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 18,2020

Washington, Feb 18: The upcoming visit of President Donald Trump to India later this month has the potential to usher in a new era of bilateral ties between the two countries, a top American business advocacy group has said.

President Trump will pay a state visit to India on February 24 and 25 at the invitation of Prime Minister Narendra Modi. He would be accompanied by First Lady Melania Trump.

This would be the president's first bilateral visit in the third decade of the 21st century and also the first after his acquittal by the Senate in the impeachment trial.

"I believe President Trump's upcoming visit to India has the potential to usher in a new era of our bilateral ties," Mukesh Aghi, President of the US India Strategic and Partnership Forum (USISPF) said in a statement on Monday.

On the sidelines of the visit, the USISPF, in collaboration with the Federation of Indian Chambers of Commerce and Industry (FICCI) and the ORF, has announced to organise a program entitled "US-India Forum: Partners for Growth".

The full-day discussion will focus on the key pillars defining India and the US' strategic, economic, and cultural partnership over the next decade.

"We have an opportunity before us to make real progress on multiple aspects of the relationship— whether it is upholding peace and security in the Indo-Pacific region; building upon an already strong energy partnership; developing co-production and co-development opportunities in the defense space; or strengthening bilateral trade," Aghi said.

"We look forward to an extremely successful visit and some concrete outcomes from the visit," he said.

The day-long programme on February 25 in New Delhi, will bring together over 500 senior business executives, members of the US-India think tank community and leading figures of the Indian diaspora to set the agenda for this strategic partnership.

Discussions during the day will touch upon areas, including the Indo-Pacific Strategy and Maritime Security; the US-India Defence Partnership, the US-India Energy Partnership, Elevating US-India Trade and Investment and Role of the Indian Diaspora in US-India Relations.

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News Network
February 21,2020

Patna, Feb 21: The country is paying the price for failure to send Muslims to Pakistan and bring Hindus to India after the Islamic state came into being at the time of Independence, Union minister Giriraj Singh has said, triggering a fresh controversy.

The BJP leader made the remark in Purnea district in the Seemanchal region of Bihar which has a sizeable Muslim population and where the Begusarai MP was canvassing in favor of the Citizenship (Amendment) Act.

Highlighting the need for such a legislation, he told reporters late Thursday "when our forefathers were fighting for Independence from British rule, Jinnah was pushing for the creation of an Islamic state".

"Our forefathers, however, committed a mistake. Had they ensured that all our Muslim brothers were sent to Pakistan and Hindus brought here, the need for such a move (CAA) would not have arisen. This did not happen and we have paid a heavy price for it," the outspoken BJP leader said.

The CAA, which seeks to fast-track granting citizenship to non-Muslim refugees from Pakistan, Bangladesh and Afghanistan who might have fled their home countries because of religious persecution, has become a major bone of contention since it is feared that a country-wide National Register for Citizens (NRC) may follow.

The Narendra Modi government, which had formerly hinted that a country-wide NRC was on the anvil, seems to have put it on the backburner though a section of citizens across the country, especially Muslims, have been organizing protests out of fear that, if implemented, the NRC may result in a large number of people becoming stateless.

Singh has often been in the crosshairs of the opposition for placing his foot in the mouth. This time, however, his words were frowned upon even by NDA ally Lok Janshakti Party, founded by his cabinet colleague Ram Vilas Paswan and now headed by his son Chirag Paswan.

The young LJP chief, who kicked off a state-wide "Bihar First-Bihari First" yatra here Friday morning, to project the NDAs progressive face ahead of the assembly polls due later this year, expressed strong disapproval of Singh's utterance and noted the coalition had to suffer in the Delhi polls because of "divisive" remarks by BJP leaders.

"We are an NDA constituent but many times our coalition partners say things which the LJP does not at all agree with. This one (Giriraj Singhs statement) is such an example. Had a person of my party spoken in this fashion, I would have taken responsibility and acted," Paswan said.

He said he had placed his view repeatedly on record that the coalition had to suffer on account of divisive remarks, Paswan said in apparent reference to inflammatory speeches by BJP leaders like Union minister Anurag Thakur and BJP MP Parvesh Verma, among others.

"The people of Delhi voted on the basis of performance. We wish they do so again in Bihar and real issues don't get drowned in political cacophony.

"The Nitish Kumar government has accomplished a lot, though much more needs to be achieved. We wish to reach out to people with our vision for the future, said Paswan, before he embarked on the yatra on a customized bus decorated like a chariot in front of which he offered prayers and smashed a coconut.

Meanwhile, Giriraj Singh who loves to wear his Hindu nationalism on the sleeves was busy joining issue with Asaduddin Owaisi's AIMIM which has been under attack for controversial remarks by its leader Waris Pathan.

Sharing video of an old speech by Owaisis brother Akbaruddin which had landed him in jail, besides Pathan's recent remark, Singh asked the opposition RJD-Congress combine in Bihar and the "tukde tukde gang" whether they wanted to "convert India into Pakistan".

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News Network
February 16,2020

New Delhi, Feb 16: Just an hour ahead of the swearing-in ceremony, Arvind Kejriwal invited the people of Delhi again for his oath-taking ceremony at Ramlila Maidan today.

Referring himself as "son of Delhi", the AAP convener today tweeted saying, "Delhiites, your son is going to take oath as Delhi chief minister for the third time. You must come to bless your son".

The AAP national convener will be sworn-in as the Chief Minister of Delhi for the third time in a row.

Arvind Kejriwal is scheduled to take oath along with other ministers at Ramlila Maidan.

On Saturday, Kejriwal, through a tweet, has said that autorickshaw drivers, students, teachers, doctors, labourers, etc will be the "chief guests".

The guest list put out by the AAP includes ''Delhi ke Nirmata''- people who contributed to the development of the city during the last five years.

These include Sumit Nagal, a Delhi government school student and an international Tennis player, Laxman Chaudhry an auto driver, Manu Gulati a teacher and "one of the many architects of Delhi Governance Model", Dalbir Singh a farmer, Ratan Jamshed Batliboi - the architect of the famous Signature Bridge among others.

By winning 62 seats by cashing in on the plank of development, his party nearly repeated its 2015 performance, sweeping the Assembly polls in the face of a high-voltage campaign by the BJP, which had fielded a battery of Union Ministers and Chief Ministers in its electioneering, spearheaded by Home Minister Amit Shah.

The BJP marginally improved its tally, managing just eight seats from its 2015''s tally of three seats. The Congress failed to open its account in the second successive election.

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