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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News Network
January 21,2020

Lucknow, Jan 21: Defending his brainchild, the Citizenship Amendment Act (CAA), Union home minister Amit Shah on Tuesday said the new law will not be scrapped despite the countrywide protests against it.

Addressing a rally here to drum up support for the CAA, Shah also declared that construction of a Ram temple "touching the skies" in Ayodhya will begin within three months.

He said there is no provision in the amended law for taking anyone's citizenship away. "A canard is being spread against the CAA by the Congress, SP, BSP, and Trinamool Congress. The CAA is a law to grant citizenship," he added.

"I want to say that irrespective of the protests this will not be withdrawn," he added.

Shah challenged Congress leaders to hold a discussion with him on CAA at a public forum.

He named Congress leader Rahul Gandhi, Samajwadi Party's Akhilesh Yadav, Bahujan Samaj Party's Mayawati and TMC chief Mamata Banerjee while throwing the "challenge".

Congress has become blind due to vote bank politics,"he said. He also blamed the Congress for Partition.

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News Network
March 10,2020

Tehran, Mar 10: Twenty-seven people have died from methanol poisoning in Iran after rumours that drinking alcohol can help cure the novel coronavirus infection, state news agency IRNA reported on Monday. The outbreak of the virus in Islamic republic is one of the deadliest outside of China, where the disease originated.

Twenty have died in the southwestern province of Khuzestan and seven in the northern region of Alborz after consuming bootleg alcohol, IRNA said.

Drinking alcohol is banned in Iran for everyone except some non-Muslim religious minorities. Local media regularly report on lethal cases of poisoning caused by bootleg liquor.

A spokesman for Jundishapur medical university in Ahvaz, the capital of Khuzestan, said 218 people had been hospitalised there after being poisoned.

The poisonings were caused by "rumours that drinking alcohol can be effective in treating coronavirus," Ali Ehsanpour said.

The deputy prosecutor of Alborz, Mohammad Aghayari, told IRNA the dead had drunk methanol after being "misled by content online, thinking they were fighting coronavirus and curing it." If ingested in large quantities, methanol can cause blindness, liver damage and death.

Iran has been scrambling to contain the spread of the COVID-19 illness which has hit all of the country's 31 provinces, killing 237 people and infecting 7,161.

According to IRNA, 16 out of 69 confirmed cases have died of coronavirus infection in Khuzestan as of Sunday.

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News Network
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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