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 19,2020

Washington, Feb 19: US President Donald Trump has said he is "saving the big deal" with India for later and he "does not know" if it will be done before the presidential election in November, clearly indicating that a major bilateral trade deal during his visit to Delhi next week might not be on the cards.

"We can have a trade deal with India. But I'm really saving the big deal for later," he told reporters at Joint Base Andrews Tuesday afternoon (local time).

The US and India could sign a "trade package" during the visit, according to media reports.

Asked whether he expects a trade deal with India before the visit, Trump said, "We're doing a very big trade deal with India. We'll have it. I don't know if it'll be done before the election, but we'll have a very big deal with India."

US Trade Representative Robert Lighthizer, the point-person for trade negotiations with India, is likely to not accompany Trump to India, sources said. However, officials have not ruled it out altogether.

In an apparent dissatisfaction over US-India trade ties, Trump said, "We're not treated very well by India." But he praised Prime Minister Narendra Modi and said he is looking forward to his visit to India.

"I happen to like Prime Minister Modi a lot," Trump said.

"He told me we'll have seven million people between the airport and the event. And the stadium, I understand, is sort of semi under construction, but it's going to be the largest stadium in the world. So it's going to be very exciting... I hope you all enjoy it," he told reporters.

Meanwhile, the US-India Strategic and Partnership Forum (USISPF) in a report said the latest quarterly data depict continuation of overall positive bilateral trade trends. The third quarter data reflects some downslide in growth rates.

"It may be due to several reasons, including the unexpected economic slowdown in India's economic growth, impact of US-China trade war, GSP withdrawal from the US side and retaliatory tariffs on specific US goods from the Indian side," USISPF said.

According to the report, the data available for the first three quarters of 2019 (January-September) pulled the overall growth rate in cumulative bilateral trade down to 4.5 percent from 8.4 percent registered for the first two quarters.

Goods and services trade performance in third quarter was dismal at -2.3 percent, in contrast with the impressive 9.6 percent growth witnessed for the first two quarters of the year; while trade in services was up two percent goods trade dropped five percent, the report said.

The cumulative US-India trade in goods and services (USD 110.9 billion) for the first three quarters of 2019 increased 4.5 percent with US exports and imports growing at four percent and five percent respectively.

The US exported USD 45.3 billion worth of goods and services to India in the first three quarters 2019, up 4 percent from the corresponding period in the previous year; and the US imported USD 65.6 billion worth of goods and services from India, up five percent from the previous year's USD 62.5 billion level for the same period, it said.

The USISPF has projected that the total bilateral trade can touch USD 238 billion by 2025 if the current 7.5 percent average annual rate of growth sustains; however, higher growth rates can result in bilateral trade in the range of USD 283 billion and USD 327 billion.

The US remains the top trading partner for India in terms of trade in goods and services, followed by China. While the bilateral trade between US and India is approximately 62 percent in goods and 38 percent in services, the bilateral trade between India and China is dominated by goods.

China had a huge trade surplus of USD 58 billion with India, indicating Beijing's strength in the Indian market, especially in sectors, such as electronics, machinery, organic chemicals, plastics and medical devices.

The US goods exports to India, in comparison, were mainly concentrated in mineral fuels, precious stones, and aircraft. The US faces tough competition with China in the Indian market in areas such as electronics, machinery, organic chemicals and medical devices.

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Agencies
July 22,2020

Houston, Jul 22: China said on Wednesday that the US has ordered it to close its consulate in Houston in what an official called an outrageous and unjustified move that will sabotage China-US relations.

Foreign ministry spokesperson Wang Wenbin condemned the action, which comes as tensions rise between the world's two largest economies. He warned of firm countermeasures if the US does not reverse its decision.

The unilateral closure of China's consulate general in Houston within a short period of time is an unprecedented escalation of its recent actions against China, Wang said at a daily news briefing.

There was no immediate confirmation or explanation from the U.S. side.

Media reports in Houston said that authorities had responded to reports of a fire at the consulate. Witnesses said that people were burning paper in what appeared to be trash cans, the Houston Chronicle reported, citing police.

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News Network
August 7,2020

Kozhikode: An Air India Express flight from Dubai with 190 people on board overshot the Kozhikode tabletop runway on landing there today. The Boeing 737 “fell off” the runway into the valley, broke into two causing death and devastation. 

According to reports, around 20 people were dead including two pilots.

An Air India spokesperson said: “Air India Express flight IX 1344 operated by Boeing 737 aircraft from Dubai to Calicut overshot the runway at Kozhikode at 7.41 pm Friday. No fire reported at the time of landing. There are 174 passengers, 10 infants, two pilots and five cabin crew on board. Rescue operations are on and passengers are being taken to hospital for medical care. We will soon share the update in this regard.”

The Directorate General of Civil Aviation (DGCA) is probing this accident. “Prima facie, the aircraft landed beyond the touchdown point and fell into a valley. It has broken into two. We suspect some casualties. More information is awaited,” said a senior DGCA official.

Taking to twitter, defence minister Rajnath Singh wrote: “Devastating news from Kozhikode, Kerala. I am deeply anguished by the loss of lives due to an accident carrying several passengers on Air India flight. In this hour of grief, my thoughts are with the bereaved families. I pray for the speedy recovery of the injured.”

Foreign minister S Jaishankar tweeted: “Deeply distressed to hear about the Air India Express tragedy at Kozhikode. Prayers are with the bereaved families and those injured. We are ascertaining further details.”

While, senior BJP leader from Kerala K J Alphons tweeted: “Second tragedy of the day in Kerala: Air India Express skids off the run way at Kozhikode, front portion splits , pilot dies and lots of passengers injured . All passengers evacuated. Very lucky the aircraft didn’t catch fire.”

More details are awaited.

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