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
March 12,2020

Bhopal, Mar 12: The Madhya Pradesh Congress on Thursday took a dig at Jyotiraditya Scindia, who broke ranks with the party and joined BJP on Wednesday, by pointing out that neither Prime Minister Narendra Modi nor Amit Shah had not even put out as much a tweet to welcome him in the party, and construed it as "humiliation" for the "maharaja".

"Not even a tweet by Narendra Modi-ji or Amit Shah-ji to welcome Scindia-ji! Modi-ji, Shah-ji, at least do not do it so soon. It has not even been 24 hours yet and you guys have already started humiliating him...!" Madya Pradesh Congress tweeted in Hindi.

Taking a jibe at Mr Scindia, a member of the erstwhile royal family of Gwalior who ended his 18-year-long association with the Congress party on a bitter note, the state Congress said: "He is a maharaja, the one whose history is often mentioned by Shivraj-ji (former Madhya Pradesh Chief Minister Shivraj Singh Chouhan)."

On Wednesday, Jyotiraditya  Scindia joined BJP in New Delhi in the presence of party president JP Nadda. He had resigned from Congress a day earlier after meeting Amit Shah and Prime Minister Narendra Modi.

Mr Scindia will file his nomination for the Rajya Sabha elections on March 13. He is expected to go to Bhopal today.

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News Network
January 6,2020

Jammu, Jan 6: Union Minister Jitendra Singh on Sunday said India is the only shelter for religiously persecuted Hindus, Sikhs and other minorities who come from Pakistan, Bangladesh or Afghanistan, for the safety of their life and honour.

"India owes responsibility towards the minorities living in these countries which proclaim Islam as their state religion," Singh said here while launching the BJP's countrywide 10-day mass contact drive to spread awareness about the Citizenship Amendment Act (CAA).

Accompanied by senior party colleagues, including former deputy chief minister Kavinder Gupta and former minister Sat Sharma, he began by visiting the house of veteran columnist, writer and Padmashri awardee K L Pandita, where he spent time with them discussing the Act.

Later, he visited prominent social activist Amjad Mirza, eminent Sikh religious leader Baba Swaranjit Singh, retired High Court judge Justice G D Sharma, veteran journalist and former bureau head of Hind Samachar group Gopal Sachar, retired principal of Jammu government medical college Subhash Gupta, social activist and president of Peoples' Forum Ramesh Sabharwal, among others.

During his interaction with them, the Minister of State in the Prime Minister's Office claimed that Congress leaders and their allies protesting against the Act are doing so without "conviction".

He opined that if a "survey" was conducted among the family members of these Congress leaders, then, even they would not support their "anti-CAA stand".

"The tragedy of Congress party and contemporary leaders of Congress is that either they do not read their own history or are blissfully ignorant of the statements made by their own party patriarchs and former prime ministers," he said.

The minister recalled that the Nehru-Liaquat Pact of 1950 was inspired by the realisation on the part of the then Congress government headed by prime minister Jawaharlal Nehru that minorities, particularly Hindus, were not getting a fair deal in Pakistan.

"In 1949, Nehru had written a letter expressing concern about people coming in from then East Pakistan, which is now Bangladesh, and while doing so, he had referred to Hindus coming from there as 'refugees' and Muslims arriving here as 'immigrants'," Singh said.

Further, Nehru had stated that India owed a "responsibility" to these refugees, the minister said.

Referring to the opposition of senior Congress leaders Rahul Gandhi and Priyanka Gandhi to the amended legislation, the minister said someone should show them records of proceedings of the winter session of Parliament in 1950 when their great-grandfather (Nehru) had himself said that they deserved to be given citizenship and if the law was inadequate for it, then, the law should be changed.

"PM Modi should actually be given credit for showing courage and conviction to carry forward the task, which the Congress government lacked, to accomplish this," the minister opined.

Singh reiterated that a false fear psychosis against Muslims is being sought to be manufactured when there is no place as safe and comfortable to live for the community as India.

Turning the tables on the opposition to the National Population Register(NPR) and proposed National Register of Citizens (NRC), Singh pointed out that PM Modi and Union Home Minister Amit Shah have been stating that the exercise on NRC is yet to begin.

He also said that it was then Union home minister P Chidambaram, who had stated in Parliament in 2010 that NPR could be a basis for NRC.

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News Network
June 2,2020

Minneapolis, Jun 2: An official autopsy released Monday ruled that George Floyd, the African-American man whose death at police hands set off unrest across the United States, died in a homicide involving "neck compression".

George, 46, died of "cardiopulmonary arrest complicating law enforcement subdual, restraint, and neck compression," and the manner of death was "homicide," the Hennepin County Medical Examiner in Minneapolis said in a statement.

Floyd's other significant health conditions were listed as "arteriosclerotic and hypertensive heart disease; fentanyl intoxication; recent methamphetamine use."

The statement added that the "manner of death is not a legal determination of culpability or intent."

It emphasized that under Minnesota state law "the Medical Examiner is a neutral and independent office and is separate and distinct from any prosecutorial authority or law enforcement agency."

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