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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May 11,2020

May 11: Saudi Arabia will triple its value-added tax rate and suspend a cost of living allowance for state workers, it said on Monday, seeking to shield finances hit by low oil prices and a slump in demand for its lifeline export worsened by the new coronavirus.

Historic oil output cuts agreed by Riyadh and other major producers have given only limited support to prices after they sank on oversupply caused by a war for petroleum market share between the kingdom and its fellow oil titan Russia.

Saudi Arabia, the world's largest oil exporter, is also being hit hard by measures to fight the new coronavirus, which are likely to curb the pace and scale of economic reforms launched by Crown Prince Mohammed bin Salman.

"The cost of living allowance will be suspended as of June 1, and the value added tax will be increased to 15% from 5% as of July 1," Finance Minister Mohammed al-Jadaan said in a statement reported by the state news agency. "These measures are painful but necessary to maintain financial and economic stability over the medium to long term...and to overcome the unprecedented coronavirus crisis with the least damage possible."

The austerity measures come after the kingdom posted a $9 billion budget deficit in the first quarter.

The minister said non-oil revenues were affected by the suspension and decline in economic activity, while spending had risen due to unplanned strains on the healthcare sector and the initiatives taken to support the economy.

"All these challenges have cut state revenues, pressured public finances to a level that is hard to deal with going forward without affecting the overall economy in the medium to long term, which requires more spending cuts and measures to support non-oil revenues stability," he added.

The government has cancelled and put on hold some operating and capital expenditures for some government agencies, and cut allocations for some reform initiatives and projects worth a total 100 billion riyals ($26.6 billion), the statement said.

Central bank foreign reserves fell in March at their fastest rate in at least 20 years and to their lowest since 2011, while oil revenues in the first three months of the year fell 24% from a year earlier to $34 billion, pulling total revenues down 22%.

"The reforms are positive from a fiscal side as greater adjustment is essential. However, the tripling of VAT is unlikely to help that much in 2020 revenue wise with the expected fall in consumption," said Monica Malik, chief economist at Abu Dhabi Commercial Bank.

She said she kept unchanged her deficit forecast of 16.3% of GDP for this year, which already factors in a greater than previously announced spending cut.

About 1.5 million Saudis are employed in the government sector, according to official figures released in December.

In 2018, Saudi Arabia's King Salman ordered a monthly payment of 1,000 riyals ($267) to every state employee to compensate them for the rising living costs after the government hiked domestic gas prices and introduced value-added tax.

DIFFICULT TIMES

A committee has been formed to study all financial benefits paid to public sector employees and contractors, and will submit recommendations within 30 days, the statement said.

In late 2015, when oil prices fell from record highs, the kingdom slashed lavish bonuses, overtime payments and other benefits once considered routine perks in the public sector.

In a country without elections and with political legitimacy resting partly on distribution of oil revenue, the ability of citizens to adapt to such reforms is crucial for stability.

"Tripling the VAT will test the limits of the balance between revenues and consumption as the economy dives into a deep recession. The move will impact consumption and could also lower the expected revenues," said John Sfakianakis, a Gulf expert at the University of Cambridge.

"These are pro-austerity and pro-revenue moves rather than pro-growth ones," he said.

Hasnain Malik, head of equity strategy at Tellimer, said the VAT rise could bring about $24-$26.5 billion in additional non-oil fiscal revenue. The rise would hit consumer spending further but was a needed step towards fiscal sustainability, he said.

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News Network
February 26,2020

Feb 26: China’s massive travel restrictions, house-to-house checks, huge isolation wards and lockdowns of entire cities bought the world valuable time to prepare for the global spread of the new virus.

But with troubling outbreaks now emerging in Italy, South Korea and Iran, and U.S. health officials warning Tuesday it’s inevitable it will spread more widely in America, the question is: Did the world use that time wisely and is it ready for a potential pandemic?

“It’s not so much a question of if this will happen anymore, but rather more a question of exactly when this will happen — and how many people in this country will have severe illness,” said Dr. Nancy Messonnier of the U.S. Centers for Disease Control and Prevention.

Some countries are putting price caps on face masks to combat price gouging, while others are using loudspeakers on trucks to keep residents informed. In the United States and many other nations, public health officials are turning to guidelines written for pandemic flu and discussing the possibility of school closures, telecommuting and canceling events.

Countries could be doing even more: training hundreds of workers to trace the virus’ spread from person to person and planning to commandeer entire hospital wards or even entire hospitals, said Dr. Bruce Aylward, the World Health Organization’s envoy to China, briefing reporters Tuesday about lessons learned by the recently returned team of international scientists he led.

“Time is everything in this disease,” Aylward said. “Days make a difference with a disease like this.”

The U.S. National Institutes of Health’s infectious disease chief, Dr. Anthony Fauci, said the world is “teetering very, very close” to a pandemic. He credits China’s response for giving other nations some breathing room.

China locked down tens of millions of its citizens and other nations imposed travel restrictions, reducing the number of people who needed health checks or quarantines outside the Asian country.

It “gave us time to really brush off our pandemic preparedness plans and get ready for the kinds of things we have to do,” Fauci said. “And we’ve actually been quite successful because the travel-related cases, we’ve been able to identify, to isolate” and to track down those they came in contact with.

