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
June 6,2020

New Delhi, Jun 6: Military commanders of India and China are scheduled to meet today at Moldo on the Chinese side of the Line of Actual Control (LAC), to discuss the ongoing dispute along the LAC in Eastern Ladakh.

The Commander of the Leh-based 14 Corps of the Indian Army Commander Lieutenant Gen Harinder Singh will meet his Chinese equivalent Maj Gen Liu Lin, who is the commander of South Xinjiang Military Region of Chinese People's Liberation Army (PLA) to address the ongoing tussle in Eastern Ladakh between the two countries over the heavy military build-up by the People's Liberation Army along the LAC there.

The two sides have held close to a dozen rounds of talks since the first week of May when the Chinese sent over 5,000 troops to the LAC.

On Friday, officials of India and China interacted through video-conferencing with the two sides agreeing that they should handle "their differences through peaceful discussion" while respecting each other's sensitivities and concerns and not allowing them to become disputes in accordance with the guidance provided by the leadership.

In the last few days, there has not been any major movement of the People's Liberation Army troops at the multiple sites where it has stationed itself along the LAC opposite Indian forces.

India and China have been locked in a dispute over the heavy military build-up by the People's Liberation Army (PLA) where they have brought in more than 5,000 troops along with the Eastern Ladakh sector.

The Chinese Army's intent to carry out deeper incursions was checked by the Indian security forces by quick deployment. The Chinese have also brought in heavy vehicles with artillery guns and infantry combat vehicles in their rear positions close to the Indian territory.

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News Network
June 12,2020

An Indian national was killed and four others injured in alleged firing by Nepal police personnel along the India-Nepal border in Bihar's Sitamarhi district today.

Sources said the firing took place after a clash between the Indians and personnel of Nepal police at the Lalbandi-Janki Nagar border in Pipra Parsain panchayat under Sonebarsha police station of the district.

Jitendra Kumar, the additional director general of police (headquarters), confirmed the death and injuries. The place of firing falls under Nepal jurisdiction.

Locals said Vikesh Kumar Rai, 25, died on the spot and Umesh Ram and Uday Thakur received bullet injuries when they were working in an agricultural field. Another person, Lagan Rai, is said to have been detained by the Nepali police.

Injured persons were rushed to Sitamarhi Sadar Hospital for better treatment.

Vikesh Kumar Rai’s father, Nageshwar Rai, said that his agriculture land falls under Narayanpur in Nepal where his son was working.

On May 17, Nepal police had fired blank rounds to disperse dozens of Indians trying to cross the border. It was not clear if they were also farmers.

The district magistrate and the superintendent of police of Sitamarhi have rushed to the spot.

Nepal shares a 1,850-kilometre (1,150-mile) open border with India and people travel across it for work and to visit family. It had closed its international borders on March 22 amid the coronavirus pandemic.

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News Network
February 16,2020

Varanasi, Feb 16: Amidst continuing protests against the amended citizenship law, Prime Minister Narendra Modi on Sunday said his government stood by the decision despite all pressure.

"Be it the decision on Article 370 or the Citizenship Amendment Act, it was necessary in the interest of the country. Despite pressure, we stand by our decision and will remain so," he said.

Modi was addressing a public meeting in his Lok Sabha constituency.

Prime Minister Narendra Modi also asserted that the trust set up for construction of the Ram temple in Ayodhya will work "rapidly".

"A trust has been formed for construction of a grand Ram temple in Ayodhya. This trust will work rapidly," he said at a public meeting during his day-long visit to his Lok Sabha constituency.

The government had recently set up the Shri Ram Janmabhoomi Teerth Kshetra on the Supreme Court's directive to the Union government to form a trust that can look into the construction and management of the temple.

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