokesperson had also said they told the Indian side that they could collect the bodies "anytime" and on October 28, collected the bodies, weapons and ammunition and "signed a receipt".

The US cables from the then USSR suggested that the official media carried reports from Delhi on the October 1975 incident and they cited only Indian accounts of the incident "ridiculing alleged Chinese claims that the Indians crossed the line and opened fire first".

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