With no vaccine or medicine available yet, preparations are focused on what’s called “social distancing” — limiting opportunities for people to gather and spread the virus.

That played out in Italy this week. With cases climbing, authorities cut short the popular Venice Carnival and closed down Milan’s La Scala opera house. In Japan, Prime Minister Shinzo Abe called on companies to allow employees to work from home, while the Tokyo Marathon has been restricted to elite runners and other public events have been canceled.

Is the rest of the world ready?

In Africa, three-quarters of countries have a flu pandemic plan, but most are outdated, according to authors of a modeling study published last week in The Lancet medical journal. The slightly better news is that the African nations most connected to China by air travel — Egypt, Algeria and South Africa — also have the most prepared health systems on the continent.

Elsewhere, Thailand said it would establish special clinics to examine people with flu-like symptoms to detect infections early. Sri Lanka and Laos imposed price ceilings for face masks, while India restricted the export of personal protective equipment.

India’s health ministry has been framing step-by-step instructions to deal with sustained transmissions that will be circulated to the 250,000 village councils that are the most basic unit of the country’s sprawling administration.

Vietnam is using music videos on social media to reach the public. In Malaysia, loudspeakers on trucks blare information through the streets.

In Europe, portable pods set up at United Kingdom hospitals will be used to assess people suspected of infection while keeping them apart from others. France developed a quick test for the virus and has shared it with poorer nations. German authorities are stressing “sneezing etiquette” and Russia is screening people at airports, railway stations and those riding public transportation.

In the U.S., hospitals and emergency workers for years have practiced for a possible deadly, fast-spreading flu. Those drills helped the first hospitals to treat U.S. patients suffering from COVID-19, the disease caused by the virus.

Other hospitals are paying attention. The CDC has been talking to the American Hospital Association, which in turn communicates coronavirus news daily to its nearly 5,000 member hospitals. Hospitals are reviewing infection control measures, considering using telemedicine to keep potentially infectious patients from making unnecessary trips to the hospital and conserving dwindling supplies of masks and gloves.

What’s more, the CDC has held 17 different calls reaching more than 11,000 companies and organizations, including stadiums, universities, faith leaders, retailers and large corporations. U.S. health authorities are talking to city, county and state health departments about being ready to cancel mass gathering events, close schools and take other steps.

The CDC’s Messonnier said Tuesday she had contacted her children’s school district to ask about plans for using internet-based education should schools need to close temporarily, as some did in 2009 during an outbreak of H1N1 flu. She encouraged American parents to do the same, and to ask their employers whether they’ll be able to work from home.

“We want to make sure the American public is prepared,” Messonnier said.

How prepared are U.S. hospitals?

“It depends on caseload and location. I would suspect most hospitals are prepared to handle one to two cases, but if there is ongoing local transmission with many cases, most are likely not prepared just yet for a surge of patients and the ‘worried well,’” Dr. Jennifer Lighter, a pediatric infectious diseases specialist at NYU Langone in New York, said in an email.

In the U.S., a vaccine candidate is inching closer to first-step safety studies in people, as Moderna Inc. has delivered test doses to Fauci’s NIH institute. Some other companies say they have candidates that could begin testing in a few months. Still, even if those first safety studies show no red flags, specialists believe it would take at least a year to have something ready for widespread use. That’s longer than it took in 2009, during the H1N1 flu pandemic — because that time around, scientists only had to adjust regular flu vaccines, not start from scratch.

The head of the World Health Organization, Tedros Adhanom Ghebreyesus, said the U.N. health agency’s team in China found the fatality rate between 2% and 4% in the hard-hit city of Wuhan, the virus’ epicenter, and 0.7% elsewhere.

The world is “simply not ready,” said the WHO’s Aylward. “It can get ready very fast, but the big shift has to be in the mindset.”

Aylward advised other countries to do “really practical things” now to get ready.

Among them: Do you have hundreds of workers lined up and trained to trace the contacts of infected patients, or will you be training them after a cluster pops up?

Can you take over entire hospital wards, or even entire hospitals, to isolate patients?

Are hospitals buying ventilators and checking oxygen supplies?

Countries must improve testing capacity — and instructions so health workers know which travelers should be tested as the number of affected countries rises, said Johns Hopkins University emergency response specialist Lauren Sauer. She pointed to how Canada diagnosed the first traveler from Iran arriving there with COVID-19, before many other countries even considered adding Iran to the at-risk list.

If the disease does spread globally, everyone is likely to feel it, said Nancy Foster, a vice president of the American Hospital Association. Even those who aren’t ill may need to help friends and family in isolation or have their own health appointments delayed.

“There will be a lot of people affected even if they never become ill themselves,” she said.

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News Network
February 1,2020

New Delhi, Feb 1: India on Friday banned the export of personal protection equipment such as masks and clothing amid a global coronavirus outbreak.

It did not give a reason for the ban but it reported its first case of the new coronavirus on Thursday, a woman in Kerala who was a student of Wuhan University in China.

The central Chinese city of Wuhan is the epicentre of the outbreak, and the virus has since spread to more than 9,800 people globally and killed 213 people in China.

Several Indian citizens living in Wuhan will arrive in India by plane on Saturday and be taken to a quarantine centre on the outskirts of the capital New Delhi.

India, the world’s second most heavily populated country after China, has taken measures to ensure that all people arriving from China report to health authorities.

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