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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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
May 29,2020

Washington, May 29: US President Donald Trump while speaking with reporters at the White House on Thursday said that he is more liked in India than the media in his own country --the United States.

"I know. And they like me in India. I think they like me in India certainly more than the media likes me in this country, " Trump told reporters at his Oval office.

"And I like Modi (Prime Minister Narendra Modi). I like your prime minister a lot. He's a great gentleman. A great gentleman," he added further while briefing the reporters.

But when asked over ties between India and China, the US President said, "They have a big conflict going with India and China. Two countries with 1.4 billion people. Two countries with very powerful militaries. And India is not happy, and probably China is not happy."

Reiterating his offer to mediate between India and China on the border issue, Trump said that he spoke to Prime Minister Narendra Modi, who is not in "good mood" about the ongoing situation with Beijing.

However, informed sources from the Ministry of External Affairs told ANI on Friday that there has been no recent contact between Prime Minister Modi and the US President. The last conversation between them took place on April 4, 2020, on the subject of hydroxychloroquine.

Asked about his Wednesday's tweet regarding his offer to mediate between India and China, Trump said, "I would do that. If they (China and India) thought it would help." However, Trump did not clarify when did he speak to Modi.

Trump on Wednesday tweeted that he is "ready, willing and able to mediate" between India and China."We have informed both India and China that the United States is ready, willing and able to mediate or arbitrate their now raging border dispute," the US President said.

In response to Trump's mediation offer, India said on Thursday that it is engaged with the Chinese side to resolve the border issue peacefully.

India's Ministry of External Affairs spokesperson Anurag Srivastava said that the two sides have established mechanisms both at military and diplomatic levels to resolve situations that may arise in border areas peacefully through dialogue and "continue to remain engaged through these channels."

Indian and Chinese field commanders have been holding talks on de-escalating the tensions.

China has also struck a conciliatory tone on the border issue with India, saying the two countries pose no threat to each other and should resolve their differences through communication, while not allowing them to overshadow bilateral relations.

"We should never let differences overshadow our relations. We should resolve differences through communication. China and India should be good neighbours of harmonious coexistence and good partners to move forward hand in hand," said Chinese Ambassador to India, Sun Weidong, on Wednesday.

The tensions escalated between India and China following a number of confrontations between soldiers of both armies.

Troops of India and China were engaged in two face-offs in Eastern Ladakh and North Sikkim along the disputed Line of Actual Control (LAC), where troops from both sides suffered injuries early this month.

Studies over the anti-malarial drug, which is believed to cure the highly contagious coronavirus, have shown side-effects, according to the Centers for Disease Control and Prevention and the World Health Organisation. But Trump continues to defend his decision to take hydroxychloroquine saying he believes that it gives an additional level of safety.

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Agencies
February 29,2020

Ahmedabad, Feb 29: The presence of two feral pigeons onboard a GoAir flight at the airport in Ahmedabad in Gujarat created a flutter among the amused passengers, even though the avian surprise did not lead to any untoward incident or delay in the flight.

The incident took place on Friday when the passengers were boarding the Ahmedabad-Jaipur flight.

"Two pigeons had found their way inside the flight G8 702 while the passengers were boarding," an airline statement said on Saturday.

"The crew immediately shooed away the birds. The flight took off at its scheduled time at 5 p.m.," it added.

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